Cadpipe Hvac Ver 8.1 Manuals

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CAD PI PE H VAC

®

INSTALLATION Installing the CADPIPE HVAC software onto your system is a straightforward process. However, because there are so many computer systems and system configurations available, please read and follow these instructions. If CADPIPE HVAC has previously been installed on your machine, the installation program will ask you what to do with your existing database files. You may: Leave Alone: This option will not overwrite your existing database files by copying onto your system the database files from the installation diskettes. You will want to select this option if you have made changes to your databases. Overwrite: This option will overwrite the existing database files on your system with the database files found on the installation diskettes. Backup: This option will create a subdirectory called BACKUP in your HVAC directory and will copy your existing database files into this directory. The database files from the installation disks will then be copied onto your system. Installation Before you begin installation Before you start to install your software, be sure you have enough space on your hard disk. The CADPIPE HVAC software requires 3MB of free disk space for installation. If you currently have a version of CADPIPE HVAC installed on your system, we recommend that you backup your database files before proceeding with the installation (see Chapter 8 – HVAC Specifications for instructions on how to backup your database files). Requirements • Pentium-based computer running Windows 2000, XP, NT, or 98. It is recommended that you have at least 128Mb of RAM available on your system (see AutoCAD system requirements in AutoCAD 2004). • AutoCAD 2004, 2002, 2000i, or 2000 running on your system. CADPIPE HVAC does not run on earlier versions of AutoCAD. • An AutoCAD compatible mouse. • A printer and/or a plotter. • Training in the use of the AutoCAD drawing software. • To load the CADPIPE HVAC software onto your machine: Plug the hardware lock you received with your software into your computer parallel port. The CADPIPE HVAC software will not operate unless this device is attached. Your printer should be plugged into the back of the hardware lock. If you already have another CADPIPE product installed on your system, simply plug your CADPIPE HVAC hardware lock into the back of the existing hardware lock in a “piggy back” fashion. Insert the CD Rom labeled CADPIPE Commercial HVAC into your CD Rom drive. From the Start Menu, click on Windows Explorer and double click the drive your CADPIPE software is located. Click the folder named HVAC and choose the setup.exe program. Follow the prompts on the screen. Once you have completed these steps, the CADPIPE HVAC files are copied to the drive and directory which you selected during the installation. A program group menu called CADPIPE will be created. It

will contain the CADPIPE HVAC icon. If CADPIPE HVAC has previously been installed on your machine, the installation program will not overwrite any existing database files found on your machine. Starting CADPIPE HVAC for Windows Click on the Start Menu and then programs. Choose the HVAC program from the CADPIPE HVAC menu. At this point, AutoCAD will be loaded. The following chapters will show you how to run the CADPIPE HVAC software once you are in AutoCAD.

Contents INSTALLATION ........................................................................ 2 Before you begin installation .............................................................................................................. 2 Requirements ....................................................................................................................................... 2 Starting CADPIPE HVAC for Windows .............................................................................................. 3

CHAPTER 1. INTRODUCTION TO HVAC ............................ 13 HVAC Menus and Toggles.......................................................... 13 Before You Start To Draw .................................................................................................................. 15 Starting to Draw ................................................................................................................................. 15

CHAPTER 2. HVAC CONFIGURATION ................................. 17 Configure Rectangular ............................................................... 17 Drag Duct ........................................................................................................................................... 17 Metric ................................................................................................................................................. 18 Solids .................................................................................................................................................. 18 Show Flanges ..................................................................................................................................... 18 Show Prompts Dialog ......................................................................................................................... 19 Collision Checking ............................................................................................................................. 19 Fitting Origin ...................................................................................................................................... 19 Rectangular Systems ......................................................................................................................... 19 Base Elevation ................................................................................................................................... 19 Reinforcing ......................................................................................................................................... 19 Undo Back Options ............................................................................................................................ 20

Configure Rectangular -- Text Options .................................... 20 Display Selected Tag Type ................................................................................................................ 21 Tag Options ........................................................................................................................................ 21 Text Size Options ............................................................................................................................... 21 Text Style ........................................................................................................................................... 22

Configure Rectangular -- Vanes and Seams ............................. 22 Configure Rectangular -- Lining and Wrapper ....................... 22 Configure Rectangular -- Tooltip Query .................................. 23 Available Tip Info .............................................................................................................................. 24 Tip Info to Display ............................................................................................................................. 24 Show Dynamic Tooltip Query ............................................................................................................ 24 Label Each Tip ................................................................................................................................... 24 Configure Round/Oval ....................................................................................................................... 25 Rnd/Oval to Sqr: In Shape; Sqr to Rnd/Oval: Out Shape ............................................................... 25 Spiral Duct ......................................................................................................................................... 25

CHAPTER 3. DRAWING DUCTWORK ........................ 26 Starting to Draw.......................................................................... 26 Start a Run ......................................................................................................................................... 26 Join To ................................................................................................................................................ 26

Fitting Specifications Menu ....................................................... 27 Fitting Selection ................................................................................................................................. 27

Up, Down, Normal-Rectangular and Oval Fittings ................. 28 Up, Down, Normal-Round Fittings............................................ 31 Ductulator.................................................................................... 32 View Drawing ..................................................................................................................................... 33

Special Fittings ............................................................................ 33 Straight ............................................................................................................................................... 33 Cut to Length ..................................................................................................................................... 34

Drop Cheek Fittings ................................................................... 35 Offsets and Transitions ............................................................... 36 Cheek and Wrapper Offset ........................................................ 36 Radius Cheek and Radius Wrapper .......................................... 39 Join To ................................................................................................................................................ 40

Takeoffs and Taps ........................................................................ 41 Align with Diffuser ............................................................................................................................. 42 Auto-Route to Diffuser ...................................................................................................................... 43 Place ................................................................................................................................................... 45

CHAPTER 4. AUTO-ROUTE/ROUTING LINE ........................ 46 Auto-Route .................................................................................. 46 Type of Auto-Route ........................................................................................................................... 47 Type of Elbow ..................................................................................................................................... 47 Elbow Angle Selection ....................................................................................................................... 47 Minimum Straight .............................................................................................................................. 48 Elbow Angle ........................................................................................................................................ 48 Elbow Throat ...................................................................................................................................... 48 Elbow Radius ..................................................................................................................................... 48 Rubberband ........................................................................................................................................ 48 Elbow Gores ....................................................................................................................................... 49 Join ..................................................................................................................................................... 49 Vertical Auto-Route ........................................................................................................................... 49

Routing Line ................................................................................ 51 Pedit .................................................................................................................................................... 51 Join ..................................................................................................................................................... 51

Elevation ............................................................................................................................................ 52 Slope ................................................................................................................................................... 52 Reference ........................................................................................................................................... 53 Placing Duct on a Routing Line ........................................................................................................ 53

CHAPTER 5. COLLISION CHECKING ................................... 55 Interactive Collision Checking .................................................. 55 View Collision ..................................................................................................................................... 56 Query Duct ......................................................................................................................................... 56

Batch Collision Checking ........................................................... 57 Color ................................................................................................................................................... 58 Check ................................................................................................................................................. 58

View .............................................................................................. 59 View .................................................................................................................................................... 59 Query .................................................................................................................................................. 59 Next .................................................................................................................................................... 59 Recolor ............................................................................................................................................... 59

CHAPTER 6. EDIT TOOLS .................................................... 60 CADPIPE Edit Tools .................................................................. 60 Move Fitting(s) .................................................................................................................................. 60 Copy Fitting(s) ................................................................................................................................... 60 Erase Fitting(s) .................................................................................................................................. 60 Mirror Fitting(s) ................................................................................................................................. 61 Rotate Fitting(s) ................................................................................................................................. 61 Rotate 3D Fitting(s) ........................................................................................................................... 61 Query Fitting ...................................................................................................................................... 62 Elevation Information ........................................................................................................................ 62 Place Size ........................................................................................................................................... 63 Place Elevation .................................................................................................................................. 63 Place Length ...................................................................................................................................... 63 ISOLATE ........................................................................................................................................... 63 Digitize Run ....................................................................................................................................... 64 Select Objects .................................................................................................................................... 64 Ignore Annotation .............................................................................................................................. 64

Tag Tools Sub-Menu ................................................................... 64 BOM Tag ........................................................................................................................................... 64 Edit Tag# ............................................................................................................................................ 65 Renumber Tag # ................................................................................................................................ 65

Edit Digitized Items for Sub-Menu............................................ 66 Edit Vane/Seam Info .......................................................................................................................... 66 Edit Joint Info .................................................................................................................................... 66 Edit Fabrication/Purchase Status ...................................................................................................... 67

Edit Lining Descriptions .................................................................................................................... 67 Edit Wrapper/Insulation Info ............................................................................................................ 67 Edit Reinforcing Info ......................................................................................................................... 67

CHAPTER 7. HVAC SPECIFICATIONS ................................. 68 Straight Lengths .......................................................................... 68 Default Lengths ................................................................................................................................. 68

Rectangular Fittings and Round/Oval Fittings ........................ 69 Fitting Dimensions ............................................................................................................................. 69 Fitting Name ...................................................................................................................................... 70 Joints .................................................................................................................................................. 70 Joint Name ......................................................................................................................................... 71 Joint Allowance .................................................................................................................................. 71 Flange Size ......................................................................................................................................... 71 Gasket Size ........................................................................................................................................ 72 Rectangular Systems-Round/Oval Systems .................................................................................... 72 System Name ..................................................................................................................................... 73 Material ............................................................................................................................................. 73 Gauge/Length .................................................................................................................................... 74 Joint Lookup ...................................................................................................................................... 74 Layer and Color Control ................................................................................................................... 75 Vanes/Seams ...................................................................................................................................... 77 Vane Descriptions .............................................................................................................................. 77 Seam/Styles Descriptions .................................................................................................................. 78 Seam Configurations ......................................................................................................................... 78 Fabricatoin/Purchase Settings ........................................................................................................... 79 Lining Descriptions ............................................................................................................................ 79 Wrapper/Insulation Descriptions ...................................................................................................... 80 Reinforcing Descriptions ................................................................................................................... 80

Backup and Restore Databases.................................................. 81 Backup ............................................................................................................................................... 81 Restore ............................................................................................................................................... 82 Specification Database Names ......................................................................................................... 82

CHAPTER 8. ACCESSORIES ................................................. 83 Database Setup .................................................................................................................................. 83 Creating and Modifying C.F.M. Databases ..................................................................................... 83

Rectangular, Round and Linear Diffusers ................................ 85 Sizing Diffusers ............................................................................ 86 Use C.F.M. to Size Diffuser .............................................................................................................. 86 C.F.M. Database... ............................................................................................................................ 86 C.F.M. ................................................................................................................................................ 86

Diffuser Dimensions .................................................................... 86

Neck Length and Neck Width .......................................................................................................... 86 Elevation ............................................................................................................................................ 87 Angle .................................................................................................................................................. 87 Length, Width and Height ................................................................................................................. 87 Supply/Return .................................................................................................................................... 87 Contains Damper ............................................................................................................................... 87 Horizontal Placement ......................................................................................................................... 87

Text Options ................................................................................ 87 Text ..................................................................................................................................................... 87 Comment ............................................................................................................................................ 88 System ................................................................................................................................................ 88 Area .................................................................................................................................................... 88 Grilles, Registers, and Louvers ........................................................................................................ 89 C.F.M. ................................................................................................................................................ 89

Grille, Register and Louver Dimensions................................... 89 Length, Width and Thickness ........................................................................................................... 89 Elevation ............................................................................................................................................ 90 Angle .................................................................................................................................................. 91

Text Options ................................................................................ 91 Comment ............................................................................................................................................ 91 System ................................................................................................................................................ 91 Area .................................................................................................................................................... 91 Supply/Return .................................................................................................................................... 91

Flex Duct/Spin Collar ................................................................. 91 Only Draw Flex Duct ......................................................................................................................... 92 Spin Collar Diameter ......................................................................................................................... 92 Spin Collar Length ............................................................................................................................. 92 Maximum Flex Length ...................................................................................................................... 92 Minimum Pipe Length ....................................................................................................................... 93 Graphic Representation .................................................................................................................... 93 Placement on Duct ............................................................................................................................. 93 Volume Damper and Scoop ............................................................................................................... 94

Fire Damper ................................................................................ 94 Placing Fire Damper .......................................................................................................................... 94

Fire Damper Dimensions............................................................ 95 Cheek and Wrapper .......................................................................................................................... 95 Inlet/Outlet Collar Length ................................................................................................................. 95 Wall Thickness ................................................................................................................................... 96 Use Separate Sleeve ......................................................................................................................... 96 Combo Smoke/Fire Damper .............................................................................................................. 96

Type of Fire Damper ................................................................... 96 Class ................................................................................................................................................... 96 Mounting ............................................................................................................................................ 96

Fire Damper Text Options ......................................................... 96 Comment ............................................................................................................................................ 96 System ................................................................................................................................................ 96 Area .................................................................................................................................................... 96 Auto-Route Fire Damper .................................................................................................................. 96

Other Dampers and Items .......................................................... 97 Comment ............................................................................................................................................ 98 System ................................................................................................................................................ 98 Area .................................................................................................................................................... 98

Access Doors ................................................................................ 98 Length and Width .............................................................................................................................. 99 Rectangular or Round ....................................................................................................................... 99 Side, Top or Bottom ........................................................................................................................... 99 Insulated ............................................................................................................................................. 99 Comment ............................................................................................................................................ 99 System ................................................................................................................................................ 99 Area .................................................................................................................................................. 100

VAV Boxes and Fan Units ......................................................... 100 Creating a VAV Box ......................................................................................................................... 100

Dimensions ................................................................................. 100 Length, Width and Height ............................................................................................................... 100 Angle ................................................................................................................................................ 101 Elevation .......................................................................................................................................... 101

Report Information ................................................................... 101 Text ................................................................................................................................................... 101 Comment .......................................................................................................................................... 101 System .............................................................................................................................................. 101 Area .................................................................................................................................................. 101 Inlet/Outlet Information .................................................................................................................. 101

Inlet/Outlet Dimensions............................................................ 102 Cheek and Wrapper ........................................................................................................................ 102 Length .............................................................................................................................................. 102 Side Offset ....................................................................................................................................... 102 Elevation Offset ............................................................................................................................... 102 Placing a VAV Box ........................................................................................................................... 102 Fan Unit ............................................................................................................................................ 103

Configure Accessory ................................................................. 103 Accessory Layers ............................................................................................................................ 103 Accessory Text ................................................................................................................................ 104 Tooltip Query ................................................................................................................................... 104 Available Tip Info ............................................................................................................................ 104 Tip Info to Display ........................................................................................................................... 104 Show Dynamic Tooltip Query .......................................................................................................... 105

Label Each Tip ................................................................................................................................. 105

CHAPTER 9. REPORTS ...................................................... 106 Duct and Fittings Reports ........................................................ 106 HVAC Reports........................................................................... 106 Accessory Report ...................................................................... 107

CHAPTER 10. SECTION VIEWS ......................................... 110 Sheet Layout .............................................................................. 110 New Layout ...................................................................................................................................... 110 New Layout with Wizard ................................................................................................................. 110 Model Space Viewport(s) ................................................................................................................. 111 Manual Setup .................................................................................................................................... 111

Section/Floor Plan Views. . . .................................................... 112 Setup/Generate ................................................................................................................................ Section .............................................................................................................................................. Floor Plan ......................................................................................................................................... Generate ..........................................................................................................................................

112 112 114 115

Clear Clipping Planes............................................................... 116 Settings ....................................................................................... 116 Dimension Styles ............................................................................................................................. DIMSCALE ..................................................................................................................................... DIMASZ .......................................................................................................................................... DIMTXT ..........................................................................................................................................

116 116 117 117

Symbols ...................................................................................... 117 North Arrow ..................................................................................................................................... Revision Cloud ................................................................................................................................. Flow Arrow, Small ............................................................................................................................ Flow Arrow, Large ............................................................................................................................ Battery Limit ....................................................................................................................................

117 118 118 118 118

Annotation ................................................................................. 119 Place Coordinates ............................................................................................................................ 119 W.P. Elevation .................................................................................................................................. 119

CHAPTER 11. ARCHITECTURAL FUNCTIONS ...................... 120 Columns ..................................................................................... 120 Placing Rectangular Columns ......................................................................................................... 120 Height ............................................................................................................................................... 121 Width and Depth .............................................................................................................................. 121

Beams as Columns..................................................................... 122 Rotate ............................................................................................................................................... 123

Beams ......................................................................................... 123 Placing Beams .................................................................................................................................. 123 Pick Point ......................................................................................................................................... 123 Beam Size ......................................................................................................................................... 124 Pick a Column .................................................................................................................................. 125 Place By: Top, Center, Bottom ....................................................................................................... 126 Beam Orientation (channel, angle, and tee beams) ....................................................................... 126 CADPIPE Beam Database ............................................................................................................. 127 Edit Beam DB .................................................................................................................................. 127 Beam Names .................................................................................................................................... 127 Add... ................................................................................................................................................ 128 Change... .......................................................................................................................................... 128 Remove ............................................................................................................................................ 128 Print .................................................................................................................................................. 129

Joist ............................................................................................ 129 Placing Joists ................................................................................................................................... 129

Joist Dimensions ........................................................................ 129 Width and Depth .............................................................................................................................. 129 Elevation 1 and Elevation 2 ............................................................................................................. 130 Number of Webs (on top) ................................................................................................................ 130 Place By: Top, Center, Bottom ....................................................................................................... 130 Length, Angle, and Web Length ...................................................................................................... 130

Walls ........................................................................................... 130 Drawing Walls .................................................................................................................................. 131

Grids........................................................................................... 132 Drawing a Ceiling Grid .................................................................................................................... 132

Grid Dimensions........................................................................ 133 Width and Depth .............................................................................................................................. 133 Elevation .......................................................................................................................................... 133 Rotation ............................................................................................................................................ 133

Lights ......................................................................................... 133 Light Dimensions ...................................................................... 134 Width, Depth and Height ................................................................................................................. 134 Elevation .......................................................................................................................................... 134 Rotation ............................................................................................................................................ 134 Draw ‘X” in Light ............................................................................................................................ 135

Archictural Configure .............................................................. 135 Architectural Layers ........................................................................................................................ 135 Architectural Tooltip Query ............................................................................................................ 136 Available Tip Info ............................................................................................................................ 136

Tip Info to Display ........................................................................................................................... 136 Show Dynamic Tooltip Query. ......................................................................................................... 136 Label Each Tip ................................................................................................................................. 136

APPENDIX A. AVAILABLE FITTINGS .................................. 137

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CHAPTER 1. INTRODUCTION TO HVAC Welcome to CADPIPE HVAC, an AutoCAD-based HVAC program that allows you to draw and report HVAC ductwork based on actual HVAC specifications. CADPIPE is a full three-dimensional software program that uses the conventional AutoCAD environment. It allows you to draw or Auto-Route duct runs in any direction without the need to change user coordinate systems or different projection planes, while automatically checking for interference problems. With CADPIPE HVAC, you have the ability to define different sets of system specifications (joint allowance, default lengths, flange size, and gasket size) based on your design requirements and shop standards. The AutoCAD HIDE, SHADE, and RENDER features can be used to create presentation drawings of your duct system designs. CADPIPE HVAC remembers every fitting you draw and can generate a bill of materials catalogued according to fitting type. Other CADPIPE features include an architectural function to create your background drawings and a complete HVAC accessory function to place and report all accessory items needed in your design.

HVAC Menus and Toggles CADPIPE HVAC replaces the AutoCAD standard pull-downs with a combination of AutoCAD and CADPIPE menus. These menus and toolbars contain all the functions needed for your HVAC designs and drawings. They are automatically loaded when you start a CADPIPE session and can be activated from within the drawing. The CADPIPE pull-downs available are Rect, Rnd/Oval, CPTools, Arch, Accs, Spec, and Drawing Sheets. HVAC also has three toolbars: Design/Utilities, Rectangular, and Round and Oval. These toolbars contain many commonly used commands found in the pull-down menus. Figure 1-1 lists the CADPIPE commands associated with each HVAC toolbar button:

Rectangular Toolbar

Round and Oval Toolbar

Design/Utilities Toolbar

Cut-to-Length

Cut-to-Length

Turn Down

Straight

Straight

Turn Up

Collision Check On/Off

Collision Check On/Off

Routing Line

Auto-Route

Auto-Route

CADPIPE Query

Undo last

HVAC Reports

Join to

Join to

Start a Run

Start a Run

Configure

Figure 1-1

Accessory Reports Set up Section View HVAC Help

HVAC-14 Accessories Toolbar Configure

Rct. Diffuser/ Rnd. Neck

Electric Duct Heater

CFM Database

Rnd. Diffuser

Hot Water Coil

Smoke Damper

Linear Diffuser

Flex Duct/Spin Collar

Backdraft Damper

Plenum

VAV Box

Fire Damper

Access Door

Fan Unit

Volume Damper

Grille

Custom Inline Fitting

Motor Damper

Register

Icon Menu

Rct. Diffuser/Rct. Neck

Louver

Note the Three toggles on the Rect and Rnd/Oval pull-down menus: Text Grouping On/Off, AutoSpec On/Off, and Coll Chk On/Off. The Text Grouping toggle controls how text is placed on the drawing. When Text Grouping is On, the HVAC text is grouped with its fitting and the Edit commands (Erase, Move, Copy, etc) affect both fitting and text. When Text Grouping is Off, the HVAC text can be modified independent of its corresponding fitting. The Collision Checking toggle tells CADPIPE to check for possible collisions every time you place a piece. You should leave this toggle off unless you are working in an area where interference is likely so CADPIPE HVAC can place the pieces without spending the time searching for collisions. The Auto-Spec toggle controls the specifications for the placement of straight pieces and elbows. When the toggle is on, CADPIPE HVAC uses the default dimensions defined in the specifications database. If Auto-Spec is off, the Fittings Specifications menu appears, prompting you for fitting dimensions (see Figure 1-2). Using these toggles properly will increase drawing speed and reduce possible errors in material selection and placement.

HVAC-15

Figure 1-2

Before You Start To Draw Before you begin to draw ductwork, you can customize the specification database to include your shop specifications for the systems you want to use in your designs and the default dimensions for each fitting (see Chapter 7 – HVAC Specifications). Drawing and editing duct in CADPIPE HVAC is very straightforward. The available fittings are listed in the pull-down menus, along with the functions allowing you to edit, report, and configure the duct you draw. When you select a fitting, CADPIPE automatically draws that fitting according to the specifications defined in the specification database and the parameters and options you defined in the Configure menu. You can change parameters at any time by selecting Configure from one of the menus. CADPIPE places the fitting using user-definable layers and colors associated with each system specification. Starting to Draw To actually begin drawing duct, select Start a Run from the Rect or Rnd/Oval pull-down. This tells CADPIPE to begin a new run of duct. The system prompts you for the elevation, starting point, and direction (the AutoCAD direction angle) of the run (see Figure 1-3).

HVAC-16

Figure 1-3

You can then begin selecting fittings from the pull-down menus. CADPIPE automatically adds any fitting selected to the last fitting drawn in a run unless you select Start a Run again. If you want to add to an existing run, just select Join to. CADPIPE HVAC prompts you to select a fitting. Select it by picking the end of the fitting you wish to join to (see Figure 1-4). This fitting becomes the last fitting drawn, and any subsequent fittings are added to this one.

Pick fitting here

Figure 1-4

You can use CADPIPE HVAC’s Auto-Route and Routing Line features to draw long runs of duct without selecting each and every fitting. Instead of selecting a fitting, choose the Auto-Route option from one of the Rect, Rnd/Ovl pull down menus or toolbars (see Chapter 4 – HVAC Auto-Route).

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CHAPTER 2. HVAC CONFIGURATION The CADPIPE HVAC Configuration options allow you to represent the ductwork and fittings in your drawings exactly as they will be fabricated and installed. For example, you have the option of showing flange joints with allowance for gaskets so that the dimensions on the drawing represent the exact dimensions as installed. You can show turning vanes in fittings that will be manufactured with turning vanes. You are able to differentiate between different systems of ductwork and automatically annotate drawings, saving time and avoiding costly installation errors.

Configure Rectangular To configure your ductwork, select Configure from the Rect pull-down menu or from the Rectangular toolbar. This menu option displays the CADPIPE HVAC Configuration Rectangular dialog box, allowing you to set the parameters that control each fitting you draw (see Figure 2-1).

Figure 2-1

Drag Duct This toggle allows you to place the first piece of ductwork and then drag it to another location or select a point and then move the duct to the desired relative location with the AutoCAD relative coordinate command (@X,Y,Z). This combines the capabilities of AutoCAD’s SNAP FROM command with CADPIPE’s Start a Run command (see Figure 2-2).

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Figure 2-2 Drag Duct

Metric The Metric toggle allows you to access a set of metric databases so that you can design your duct systems using metric dimensions. When drawing metric units, be sure that the AutoCAD UNITS command is set accordingly (see the AutoCAD manual). If you are going to draw using metric units, CADPIPE HVAC should be installed with the metric option. The metric database provided with CADPIPE HVAC is based on the DW/142 Specifications for Sheetmetal Ductwork. These are English specifications similar to the U.S. SMACNA standards. Solids The Solids toggle controls the method by which CADPIPE draws and presents HVAC. With solids on HVAC is drawn using AutoCAD soilds, and when toggled off, HVAC is drawn using polyface mesh. Show Flanges This toggle, when activated, tells CADPIPE to draw flanges for the joints that require a flange (see Figure 2-3). The system includes them in any collision checking and adds a gasket allowance depending on the settings in the specification database. The flange size and gasket allowance are determined from the Joint specification file. show flange on

show flange off

Figure 2-3

HVAC-19 Show Prompts Dialog This toggle controls the CADPIPE HVAC prompts dialog. If toggled ON, this dialog appears when you select a fitting or other placement command (see Figure 2-4). The dialog box lists your starting elevation and allows you to select a Snap Setting. If toggled OFF, the dialog will not appear.

Figure 2-4

Collision Checking This toggle tells CADPIPE HVAC to check for collisions every time a fitting is placed. The Color... button allows you to specify the color used to highlight a potential collision (see Chapter 5 – Collision Checking). Fitting Origin This option allows you to specify the starting elevation for your run of duct. If you choose At Top, then the elevation you define in the Base Elevation box signifys the top of the duct. If you select At Bottom, the elevation is measured to the bottom of the duct. All elevations are measured from the AutoCAD 0-Z coordinate. Rectangular Systems These selections contain a list of all rectangular systems that have been set up in the specifications database (see Chapter 7 – Specifications). Simply select the system you wish to draw. Base Elevation This option sets the dimension for the starting base elevation for any run of duct. It becomes the default elevation CADPIPE HVAC displays when prompting you for an elevation after choosing the Start a Run command. The Base Elevation is updated as you change elevations while drawing duct. Reinforcing This toggle tells CADPIPE to draw Reinforcing using the settings defined in the Reinforcing Settings dialog box.. This dialog is accessed by pressing the Reinforcing Settings. . . button. From here you can select the Reinforcing Type, the Angle information, The Spacing information, and/or the Rod information (see figure 2-5).

HVAC-20

Figure 2-5

Undo Back Options This toggle controls the behavior of the Undo Back command located on the Rect pull-down menu and Rectangular toolbar. When set to Classic Undo Last Fitting, the Undo Back command performs undos fitting by fitting. When set to AutoCAD UNDO BACK, the Undo Back command uses the same command as the AutoCAD Undo. Undo Back will then perform undos command by command. You can toggle between the two at anytime.

Configure Rectangular -- Text Options The Text Options tab allows you to set the parameters that control HVAC text. There are four sections in the Text Options tab with controls for different aspects of HVAC text: Display Selected Tag Type, Text Size Options, Tag Options, and Text Style (see Figure 2-6).

HVAC-21

Figure 2-6

Display Selected Tag Type The Display Selected Tag Type section allows you to determine what HVAC Text is placed on your drawing. Simply toggle the Tag Types you wish displayed as you draw (see Figure 2-7).

Figure 2-7

Tag Options The Tag Options section allows you to customize a Tag # Prefix and set a New Tag #. Text Size Options The Text Size Options section allows you to determine the size of the HVAC Text placed on your drawing. The Tag # and Text (PSPACE) fields allow you to set the size of text in Paper Space. The Tag # and Text (MSPACE) fields allow you to set the size of the text in Model Space.

HVAC-22 Text Style The TextStyle drop-down allows you to select an AutoCAD text style for your HVAC text. AutoCAD standard is the default style.

Configure Rectangular -- Vanes and Seams The Vanes and Seams tab allows you to select Vane and Seam options for your duct. Simply toggle which Vane/Seam you will be using (Longitudinal, Throat, and Segmented) and select a type from the corresponding Seam Type menu (see Figure 2-8).

Figure 2-8

Configure Rectangular -- Lining and Wrapper The Lining and Wrapper tab allows you to select Lining and Wrapper options for your duct. From here you can turn Lining and Wrapper on, set its Thickness and choose from existing Lining and Wrapper Descriptions (see Figure 2-9). To create Lining Descriptions and Wrapper seetings use the Lining Descriptions command and Wrapper/Insulation Descriptions command located on the Spec menu.

HVAC-23

Figure 2-9

Configure Rectangular -- Tooltip Query The Tooltip Query tab contains two main sections labeled Available Tip Info and Tip Info to Display, along with several buttons and toggles to set up the tooltip query function (see Figure 2-10).

Figure 2-10

HVAC-24 Available Tip Info The Available Tip Info field lists the available information that can be displayed when your cursor hovers over a CADPIPE item. Use the arrow buttons or double click items to add or remove tip info. Tip Info to Display The Tip Info to Display field lists the information that is displayed when your cursor hovers over a CADPIPE item (see Figure 2-11). Use the arrow buttons or double click items to add or remove tip info.

Figure 2-11

Show Dynamic Tooltip Query The Show Dynamic Tool Tip toggle turns the Tip Info Display On and Off. With the Show Dynamic Tool Tip toggle selected, CADPIPE displays the Tip Info (see Figure 2-11). With the Show Dynamic Tool Tip toggle unchecked, CADPIPE will not display the Tip Info. Label Each Tip The Label Each Tip toggle determines if the Tip Info Names are displayed along with the Tip Info. WIth the Label Each Tip toggle selected, CADPIPE displays the Tip Info Names and Tip Info (see Figure 2-12) With the Label Each Tip toggle unchecked, CADPIPE displays just the Tip Info (see Figure 2-13).

Figure 2-12 Figure 2-13

HVAC-25 Configure Round/Oval The Configure Round/Oval menu is identical to the rectangular menu except for three additional options (see Figure 2-14).

Figure 2-14

Rnd/Oval to Sqr: In Shape; Sqr to Rnd/Oval: Out Shape These options allow the user to draw round or oval fittings. To create round fittings, toggle on Round for both In Shape and Out Shape. To create oval fittings, toggle on Oval for each. These options also allow you to create round and oval fittings with different combinations of entering and exiting shapes. If you toggle Round on for In Shape and Oval on for Out Shape, you will create a fitting with a round entrance and oval exit end. Spiral Duct This toggle allows you to place spiral duct on your drawings.

HVAC-26

CHAPTER 3. DRAWING DUCTWORK CADPIPE HVAC offers you a quick, efficient way to make accurate drawings of ductwork. All duct and fittings drawn with CADPIPE HVAC call their dimensions from the specification databases (where you can enter your shop specifications). You have total control over how each fitting is represented on the drawing.

Starting to Draw Start a Run This command must be used every time you start a new run of duct. To select Start a run, go to the Rect or Rnd/Oval pull-down menu or Rectangular or Round/Oval toolbar. When you select Start a run, the following three prompts appear on the command line. Starting elevation :

The default elevation that appears is the base elevation set in the Configuration menu. You may change the elevation for the new run by entering a number and pressing Enter. From point:

Move the cursor and select a point to start the new run. Angle:

This prompt refers to the AutoCAD drawing angle or direction you want the duct run to be drawn in (0 degrees is to the right, 90 to the top, 180 to the left, and 270 to the bottom) (see Figure 3-6). After entering elevation, location, and direction, the system places any fitting you choose. When you select the next fitting, it is joined to the first with the entering cheek and wrapper dimension of the second fitting matching the exit cheek and wrapper dimension of the first fitting. All subsequent fittings are added in the order that you select them. In some cases, the fitting you select will not be placed until the Fitting Specifications menu appears and dimensional data is entered (see Fitting Specifications Menu explanation in this chapter). Join To This command allows you to join to an existing straight or fitting and continue to draw from there. When you select Join to a run from the Rect or Rnd/Oval pull-down menu or from the Rectangular or Rnd/Oval toolbars, CADPIPE HVAC prompts you. Select a duct to join to:

After you pick the fitting, CADPIPE HVAC automatically sizes the next piece’s opening to match the exit end of the fitting you joined to. In addition, CADPIPE HVAC sets the elevation, layer, system, and color to match that of the fitting you are joining to.

HVAC-27

Fitting Specifications Menu Fitting Selection When a fitting is selected from a menu, the system places it on the drawing or a Fitting Specifications menu appear on the screens (see Figure 3-1). The Fitting Specifications menu appears each time you select a fitting that has multiple openings or offsets (tee, transition, cross, or offset), or when a fitting is selected with Auto-Spec Off. The Fitting Specifications menu allows you to change fitting dimensions, as well as turn the fitting up or down. The dimensions that first appear in the Fitting Specifications menu are the default spec dimensions from the specifications database (see Chapter 8 – CADPIPE HVAC Specifications).

Figure 3-1

The left half of the Fitting Specifications menu contains a list of dimensions that determine the size of the fitting (Cheek 1, Wrapper 1, Length, etc.). The right half contains the Normal, Turn Up, and Turn Down orientation buttons, as well as a picture of the fitting with dimension labels (C1, W1, T1, etc.). You can edit the fitting dimensions by double clicking on the Fitting Dimensions text in the list on the left. When you do this, an edit box appears allowing you to enter a new dimension (see Figure 3-2).

HVAC-28

Figure 3-2

After you have changed dimensions and selected OK, CADPIPE places the fitting sized according to the dimensions entered. The system automatically turns Auto-Spec On after a fitting is placed. This ensures that the next fitting has the same entering dimensions. If you want to enter a dimension other than the default before you place a fitting, turn Auto-Spec Off from the Rect or Rnd/Oval pull-down menus before you select the fitting.

Up, Down, Normal-Rectangular and Oval Fittings The Fitting Specifications menu also contains the Turn Up and Turn Down commands. The commands Turn Up and Turn Down can also be activated from the Design/Utilities toolbar. The up and down directions in CADPIPE HVAC are defined relative to the AutoCAD world coordinate system. The world X-Y plane is considered the ground, so the up and down directions are the world (+) or (-) Z directions, respectively. The Turn Up and Turn Down commands are defined so that any fitting can be started in a vertical direction, or any fitting can be drawn or turned in a vertical direction. This is done by turning Auto-Spec Off before you select the fitting or selecting the Turn Up or Turn Down buttons from the Design/Utilities toolbar. When you turn Auto-Spec Off and select a fitting, the Fitting Specifications menu appears, from which you can select the Turn Up or Turn Down button. You may turn up or down with any elbow or any fitting with multiple exits (tee, cross, Y-branch, etc.) (see Figure 3-3).

HVAC-29 Y-Branch

Tee

Elbow

Figure 3-3

If the fitting you choose to turn up with is an elbow, you can continue to draw in the vertical selecting any fitting just as you can in the plan view or horizontal mode. It is important to note that with round fittings you have the option to select a roll angle when you choose Turn Up or Turn Down while rectangular and oval fittings will only allow you to turn up or down (see Up, Down, Normal-Round Fittings in this Chapter). When you choose an elbow or turning fitting when drawing a vertical run, the system presents the Select Angle dialog box (see Figure 3-4).

Figure 3-4

HVAC-30 This box allows you to choose the available angles for that fitting to return to a horizontal direction (see Figure 3-5). Rectangular fittings can only return to horizontal using four available directional angles: 0, 90, 180, and 270 degrees. Note: These angles correspond to the AutoCAD drawing direction in plan view, 0 to the right, 90 to the top of the screen, 180 to the left, and 270 to the bottom of the screen.

5. Continue in Plan 4. Select Elbow Select Angle Direction 90

3. Select Straight to Continue in Vertical

2. Select Tee Select Turn Up

Figure 3-5 1. Drawing in Plan

Round fittings can return to horizontal using any angle (see Up, Down, Normal-Round Fittings in this chapter). When you select a fitting with secondary branches (tee, cross, Y-branch, etc.) while drawing a vertical run, the Select Angle dialog box appears allowing you to set a direction for the branches. The main run may continue in the vertical. To place fittings from the branches, select Join to from the Rect or Rnd/Oval pull-down menu. The system prompts you with the message. Select a duct to join to:

Touch the exiting end of the branch (see Figure 3-6). Once the system has returned to the horizontal direction, it continues in that direction until Turn Up or Turn Down is selected again.

HVAC-31

Continue vertically or Join to branch

Figure 3-6

Up, Down, Normal-Round Fittings The process to Turn Up or Turn Down using round fittings is the same as rectangular or oval fittings with a few additional options. With round fittings, you have the option to roll the fitting as you turn up or down. When you select Turn Up or Turn Down, the system presents you with the HVAC Riser Mode dialog box (see Figure 3-7).

Figure 3-7

Use this dialog box to select a roll angle for the fitting as it turns up or down. This angle can be any angle from 0 to 90 degrees rolling to the left or 0 to 90 degrees rolling to the right. The system continues to draw at that angle until you select another elbow (see Figure 3-8).

HVAC-32

Figure 3-8 SW ISO view

Plan view

When you select another elbow, the system brings up the Select Angle dialogue box, allowing you to select an angle to return to horizontal or to continue in the vertical if the elbow is not a 90 degree elbow (see Figure 3-9). To return to horizontal, activate the Go to Plan button and pick or enter an angle to continue to draw.

Figure 3-9

Ductulator The Duct Calculator or Ductulator is a calculator that solves for the correct duct sizes to keep equal air flow volume. The Duct Calculator can be activated from the CPTools pull-down menu or any Fitting Specifications box. The Duct Calculator calculates the round equivalent of any rectangular duct (see Figure 3-10).

HVAC-33

Figure 3-10

By knowing the round diameter, you can then solve for any cheek or wrapper size of rectangular duct to maintain equal volume of air flow. The cheek, wrapper, or round sizes can be entered by selecting the appropriate box followed by typing in the value from the keyboard. The options to Calculate Round or Calculate Rectangular can then be used to calculate the appropriate dimension. By entering the cheek and wrapper dimensions of a piece of duct, you can calculate the round equivalent. If you want to set the cheek at another dimension and want the system to calculate the new wrapper dimension, you need only to enter the new Cheek dimension, leave the Round Diameter as is, and blank the Wrapper box. When you select Calculate Rectangular, the system will give you a new Wrapper dimension. The Previous Results box lists the last five calculations that have been performed for your reference. View Drawing This option allows you to view the drawing without exiting the Fittings Specification menu. This prompt appears at the command line. Press a key to return to Fitting Specifications Menu...

Pressing any key returns the Fitting Specifications menu to the screen.

Special Fittings This section of the chapter deals with certain fittings that have some special dimensions or attributes that need additional explanation. Straight The Straight option places a piece of straight duct using the default length and joint allowance established for the system you have selected in the Configuration menu (see Chapter 2 – HVAC Configuration). This default length is determined in the HVAC specifications database (see Chapter 7 - HVAC Specifications). When the straight is placed, the allowance for the particular joint is subtracted from the default length and the fitting is drawn accordingly. If the default length is 60" and the joint allowance is 1/2", the straight duct appears on the screen as 59" in length (see Figure 3-11).

HVAC-34

Figure 3-11

Cut to Length The Cut to Length option is used to define a length for a straight piece of duct as you place it, or to place straight duct between two fittings. If you select Cut to Length from the pull-down or from the Rectangular toolbar, the following prompt appears. Join/Length

At this prompt you have three options. First, you can type a length such as 40" and the system will draw a 40" length of straight duct. Second, you can pick two points to determine the length or you can use the Join option (type J and Enter) and then pick another duct or fitting to connect to. The fitting or duct you connect to must be aligned so as to allow for connection with a straight. Note: When you enter a length, the system draws the duct that exact length. It does not deduct any joint allowance from the length as it does for default duct.

Using the Join option rather than typing a length ensures that the proper connection is accounted for. If the fitting requires a gasket allowance, the Join option connects the fittings, accounting for the gasket. When you type J and Enter, the following prompt appears. Select a duct to join to:

Select the fitting to which you wish to connect, and the system places it accounting for proper length and connection type (see Figure 3-12).

HVAC-35

Figure 3-12

The Cut to Length command can also be used to draw long runs of duct. When you select a length or distance that is greater than the default length straight specified in the specifications database, the system places the correct number of straight (default length) pieces and then a Cut to Length piece to make up the difference (see Figure 3-13). Note: If you are joined to a fitting and select Cut-To-Length, you only need to select one point to determine the distance. The system draws the cut to length piece from the last fitting drawn.

Figure 3-13

Drop Cheek Fittings The Drop Cheek Fittings are elbows, tees, crosses, and Y-branches that move in both the horizontal and vertical planes at the same time. A drop cheek elbow, for example, turns right or left while moving the exit end (C2,W2) up or down depending on the wrapper offset dimension (see Figure 3-14). All drop cheek fittings can move in two planes at the same time while changing the sizes of the exit ends (see Figure 3-15). Note: The Wrapper Offset direction up or down is determined by entering a positive (+) number for up and a negative (-) number for down.

HVAC-36

Figure 3-14

Figure 3-15

Offsets and Transitions Offsets and transitions are special fittings because they can be drawn so that the exiting end (C2, W2) can move right or left (Cheek Offset) or move up or down (Wrapper Offset). They can also be used to connect fittings that are different sizes and are at different elevations.

Cheek and Wrapper Offset The Cheek Offset is always measured from the right side of the fitting. A positive number (+) moves the right side of the fitting that distance to the right while a negative number (-) moves the right side of the fitting that distance to the left. The right side of the fitting is determined by the direction in which the fitting was drawn (see Figure 3-16).

HVAC-37

Figure 3-16

When you select the Cheek Offset from the Fitting Specifications menu, the system provides you with a quick method to center the fitting, keep the fitting straight on the left, or keep the fitting straight on the right. Each time you select the Cheek Offset to edit, a Fittings Dimensions box gives you the option buttons Flat on Right, Center Offset, and Flat on Left (see Figure 3-17).

Figure 3-17

When you select one of these options, the system computes the amount of offset needed to draw the fitting correctly. It is important to remember that a 0 cheek offset keeps the fitting flat on the right.

HVAC-38 The Wrapper Offset direction up or down is determined by entering a positive (+) number for up and a negative (-) number for down. When you select the Wrapper Offset from the Fitting Specifications menu, the system provides you with a quick method to center the fitting, keep the fitting flat on the top, or keep the fitting flat on the bottom. Each time you select the Wrapper Offset to edit, a Fittings Dimensions box gives you the option buttons: Flat on Top, Center Offset, or Flat on Bottom (see Figure 318).

Figure 3-18

When you select one of these options, the system computes the amount of offset needed to draw the fitting correctly based on the Fitting Origin setting At Top or At Bottom that is active in the Configuration dialog box. It is important to remember that a 0 wrapper offset keeps the fitting flat on the top if the At Top button is selected in the Fitting Origin box on the Configure Rectangular dialog box, or flat on bottom if At Bottom is selected (see Figure 3-19).

Figure 3-19

HVAC-39

Radius Cheek and Radius Wrapper The Offset fitting can be drawn with the radius on the cheek side (Radius Cheek) or on the wrapper side (Radius Wrapper) (see Figure 3-20).

Figure 3-20

The system default is Radius Cheek, which places the radius on the cheek side. When you select the Radius Wrapper from the Fitting Specifications menu, the radius is drawn on the wrapper side of the offset (see Figure 3-21).

Figure 3-21

HVAC-40 Join To The Join to button found at the bottom of the transition and offset Fitting Specifications menu is a useful function that connects two ducts or fittings of different sizes or at different elevations using an offset or transition. When you select an offset or transition, the Fitting Specification menu appears (see Figure 3-22).

Figure 3-22

When you select the Join to option, the following prompt appears. Select duct to join to:

This prompt allows you to select the duct you want to join to. Pick the fitting you want to Join To on the entering end (see Figure 3-23).

Figure 3-23

HVAC-41 The offset or transition is automatically sized to connect the duct or fittings. The Fitting Specifications menu appears a second time allowing you to check the dimensions to determine whether you want to use that fitting. You might find the length too long or the offset too big and decide to move or modify the existing duct before you join to it. If the dimensions are acceptable, select OK and the system creates the offset or transition to connect the duct (see Figure 3-23). Note: The offset and transition Join To option will join fittings at different elevations and different sizes

.

Takeoffs and Taps The CADPIPE HVAC software allows you to place takeoffs (Straight and Radius) and taps (Rectangular and Round, Straight, or Reducing) on straight duct, transitions, and reducers. The takeoffs and taps can be placed on the side, top, or bottom of rectangular or round/oval duct (see Figure 3-24).

Figure 3-24

To place a takeoff, select Takeoff from the Rect pull-down menu. When you select Takeoff, a secondary menu appears with the options to place a Straight or Radius takeoff either With the Flow or Reverse Flow. These selections ensure the takeoff is placed correctly on the duct (see Figure 3-25). Note: The Flow is determined by the direction in which the duct is drawn.

Figure 3-25

HVAC-42 When you select a takeoff or tap, the Placement Options dialog box appears (see Figure 3-26).

Figure 3-26

This dialog box has three options for the placement of takeoffs and taps: Align with Diffuser, AutoRoute to Diffuser, and Place. Align with Diffuser This option aligns the takeoff or tap with a diffuser located on the drawing (see Chapter 9 – HVAC Accessories). When you select this option, the following prompt appears. Select duct to join to:

When you select the duct or fitting onto which to place the takeoff or tap, the following prompt appears. Select diffuser to align to:

Select the diffuser and the system automatically aligns the takeoff or tap with the diffuser (see Figure 327).

Figure 3-27

HVAC-43

Auto-Route to Diffuser The Auto-Route to Diffuser option aligns the takeoff or tap to the diffuser and then automatically connects to the diffuser using straight or round/oval duct and an elbow (see Figure 3-31). When you select Auto-Route to Diffuser, the HVAC Auto-Route dialog box appears (see Figure 3-28).

Figure 3-28

This allows you to change any Auto-Route parameters you wish. For a complete explanation of these settings, see Chapter 4 — Auto-Route. When you have set the parameters and select OK, the following prompt appears. Select a duct to join to:

Select the duct onto which you want the takeoff or tap to be placed. When you select the duct the system prompts you. Select a diffuser to align to:

After selecting the diffuser, the Fitting Specifications menu for the takeoff or tap appears (see Figure 3-29).

HVAC-44

Figure 3-29

This menu allows you to change a dimension for the takeoff or tap. The Cheek and Wrapper size of the takeoff or tap is automatically set when you select the diffuser, and the takeoff or tap is placed at the center of the side of duct unless you want to offset it up or down. If you choose to offset it up or down, select Offset from Cent by double clicking on the text. If you enter a (+) positive value, the takeoff or tap is offset that distance up from the center of the duct. If you enter a (-) negative value, the takeoff or tap is offset that distance down from the center of the duct (see Figure 3-30).

Figure 3-30

After you finish changing parameters and select OK, the system Auto-Routes the duct and fittings to the diffuser (see Figure 3-31).

HVAC-45

Figure 3-31

Place This option places the takeoff or tap on the duct or fitting at the point you select. When you select Place, the Fitting Specifications menu for the takeoff or tap appears (see Figure 3-30). This dialog box appears so you can set the dimensions for the size and angle of your takeoff or tap and the offset from the center for the takeoff or tap. Note: The system places the takeoff or tap in the center of the side of the duct selected unless you set an Offset from Cent dimension before you place it.

HVAC-46

CHAPTER 4. AUTO-ROUTE/ROUTING LINE Auto-Route The Auto-Route function in CADPIPE HVAC allows you to create long runs of duct without having to select individual pieces. You have the option to use an Angle or Offset pattern when you Auto-Route (see Figure 4-1).

Angled Auto-Route

Offset Auto-Route

Figure 4-1

The Angled option uses one elbow. The Offset option uses two elbows, returning the Auto-Route to the original direction. The Auto-Route function can be used in both the horizontal and vertical directions. The system always uses as many default lengths of straight as possible in an Auto-Route with any additional lengths either added to the elbow or made as a short cut-to length straight piece. All default length straights used in the Auto-Route are given the same Tag #. You can Auto-Route from any fitting to which you are joined, or you can begin an Auto-Route by selecting Start a Run and selecting Auto-Route without choosing a fitting. Selecting Auto-Route from the Rectangular or Round toolbar or the Rect or Rnd/Oval pull-down menu activates the HVAC Auto-Route dialog box (see Figure 4-2).

Figure 4-2

Rectangular Auto-Route

HVAC-47

Figure 4-2

Round/Oval Auto-Route

These dialog boxes allow you to set the options that control the Auto-Route function. They appear every time you select Auto-Route from the menu. When you press OK, CADPIPE prompts you to select the ending point for the Auto-Route. It will then place fittings according to the options set in this dialog box. Type of Auto-Route This option tells CADPIPE which Auto-Route pattern you want to use (see Figure 4-1). An angled Auto-Route places only one elbow, while the offset Auto-Route uses two, allowing the run to continue in the same direction. Type of Elbow This option allows you to select the type of elbow used in the Auto-Route operation. Elbow Angle Selection This option allows you to define the angle for an Auto-Route. You can either enter an angle in the Elbow Angle edit box to the right, or if you do not know the angle, pick two points on the drawing to determine the angle (see Figure 4-3).

Figure 4-3

HVAC-48 Minimum Straight This option defines the minimum length of the cut-to-length pieces used in the Auto-Route. Cut-tolength pieces are required when there is a leftover length because the distance routed is not a perfect sum of default straight pieces. CADPIPE HVAC automatically places a cut-to-length piece to fill in this leftover length completing the run. If the cut-to-length piece required is less than the minimum straight, the leftover length is automatically added to the elbow (see Figure 4-4).

Figure 4-4

Elbow Angle This option allows you to set the angle for the elbow(s) used in the Auto-Route. When the angle selection is set to Enter, the elbow’s angle setting is defined in degrees. This setting should be greater than 0 and less than or equal to 90. Elbow Throat This option defines the minimum throat length for the elbow(s) used in the Auto-Route. The elbow’s throat may be longer than this value, depending on the leftover length and the minimum straight settings. Elbow Radius This option allows you to set the radius of the elbow(s) used in the Auto-Route. This option applies only when the Type of Elbow is set to Radius and overrides the default dimension radius setting in the specifications database. Rubberband The Rubberband option displays an image of the Auto-Route as you move the cursor. This image continues until you select a point. With the Rubberband option turned off, the system prompts you to pick an end point and then displays the Auto-Route image. At this point you may continue to pick points. When you have decided on the exact location to end your Auto-Route, press Enter.

HVAC-49 Note: If you wish to end an Auto-Route a certain distance from a wall or centerline, it is best to turn off the Rubberband mode so that you can pick an endpoint. Then, using the AutoCAD RELATIVE command (@X,Y,Z), move the end point to an exact location and press Enter.

Elbow Gores This option allows you set the number of gores in the elbow when auto-routing round/oval duct. Join The Join command in the Auto-Route function enables you to Auto-Route and join to another duct or fitting. This ensures that the connection type (gasket allowance) is accounted for when the Auto-Routed duct connects to the fitting or straight selected. The Join function works in the horizontal and vertical directions. In the horizontal, the duct or fittings must be at the same elevation. In the vertical, the Join function only works when Auto-Route is selected while a duct or fitting is in vertical mode and the connecting ducts are lined up in a way which facilitates a connection (see Figure 4-5).

Figure 4-5

Vertical Auto-Route The CADPIPE HVAC Auto-Route function allows you to Auto-Route in the vertical direction with the elbow returning to horizontal at a given elevation. To Auto-Route in the vertical, select Auto-Route while joined to a vertical opening (see Figure 4-6).

HVAC-50

Figure 4-6

When you select Auto-Route while joined to a vertical opening, the HVAC Auto-Route dialog box appears. When you have set the Auto-Route parameters and selected OK, the following prompt appears. Final Elevation:

The system is prompting for the final top or bottom elevation of the duct when it returns from vertical to horizontal. The elevation will be the top or bottom dependent on which button, At Top or At Bottom, has been selected in the Configuration dialog box. Enter an elevation value and press Enter to continue the Auto-Route. If Rubberband mode is on, an image of the Auto-Route appears on the screen; if it is off, the system prompts you for a pick point to end the Auto-Route. You can continue to drag or pick points until you are satisfied with the Auto-Route end location. Press Enter to complete the Auto-Route. When you select Auto-Route, as the duct moves in the vertical, the system allows you to return to horizontal in another direction. If you are auto-routing rectangular duct, you are limited to the horizontal directions 0 , 90 , 180 , and 270. If you are auto-routing round duct, the system allows you to choose any direction (see Figure 4-7).

Figure 4-7

HVAC-51

Routing Line The Routing Line function in CADPIPE HVAC allows you to place horizontal, vertical, rolled and sloped routing lines. Simply place duct on the line by selecting the line and its start and end points. When you select the Routing Line button from the Design/Utilities toolbar the following prompt appears on the command line: Elevation Pedit/Join/Elevation/Slope/Reference/:

The options sub-menu gives you a number of ways to edit and change your routing line. The available options are: Pedit, Join, Elevation, Slope, and Reference. Pedit The Pedit option is similar to AutoCAD’s PEDIT command. This option allows you to edit an existing routing line. When you select this option CADPIPE displays the current vertx, total vertices, X,Y, and Z (elevation) coordinates as well as the Pedit options: 2:7 x=82’-2 7/8” y=65’-11 3/4” z=10’-0” ##/Next/Previous/First/Last/Insert/Remove/Move/Elevation/:

The ## option selects a specific routing line vertex. Type the number of the vertex you wish to edit. The Next, Previous, First, and Last options select vertices on the routing line in relation to the currently selected vertex. The Insert option inserts a new vertex on the routing line after the currently selected vertx. Its elevation is the same as your current selection. The Remove option deletes the currently selected vertex. The Move option allows you to move the currently selected vertex to a new location. The Elevation option allows you to change the elevation of the currently selected vertex. Join The Join option allows you to combine separate intersecting routing lines. You can vertically join two routing lines at different elevations. This command requires three simple steps: Step 1: Type J at the Routing Line command prompt to select the Join option. Pedit/Join/Elevation/Slope/Reference/: J

Step 2: Digitize the first routing line to be joined. Step 3: Digitize the second routing line to be joined. Joining routing line ...

CADPIPE searches for an intersection of the end segments along the routing lines selected, trims the segments’ overlap back to the intersect point, and creates a single polyline retaining the elevations of the original routing lines.

HVAC-52 Note: If the joining segments of the two routing lines are in line, they MUST end at the same point for the Join option to work.

Elevation The Elevation option allows you to change the elevation of the routing line. Type E at the Routing Line prompt to select the Elevation option. Slope The Slope option lets you place a sloped routing line or sloped segments of a routing line. A sloped line is a normal routing line drawn with a sloped ratio. The slope value is not stored with the routing line, but is calculated when an item is placed on the line or the line is processed in some way. Type S at the Routing Line prompt to select the Slope option. This brings up the Slope Options dialog box which allows you to turn Slope on or off and enter the direction of the slope (see Figure 4-8).

Figure 4-8

To change the Slope settings, Click the Change Slope Value button. This brings up the Slope Value dialog box (see Figure 4-9). Enter the slope value as a ratio. For example, enter 1:96 for a line that slopes 1/8" to 1 foot. The maximum slope is a ratio of 1:10.

Figure 4-9

HVAC-53 Reference The Reference option allows you to start a new routing line at a specified distance from a point you select on another routing line. Using the Reference option is a 5 step process. Step 1: To select this option type R at the Routing Line prompt. CADPIPE prompts you to digitize a point on an existing routing line to reference the start point of your new routing line. Step 2: If your current elevation is different from the elevation you digitized, CADPIPE prompts you to update to the same elevation. You may select yes or no. Step 3: In this step, you are asked to set a distance from the reference point (from the last step) to begin your new routing line. Step 4: Next, pick the direction from the referenced point at which you wish to start your new routing line. Step 5: CADPIPE now knows the first point of your new layout line and prompts you for the next point. You may pick a point or type in coordinates. Placing Duct on a Routing Line The following example illustrates how to place duct on a routing line. After drawing and editing your routing line, select Auto-Route from the Rect or Rnd/Ovl menus or toolbars and the Auto-Route dialog box appears (see Fig 4-10).

Figure 4-10

From here, select the Routing Line toggle, set your elbow type and elbow throat, and click the Select Routing Line button and the fitting specification box appears (see Fig 4-11).

HVAC-54

Figure 4-11

Set your default straights to be used for the routing line and click ok. You are then prompted to pick the routing line. Digitize routing line :

Select the routing line and you are prompted to choose the starting and ending points. Digitize first point for AutoRoute on Routine Line: Digitize second point for AutoRoute on Routine Line:

After picking these point CADPIPE automatically places duct along the line you have selected.

HVAC-55

CHAPTER 5. COLLISION CHECKING CADPIPE provides you with two collision checking features that alert you to possible interference problems on your drawing. These features ensure that potential problems in coordination and installation are avoided, saving time and money. The Interactive Collision Checking can be activated at any time during the drawing process. When activated, the system alerts you any time there is interference with any 3-D object on the drawing. With Collision Checking on the system takes an instant longer to place fittings. This delay occurs because the system must search the database to see if there are any interfering objects before it places each piece. CADPIPE allows you to toggle collision checking on or off so that you can use it only when drawing in an area that presents potential interference problems. The Batch Collision Checking feature can be activated after the drawing is completed. It searches and highlights any interference problems on the drawing, allowing you to correct the problems before the drawing is issued.

Interactive Collision Checking To activate collision checking, select the Coll Chk On/Off from the Rect or Rnd/Oval pull-down menu or Collision Check from the Rectangular or Round/Oval toolbar (see Figure 5-1).

Figure 5-1

HVAC-56 When the Collision Checking toggle is on, the system automatically checks for any interference problems with any 3-D object on the drawing and alerts you when a collision occurs. The colliding objects will change color and a Collision Alert box appears (see Figure 5-2).

Figure 5-2

The Collision Alert dialog box has several options to choose from. View Collision The View Collision button changes views automatically and isolates the collision(see Figure 5-3). Selecting the OK button returns you to the drawing and the Collision Alert box. Query Duct

Figure 5-3

HVAC-57 Selecting Query Duct.... brings the Collision Query dialog box to the screen. This box contains all the dimensional data about the collision. The size, top, and bottom elevation of each object in collision is listed. The dimension and direction to correct the problem is calculated (see Figure 5-4).

Figure 5-4

When you are finished viewing the collision information, select OK. This returns you to the Collision Alert box and allows you to Continue to draw and do nothing about the collision or to Reject the last piece of duct or fitting drawn so that you can avoid the collision. By selecting Reject, the system removes the last drawn duct or fitting that collided, allowing you to take appropriate measures to avoid the collision. Because you know the amount needed to clear the interference, you can select a fitting such as an offset or drop cheek and set the cheek or wrapper offset to avoid the collision. If you leave Collision Checking On while you continue to place the next fitting, the system aids you in avoiding the collision. Note: Collision Checking can be activated at any time and detects collisions in any view with any object drawn using AutoCAD’s 3D surfaces. If you receive coordination drawings from other trades and they are using AutoCAD in 3-D, CADPIPE HVAC detects interference with any 3-D objects. CADPIPE also recognizes and detects collisions with Architectural Desktop items.

Batch Collision Checking The Batch Collision function is found on the CPTools pull-down menu. The Batch Collision Checking feature checks the entire drawing for any interference problems. The Collision Checking toggle does not need to be activated in order for the Batch Collision Checking function to work. When you select Batch Collision, the Batch Collision dialog box appears (see Figure 5-5). This dialog box presents you with the following options:

Figure 5-5

HVAC-58 Color The Color button activates the AutoCAD SELECT COLOR dialog box (see Figure 5-6). This allows you to select the color you want the system to use when it alerts you to a collision. The color selected is then displayed on the Batch Collision dialog box (see Figure 5-5).

Figure 5-6

Check Under the Check box, the commands All and Some are found. The All button tells the system to check the entire drawing (all displayed layers) for interference. The Some button allows you to choose a window to check for interference. When you select Some, the following prompt appears at the command line. Select objects:

You may select any objects you wish by picking individual objects or using any of the AutoCAD WINDOW options. When you finish selecting objects or selecting a window, the system dashes the objects selected and prompts you. Select objects:

Press Enter and the system checks for collisions while the following prompt appears on the command line. Checking for collisions among XX items.

CADPIPE shows the percentage of the area or drawing that has been checked. This number is updated until it reads 100 percent done. When finished, it shows you the number of collisions found and changes the color of the items on the screen to the Color you selected .

HVAC-59 Note: The larger the drawing area you wish to check, the longer CADPIPE takes to process the information.

View The View box on the Batch Collision dialog box contains three options. View This option works the same as the View option in the Interactive Collision Checking mode. When selected, it changes the view and brings up the View Collision dialog box (see Figure 5-3). Note: You may leave the Batch Collision command at any time to correct an interference problem. The system remembers all remaining collisions when you return to the Batch Collision command.

Query The Query option, like the View option, works in the same manner as explained in Interactive Collision Checking. Next The Next option zooms to the next collision found and allows you to View or Query it. This process repeats as long as there are collisions to check. Recolor The options found under the Recolor box, All and Current, are used to return the items found in collision to their original color. This can be done by selecting All before you exit the Batch Collision function or Current if you wish to make adjustments to each collision consecutively. This function is useful if there are a large number of collision problems to address. The color change remains until the All or Current button is activated. Note: The system creates a layer called COLLISION in your drawing whenever CADPIPE HVAC is initialized. This layer is used with the View option to display the colliding objects. This layer should not be turned off or frozen.

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CHAPTER 6. EDIT TOOLS The CADPIPE Edit functions are designed to make it easy to move, copy and erase CADPIPE items. The edit functions are found on the CPTools pull-down menu.

CADPIPE Edit Tools Move Fitting(s) This command allows you to move CADPIPE items. The Move Fitting(s) command only recognizes duct, CADPIPE architectural items, CADPIPE Commercial items, and HVAC accessories items. All other objects in the drawing are ignored. When you use Move Fitting(s), the following prompt appears. Select objects:

You may choose to select individual objects or use any of the AutoCAD WINDOW modes to select objects. When you have finished selecting objects and press Enter, the following prompts appear. Base point or displacement: Select a base point. Second point of displacement:

Select a location for the move and the object(s) are moved. The system displays on the command line the number of CADPIPE objects moved. Note: If you wish to move only text, use the Shift-Ctrl-right click keystroke combination and select Move Grouped Item from the pop-up menu.

Copy Fitting(s) This command works the same as Move Fitting(s), allowing you to copy CADPIPE items. The Copy Fitting(s) command only recognizes HVAC fittings, architectural objects, CADPIPE Commercial items, and accessories drawn using the CADPIPE commands. Any other objects on the drawing are ignored. The system prompts for Copy Fitting(s) are the same as those for Move Fitting(s). Note: Be sure to Join To the duct or fitting that has been moved or copied if you want to continue drawing from that duct or fitting.

Erase Fitting(s) This command allows you to erase CADPIPE items. The Erase Fitting(s) command only recognizes duct, architectural items, CADPIPE Commercial items, and accessories drawn using CADPIPE commands. Any other objects on the drawing are ignored. The system prompts for the Erase Fitting(s) command are the same as those for Move Fitting(s) command. Note: If you desire to delete only text from a CADPIPE item, use the Shift-Ctrl-right click keystroke combination and select Erase Grouped Item from the pop-up menu.Or type ee at the command prompt and select the text you wish to erase.

HVAC-61 If any CADPIPE items other than HVAC fittings or CADPIPE Commercial items are selected, the Erase CADPIPE Items dialog box appears. This allows you to erase, move, or copy only HVAC fittings and CADPIPE Commercial items rather than all CADPIPE items (see Figure 6-1).

Figure 6-1

Mirror Fitting(s) The Mirror Fitting(s) command is found on the enables you to mirror objects around a mirror line, which you define with two points. Mirroring works in any plane parallel to the XY plane of the current UCS. When you select Mirror Fitting(s) from the menu you are prompted to select the object to be mirrored. select ducts/fittings to mirror:

Refer to your HVAC Help files for more information on using this command.

Rotate Fitting(s) The Rotate Fitting(s) command enables you to rotate objects by choosing a base point and a relative or absolute rotation angle. When you select the Rotate Fitting(s) from the menu the following prompt appears. Select ducts/fittings to rotate:

After choosing an object, you are then prompted to select the base point for the rotation. Select objects: specify base point:

Refer to your HVAC Help files for more information on using this command.

Rotate 3D Fitting(s) The Rotate 3D Fitting(s) command enables you to rotate objects in 3D about a specified axis. You specify the axis of rotation using two points; an object; the X, Y, or Z axis; or the Z direction of the current view. When you select the Rotate 3D Fitting(s) from the menu the following prompt appears. Select ducts/fittings to rotate:

After selecting an object, you are then prompted to determine the axis for the rotation. Specify first point on axis or define axis by [Object/Last/View/Xaxis/Yaxis/ Zaxis/2points]:

HVAC-62 The Object option aligns the axis of roatation with an existing object. The Last option uses the last axis of rotation. The View option aligns the axis of rotation with the viewing direction of the current viewport that passes through the selected point. The Xaxis, Yaxis, and Zaxis options align the axis of rotation with one of the axes that pass through the selected point. The 2points option uses two points to define the axis of rotation. After choosing an axis for the rotation, CADPIPE prompts you to select a rotation angle and rotates the object. For more information about rotating in 3D please refer to the ROTATE3D section in the AutoCAD manual under Command Reference. Query Fitting The Query Fitting command is found on the CPTools pull-down menu and Edit toolbar. This command queries any CADPIPE object in plan or section view and lists important information about that object. When you select Query Fitting from the menu, the system prompts you with the following. Duct/Fitting to Query:

Select the fitting or CADPIPE item you want information about. You can only select one item at a time. The information is displayed in the HVAC Query dialog box and includes type, size, and elevation information about that fitting or item (see Figure 6-2).

Figure 6-2

Elevation Information Query Fitting displays the Top Elevation and Bottom Elevation for the opening nearest to the point picked on a duct or fitting. For example, if you select Query Fitting and pick near one side of a transition, Query Fitting displays the Top Elevation and Bottom Elevation for the opening on that side of the transition. Picking nearer to the other end of the transition causes Query Fitting to display the elevation information for the other opening. Query Fitting also tells you the top and bottom elevation for a sloping beam or joist at the exact point you pick along that beam or joist. For the elevation of an end, pick the exact endpoint. For the elevation at a given point along the beam or joist, pick that point.

HVAC-63 On the HVAC Query box, there are three buttons that can be activated to place annotation text information in the drawing. Place Size When you select this button, the system prompts you for a location to place size annotation text on the drawing. Pick Point For Size Text:

Pick a point on the drawing and the size text is placed. This text becomes part of the fitting or items and will move, copy, or erase with it. The text is oriented to the direction of the fitting or CADPIPE item. Place Elevation When you select these buttons, the system prompts you for a location for elevation annotation text. CADPIPE can place the top or bottom elevation of the item. Pick Point For Elevation Text:

Pick a point on the drawing and the centerline elevation text is placed. This text becomes part of the fitting or item, and will move, copy, or erase with it. The text is oriented in the direction of the fitting or CADPIPE item. Place Length When you select this button, the system prompts you for a location to place length annotation text on the drawing. Pick Point For Length Text:

This text becomes part of the fitting or items and will move, copy, or erase with it. The text is oriented to the direction of the fitting or CADPIPE item. ISOLATE The ISOLATE command allows you to isolate a duct run or any items you choose from the rest of the drawing. When you select ISOLATE, the CADPIPE HVAC - ISOLATION dialog appears (see Figure 63).

HVAC-64 Digitize Run The Digitize Run button allows you to pick any duct run on your drawing. After clicking the button you are prompted to select a run. Simply click on any part of a duct run and CADPIPE brings up a View Entities Box with an isolated view. Select Objects The Select Objects button allows you to pick any objects on your drawing. After clicking the button you are prompted to select objects. Simply click on any object or group of objects. CADPIPE displays a View Entities Box with an isolated view of your selected objects. Ignore Annotation The Ignore Annotation toggle tells CADPIPE to either include or ignore Annotation in the isolated views.

Tag Tools Sub-Menu BOM Tag This function allows you to mark any non-CADPIPE item and enables it to be included in your BOM reports. When you select this command you are prompted to pick an object. Select objects:

At this prompt select the item to place a BOM Tag, press Enter, and the CADPIPE BOM Tag dialog box pops up (see Figure 6-4). From here you can set a BOM Name for the object and the Comment, Size, Weight, System, Material, and Connection information for the object. This information appears in the BOM report.

Figure 6-4

HVAC-65 Edit Tag# The Edit Tag# function allows you to edit a tag# on your duct or fitting and updates the entity data so that the new tag# is correctly reported when you generate HVAC reports. When you select Edit Tag# from a menu, the following prompt appears. Select Tag Number to Edit:

When you pick a fitting, the Edit Tag Number dialog box appears (see Figure 6-5).

Figure 6-5

The dialog box shows the Old Tag Number: XX and allows you to enter a New Tag Number: XX. After you enter a new number in the box and select OK, the system updates the tag# on the fitting. Note: Be sure to use Edit Tag# rather than the AutoCAD PROPERTIES or MODIFY ENTITY commands so that your HVAC reports show the correct information. Editing tag numbers with any command other than Edit Tag# will corrupt the fitting

Renumber Tag # The Renumber Tag# function allows you to renumber tags of a specified run or all the runs in your drawing. After choosing the numbering method, the starting tag number, and the run(s) to be changed, the drawing is automatically updated. To renumber a run, select the Renumber Tag# from the CPTools pulldown menu. The Renumber Tag# dialog box appears (see Figure 6-6).

Figure 6-6

This box gives you the option to select a numbering method, the starting tag number, and the tag prefix.

HVAC-66 Select Match for the numbering method if you want to number your run with like pieces having the same tag number. Select Unique if you want each piece to have a different tag number. Either selection numbers them in numerical order from the starting number you have selected. Set the Starting Tag Number and the Tag Prefix. Then select the Pick Run button. The Renumber All button renumbers all the runs in your drawing at one time. The system issues the following prompt. Pick run to renumber:

Pick the run on your drawing you want renumbered. After the selected run is renumbered, the Renumber Tag Number dialogue box reappears. You may select additional runs or click the Cancel button to exit the command.

Edit Digitized Items for Sub-Menu Edit Vane/Seam Info The Edit Fitting Vane/Seam Info function allows you to edit the vane and/or seam info for one or more fittings on a drawing. To edit the vane/seam info, select Configure from the Rect or Rnd/Oval menus and set your desired vane/seam info in the Configure dialog box (see Chapter 2-- HVAC Configuration). Once you’ve set the info, choose Edit Fitting Vane/Seam Info from the CPTools menu. The following prompt appears on the command line: Edit Vane & Seam info of selected ducts/fittings: Select objects:

Use any of the AutoCAD selection commands to choose the duct or fittings you wish to apply the new vane/seam info and press Enter. Edit Joint Info The Edit Joint Info function allows you to edit the joint info for duct and accessories on your drawing. When you select this command from the menu, the following prompt appears: Duct/Fitting end to Edit:

At this prompt select the item to edit and the Edit Joint of selected Item dialog appears listing the joint info for the selected object (see Figure 6-7). This dialog lists the current joint information and gives you a list of joint types. Select the new joint you wish to apply to your duct or fitting, click OK, and CADPIPE updates the joint information.

Figure 6-7

HVAC-67 Edit Fabrication/Purchase Status The Edit Fab/Purchase Status function allows you to edit the fabrication status for duct and fittings on your drawng. When you select this command from the menu, the following prompt appears: Select ducts/fittings to Edit Fab Status:

Select the item to edit and the Edit Fabrication Status dialog appears (see Figure 6-8).

This dialog box allows you to set how the fitting/duct appears in your reports. Select either For Fabrication or For Purchase and click OK. Edit Lining Descriptions This command allows you to edit the Lining Descriptions defined in the Lining Settings dialog box. Edit Wrapper/Insulation Info This command allows you to edit the Wrapper/Insulation defined in the Wrapper Settings dialog box. Edit Reinforcing Info This command allows you to edit the Reinforcing Information defined in the Reinforcing Settings dialog box.

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CHAPTER 7. HVAC SPECIFICATIONS The Spec Database in CADPIPE HVAC allows you to define the default dimensions for every fitting as well as the System Specifications for any System you want to create. Options located on the Spec pull-down allow you to edit specifications databases for rectangular or round/oval fittings and systems.

Straight Lengths Default Lengths The Default Lengths option is found in the Spec pull-down. When you select Default Lengths, the Default Length dialog box appears (see Figure 7-1). The Default Length dialog box allows you to set up default lengths for straight duct to be used in your Rectangular or Rnd/Oval Systems databases. CADPIPE HVAC uses these lengths when you select default duct from any of your menus based on the System selected in the Configuration menu. To ensure proper dimensions for a run of duct, the joint allowance dimension from the Joints database is subtracted from the default length as the system draws each straight (see Figure 7-2). Figure 7-1

2” Water Guage System Joint Allowance 1- 7/8”

1” Water Guage System Joint Allowance 1/2”

Figure 7-2

HVAC-69

Rectangular Fittings and Round/Oval Fittings When you select Rectangular Fittings or Round/Oval Fittings from the Spec pull-down, a submenu containing all fittings available in CADPIPE HVAC are displayed. Select a fitting name and the Fitting Specifications menu for that fitting appears (see Figure 7-3). The Fitting Specifications menu

Figure 7-3

contains a number of options for changing fitting dimensions. Fitting Dimensions When the Fitting Specifications Menu appears, you can set your standard default dimensions. You can set defaults for throats, length, radius, cheek and wrapper offsets, etc. When Radius Factor is selected for round and rectangular radius elbows, the valve for Radius 2 toggles to represent a proportion of the larger of Cheek 1 and Wrapper 1 (usually Cheek 1). When a Radius Factor is not activated, Radius 2 represents a set default radius. When Radius Factor is entered for Radius 2, the value represents a proportion to the duct size of whatever opening the elbow is joined to. For example, in a 24x12 run, if the radius factor is set to .5, the system automatically adjusts the radius to 12 (.5 of 24) and then draw the elbow correctly. Any dimension set in the Specifications Database becomes the default dimension that appears on the Fitting Specifications Menu as you draw. To change a dimension, double click on it in the text box. A Fittings Dimensions dialog box appears (see Figure 7-4). Type the new dimension in the Enter New Value field and select OK.

Figure 7-4

HVAC-70 These new dimensions appear when you select the fitting from the Rect or Rnd/Oval pull-down menus or from the Rectangular or Round/Oval toolbars. The only exceptions are the CHEEK 1 and WRAPPER 1 dimensions. They are set to the dimensions of the preceding fitting as long you are joined to that run. Fitting Name The Fitting Specifications Menu also includes the option to change the name of the fitting. This name appears on HVAC Reports if the fitting is found on the drawing. To change the name, click on the Fitting Name box and enter a new name. You are limited to 14 characters in the report. Joints The Joints Database is found on the Spec pull-down menu. The Joints Database allows you to define the characteristics of the joint connections used by the system. You can select Rectangular or Round/Oval Joints from the pull-down menu. Selecting one of these brings up the Rectangular or Round/Oval Joints dialog box (see Figure 7-5).

Figure 7-5

This dialog box allows you to change the Joint Name, Joint Allowance, Flange Size, and Gasket Size by selecting the proper entry. To change any of these joints, double click on one of them. To create a new joint, double click on a blank line. You can have 24 rectangular and 24 round/oval joints in your joint file at any time. When you double click on one of the joints or one a blank line, the Joint Edit dialog box appears (see Figure 7-6).

Figure 7-6

HVAC-71 Joint Name To change or add a joint name, select the Joint Name box and enter a new name. This name is available to use when you set up the joint defaults in the Rectangular Systems or Round/Oval Systems. The name can be 12 characters in length. Joint Allowance To set the Allowance for a joint, select the box and enter the number. Allowance is the amount of metal needed to form the joint. It is subtracted from both ends of the actual length of straight duct (see Figure 7-7).

2” Water Guage System Joint Allowance 1- 7/8”

Figure 7-7 1” Water Guage System Joint Allowance 1/2”

Flange Size The Flange Size defines the flange geometry used by CADPIPE HVAC while drawing the flange and checking for collisions. When Show Flange is activated in the Configuration Menu, the system draws a flange based on the Flange Size specified in the Joints Database (see Figure 7-8).

Flange 1 1/2”

Figure 7-8

HVAC-72 Gasket Size The Gasket Size defines the gasket allowance that the system uses when connecting duct and fittings. This number represents 1/2 of the actual gasket size. By defining a Gasket Size, you can be assured that the dimensions of duct runs on the drawing will be accurate. The system actually creates a gasket space between fittings and duct on your drawing to ensure the correct dimensions (see Figure 7-9).

Figure 7-9

Gasket size 1/4” System creates gasket space of 1/2”

Rectangular Systems-Round/Oval Systems Rectangular or Round/Oval Systems are selected from the Spec pull-down. The Rectangular or Round/Oval Systems menu selection allows you to set up and edit the systems available in the Configuration Menu. When you select Rectangular or Round/Oval Systems, a Systems dialogue box appears (see Figure 7-10).

Figure 7-10

This box lists all the systems available to you. You can have 24 Rectangular and 24 Round/Oval systems available. If you want to look at the specifications or edit a system, select the System by double clicking on it. If you want to set up a new system, double click on a blank line. The System Edit box appears with options available to edit the system (see Figure 7-11).

HVAC-73

Figure 7-11

System Name The System Name is the name that appears in the system listings in the Configuration Menu box. The name can be up to twelve characters in length. To edit or enter a new name, select the box and type the name. Material This database record is not used when fittings are drawn, but the information is used for the HVAC Reports. These are the Material types included with the CADPIPE HVAC software (see Figure 7-12). These default materials all have a weight factor associated with them so that the fitting weight can be reported in the HVAC Reports. To enter a new Material type double click on the Other... item and enter a new name in the Userdefined Material dialog box (see Figure 7-13). The new name can be up to twelve characters in length. The system uses this name in the HVAC Report, but does not calculate the weight of these fittings.

Figure 7-12

Figure 7-13

HVAC-74 Gauge/Length Select the Gauge/Length button to view or edit the size ranges for gauge and default lengths. For each system you can enter up to 20 records in the Gauge/Length list. These records are used by CADPIPE HVAC to determine the gauge of the metal used for a particular duct size. There is also a field for you to enter the length for default duct. CADPIPE HVAC uses this third field to determine the length for straight default duct based on the duct size. The size of the duct is defined by the cheek or wrapper, whichever is larger. When you select the Gauge/Length button, CADPIPE HVAC displays the Gauge/Length List dialog box (see Figure 7-14).

Figure 7-14

This Gauge/Length List box allows you to set up the gauge and default lengths specifications used in your shop for that System. If you want to edit a size range, double click on it and the Gauge/Length Edit dialogue box appears (see Figure 7-15).

Figure 7-15

Select the item you wish to edit, Size (up to), Gauge, or Def. Length, and enter a new value. Size (up to) governs a size range up to and including the specified size. When you select OK, the list is updated. If you want to create a new size range, select Add... at the bottom of the menu and enter the values you want. If you want to remove a size, highlight the value and select Delete.When you select OK to exit the Gauge/Length List box, the system updates your System Database. Joint Lookup Select the Joint Lookup button to view or edit the size ranges for joints. Each system can use different joint types depending on the size. The Joint Lookup option allows you to define the joint used for a particular size. Size dimension is based on cheek or wrapper, whichever is larger. When you select Joint Lookup, the Joint Lookup dialog box appears (see Figure 7-16).

HVAC-75

Figure 7-16

To edit the Joint Lookup database, double click on the joint name and a Joint Lookup Edit box appears (see Figure 7-17).

Figure 7-17

Select the Joint Name to edit, enter the Max Size, and then select OK to update the Joint Lookup database. The Joint Name must have been created in the Joints database before it shows up as a choice in the Joint Lookup Edit dialog box. Layer and Color Control Distinct layers and colors can be assigned to each system defined in the systems database. The system design, text, and tag numbers are automatically placed on the layers pre-selected for a given system and its associated text. To assign a layer and color to a system, select Rectangular Systems or Round/Oval Systems from the Spec pull-down menu. Select the system you want to edit. The System Edit dialog box appears (see Figure 7-11). The Layer Information area of the System Edit dialog box contains buttons which control layer and color assignments for the system you want to edit. Select the Duct/Fitting Layer button. The Duct/ Fitting Layer dialog box appears (see Figure 7-18).

Figure 7-18

Enter the desired layer name for this system. Pick the Select Color button and the AutoCAD Select Color dialog box appears, allowing you to assign a color. The Duct/Fitting Layer dialog now shows your selections for layer name and color. Confirm your selections by hitting OK.

HVAC-76 Before assigning layers and colors for Tag Layer, Text Layer 1, and Text Layer 2, you must decide which kinds of text will go on these three organizational layers. Exit System Edit by hitting OK at the System Edit dialog box and at the Systems dialog box. Select HVAC Text Layers from the CPTools pull-down menu. The HVAC Text Layer Types dialog box appears (see Figure 7-19).

Figure 7-19

Assign each type of text to one of the three organizational layers, then hit OK. Your assignment of text to these three layer types governs the organization of text on the actual text layers of all HVAC systems. In order to create actual layers for Tag Layer, Text Layer 1, and Text Layer 2 in a given system, select the appropriate button from the Layer Information area of the System Edit dialogue box. A Text Layer dialogue box appears for that text layer (see Figure 7-20). Enter a layer name and choose a color. You also have the option of using the System Layer (the layer you are using as the Duct/Fitting Layer for that system).

Figure 7-20

To create a lining layer and/or an insulation layer, click the Lining Layer and Insulation Layer buttons and use the same procedure.

HVAC-77 Vanes/Seams Vanes and Seams are selected from the Spec pull-down. After selecting Vanes/Seams from the menu, the Vanes and Seams dialog box appears (see Figure 7-21). This dialog box allows you to set up and edit Vane Descriptions, Seam Styles/Descriptions, and Seam Configurations for Rectangular, Round, and Oval duct.

Figure 7-21

Vane Descriptions To Edit the Vane Description, double-click on a Vane Description in the Vanes and Seams dialog. This brings up a Vane Edit dialog allowing you to modify the Vane Name (see Figure 7-22).

Figure 7-22

Type in your new name and click the OK button. To add a new Vane Description, double-click on an empty spot in the Vane Descriptions list. This brings up a Vane Edit dialog allowing you to add a new Vane Name.

HVAC-78 Seam/Styles Descriptions To Edit a Seam Description, double-click on a Seam Description in the Vanes and Seams dialog. This brings up a Seam Edit dialog allowing you to modify the Seam Name (see Figure 7-23). Type in your new name and click the OK button.

Figure 7-23

To add a new Seam Description, double-click on an empty spot in the Seam Descriptions list. This brings up a Seam Edit dialog allowing you to add a new Seam Name. Seam Configurations To set up Seam Configurations press one of the Seam Configuration buttons in the Vanes and Seams dialog box. This will bring up a Seam Configuration Settings dialog allowing you to set up your Seam Configurations (see Figure 7-24).

Figure 7-24

HVAC-79 Fabricatoin/Purchase Settings The Fab/Purchase Settings function on the Spec menu allows you to edit the fabrication settings for duct and fittings on your drawing. When you select this command from the menu, the Fabrication/Purchase Setup dialog box appears (see Figure 7-25). This dialog box allows you to edit the fabrication/ purchase settings for each fitting.

Figure 7-25

Lining Descriptions The Lining Descriptions function on the Spec menu allows you to add, re-order, and delete Lining Descriptions. When you select this command from the menu, the Lining Descriptions dialog box appears (see Figure 7-26). To add Lining Descriptions, simply type a description in the field labled Description and click the Add button.

Figure 7-26

HVAC-80 Wrapper/Insulation Descriptions The Wrapper/Insulations Descriptions function on the Spec menu allows you to add, re-order, and delete Wrapper Descriptions. When you select this command from the menu, the Wrapper Descriptions dialog box appears (see Figure 7-27). To add Wrapper Descriptions, simply type a description in the field labled Description and click the Add button.

Figure 7-27

Reinforcing Descriptions The Reinforcing Descriptions function on the Spec menu allows you to edit the Reinforcing Descriptions on your drawing. When you select this command from the menu, the Reinforcing Descriptions dialog box appears (see Figure 7-28). Here you can add and edit the Angle and Rod Descriptions.

HVAC-81

Backup and Restore Databases Backup To backup your database files select Backup from the Spec pull-down menu.A Browse for Folder dialog box appears (see Figure 7-29).

Figure 7-29

Select the drive or folder where you would like CADPIPE to place the backed-up files and select OK. The system displays on the command line that the files are being backed up. An AutoCAD Alert dialog box appears indicating when the backup is completed successfully (see Figure 7-30).

Figure 7-30

HVAC-82 Restore To restore your database files select Restore from the Spec pull-down. A Broswe for Folder dialog box appears (see Figure 7-31).

Figure 7-31

Select the drive or folder that contains the files for your backup and select OK. The system displays on the command line that the files are being restored. An AutoCAD Alert dialog box appears indicating when the restore is completed successfully (see Figure 7-32).

Figure 7-32

Specification Database Names The following is a list of the database file names found in your HVAC directory. If you wish to backup or restore individual databases, use Windows Explorer to copy whichever files are needed. HVACDIM1 = Rectangular fittings dimensional database HVACDIM2 = Round/Oval fittings dimensional database HVACFPF1 = Rectangular Systems Specification database HVACFPF2 = Round/Oval System Specification database HVACJNTS = Rectangular and Round/Oval Joints database HVACMISC = Default Length database BEAMHVAC = Beam database

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CHAPTER 8. ACCESSORIES The HVAC Accessory function is used to create and insert accessories (dampers, access doors, diffusers, grilles, registers, or louvers) into your drawing. These items are generated from parameters you set including size, elevation, and description. In addition, you can generate and print a detailed bill of materials report of all accessories, sorted by size, area, or system. To insert an accessory item, select Accs from the pull-down menu. A list of the available items appears on the menu. You may select an item from the list or select Icon Menu... from the bottom of the list to bring up an icon menu of all available accessory items (see Figure 8-1).

Figure 8-1

Database Setup The C.F.M. Database is a user-definable database that assists the sizing of diffusers for your HVAC designs. You can set up any number of C.F.M. Databases by client, job, or type of construction. When these databases are used, it is easy to size the diffusers according to your specifications for any type of job. The database consists of a range of C.F.M. sizes and corresponding diffuser neck sizes. When you set a C.F.M. value, the system searches the database and then selects the neck size for that range. Creating and Modifying C.F.M. Databases To set up a C.F.M. Database, you must choose the C.F.M Database option from the Accs pulldown menu or HVAC Accessories icon box. When you select C.F.M. Database from the menu, the C.F.M. Database Manipulation dialog box appears (see Figure 8-2).

HVAC-84

Figure 8-2

This dialog box displays the options Modify C.F.M. Database or Create C.F.M. Database. When you select Modify C.F.M. Database, a standard AutoCAD dialog box appears listing all existing C.F.M. databases in the directory (see Figure 8-3). This same box appears after selecting Create C.F.M. Database and allows you to enter a new database name.

Figure 8-3

When you choose an existing file, the database values are displayed in the C.F.M. Database dialog box (see Figure 8-4).

Figure 8-4

HVAC-85 To change or input a new value, double click on a database record. The C.F.M. Database Record dialog box appears, allowing you to change the values for Neck Length, Neck Width, C.F.M. Low, C.F.M. High, and Round Size (see Figure 8-5).

Figure 8-5

This same box appears if you select Create C.F.M. Database. Type in a new file name and hit Enter. Select Add.... When you finish changing or inputting new values, you can save the data by selecting Save or give the file a new name by selecting the Save as option. The system can create and store as many database files as you wish.

Rectangular, Round and Linear Diffusers The CADPIPE HVAC Accessory function has the ability to draw different types of air devices for use in your HVAC design. These include rectangular diffusers with rectangular or round necks, round diffusers, linear diffusers, grilles, registers, and louvers. The Rct. Diffuser/Rct.Neck, Rct. Diffuser/Rnd Neck, Rnd Diffuser, or Linear Diffuser, can be selected from the Accs pull-down menu or by double clicking on the text or picture on the HVAC Accessories icon menu. When you select one of these, the diffuser edit box appears (see Figure 8-6). This box allows you to set the physical dimensions and properties for the diffuser. The following is a description of each of the options available. Figure 8-6

HVAC-86

Sizing Diffusers Use C.F.M. to Size Diffuser Activating this toggle instructs CADPIPE HVAC to determine the neck size of the diffuser from the value entered in the C.F.M. box. The system allows you to specify which C.F.M Database you want to use for sizing diffusers. The system finds the C.F.M. size range and selects the corresponding neck size to draw the correct diffuser. When the C.F.M. Database box is not activated, the system uses the dimensions entered in the Neck Length, Neck Width, or Neck Diameter field to determine the diffuser’s neck size. Note: You must have defined a C.F.M. Database in order to use this option (see Creating C.F.M. Database, this chapter).

C.F.M. Database... This button displays the active C.F.M. Database. If you want a new database for sizing diffusers, press the button and select a new database from the list displayed in the Select C.F.M. Database to Use dialog box. C.F.M. This edit box specifies the desired C.F.M. performance for the diffuser. This box is only used if the Use C.F.M. to Size Diffuser box is active.

Diffuser Dimensions Neck Length and Neck Width These dimensions determine the rectangular neck size of the diffuser. If you have selected a round neck diffuser, the box is labeled Neck Diameter (see Figure 8-7). To enter a value, select the box and type in a new value.

Figure 8-7

HVAC-87 Elevation This value specifies the distance from the floor to the diffuser. This distance is measured to the bottom of the diffuser. Note: Elevation is always measured from the AutoCAD zero Z coordinate.

Angle This option allows you to rotate the diffuser by a specified angle when it is placed. The angle is a rotation about the Z axis. Length, Width and Height These dimensions control the actual physical size of the diffuser. The system retains any value entered in these boxes until it is changed. (see Figure 8-8).

Figure 8-8

Supply/Return This option allows you to specify whether the diffuser is used as a supply or return device. This setting does not affect how the diffuser appears on the drawing. It lists this information when you generate a diffuser report. Contains Damper Switching this toggle on causes CADPIPE HVAC to note in the bill of materials report that this diffuser contains a damper. Horizontal Placement This toggle determines whether your diffuser is placed horizontally or vertically.

Text Options Text This box allows you to enter a text string to be placed on the drawing with the diffuser. Default text placed with diffusers is Neck along with the neck dimension (see Figure 8-9).

HVAC-88

Figure 8-9

To change this text type a new text string into the field. The text display is controlled from the Text Options section of the HVAC Accessory Configuration dialog box (see Figure 8-10). To configure accessory text, select Configure from the Accs pull-down menu or from the HVAC Accessories icon menu. This dialog box allows you to control whether text associated with accessories is created and to change the Text Size and Text Style.

Figure 8-10

Comment This field allows you to associate text (15 characters maximum) unique to that diffuser. The comment is included in the bill of materials report for air devices. System This field allows you to associate a system name or number with the diffuser. When you define a system name you are able to sort your air device report by system (see Chapter 9– CADPIPE Reports). Area In this field you can associate an area or room number with the diffuser. When you define an area, you are able to sort your air device report by area (see Chapter 9– CADPIPE Reports). To place a diffuser, select OK and the following system prompt appears. Pick location for diffuser:

Select the location (lower left corner of diffuser) and press Enter. You can continue to place diffusers until you hit Enter.

HVAC-89 Grilles, Registers, and Louvers These air devices work in much the same way as diffusers. The major difference is that their width dimension is measured in the vertical, like a Linear Diffuser, rather than the horizontal like other diffusers. When you select the Grille or Register from the pull-down menu or the HVAC Accessory icon menu, an HVAC Accessories dialog box appears (see Figure 8-11). This box allows you to set the parameters to draw your grille or register.

Figure 8-11

C.F.M. The C.F.M. box allows you to specify a C.F.M. value for the Grille or Register. Unlike the diffuser, grilles and registers can not be sized using the C.F.M. value. This value is only used for drawing annotation and reporting purposes. When a value is typed here and Accessory Text Display is toggled on, the text appears on the drawing with the grille or register. This C.F.M. option is not available when you select Louver.

Grille, Register and Louver Dimensions Length, Width and Thickness These dimensions control the actual physical size of the Accessory. The system retains any value entered in these boxes until it is changed (see Figure 8-12).

HVAC-90

Figure 8-12

Elevation This value specifies the distance from the floor for placement of the grille, register, or louver. This distance is measured to the bottom of the grille, register, or louver. Note: The grille and register have a 1" flange around them. The elevation dimension is to the bottom of the grille or register and not the bottom of flange (see Figure 8-13).

To place a grille, register, or louver, select OK and the following system prompt appears. Pick location for grille:

Select the location (lower left corner of item) and press Enter. You can continue to place these devices until you hit Enter.

Figure 8-13

HVAC-91 Angle This allows you to rotate the grille, register, or louver by a specified angle as you place it. The angle is a rotation about the Z axis.

Text Options Comment This field allows you to associate text (15 characters maximum) unique to that grille, register, or louver. This comment is included in the bill of materials report for air devices. System This field allows you to associate a system name or number with the grille, register, or louver. When you define a system name you are able to sort your air device report by system (see Chapter 9– CADPIPE Reports). Area In this field you can associate an area or room number with the grille, register, or louver. When you define an area you are able to sort your air device report by area (see Chapter 9– CADPIPE Reports). Supply/Return This toggle allows you to specify wheter the grille, register, or louver is used as a supply or return device. This information is included when you generate an accessory report.

Flex Duct/Spin Collar CADPIPE HVAC allows you to automatically connect a spin collar and flex duct to a diffuser or other object. Select Flex Duct/Spin Collar... from the pull-down menu or HVAC Accessories icon menu. The Flex Duct/Spin Collar dialog box appears (see Figure 8-14). This menu allows you to set the parameters governing the placement of the spin collar and flex duct.

Figure 8-14

HVAC-92 To place the Flex Duct/Spin Collar, follow the system prompts. First select the duct, and then select the diffuser. You can conitnue to place flex and spin collars until you exit by hitting Enter. Only Draw Flex Duct This toggle controls the placement of a spin collar with flex. When this toggle is deactivated, a spin collar is automatically placed with the flex. Activate this toggle if you want to place flex duct from the end of a round fitting or pipe (see Figure 8-15). You must first Join to the opening from which you wish to draw flex.

Figure 8-15

Spin Collar Diameter This option defines the diameter of the spin collar. Spin Collar Length This option defines the length of the spin collar. Maximum Flex Length This option defines the maximum length of flex CADPIPE HVAC uses. The length of flex is determined by adding the horizontal distance from the duct to the diffuser to the elevation difference between the duct and the diffuser. If this distance exceeds the Maximum Flex Length setting, CADPIPE HVAC adds round straight pipe to the spin collar to make up the difference. An AutoCAD alert box appears when this occurs (see Figure 8-16).

Figure 8-16

HVAC-93 When you select OK, the system places the spin collar, the length of round pipe, and the flex (see Figure 8-17). This round pipe is listed in the Spin Collar Report.

Figure 8-17

Minimum Pipe Length This option allows you to specify a minimum length for the pipe added to the spin collar. When the maximum flex length is exceeded and the added pipe length is less than this minimum, CADPIPE HVAC extends the flex beyond the maximum to fit instead of placing a short piece of pipe. Graphic Representation This toggle determines how the spin collar and flex duct is displayed on the drawing. Selecting Single Line shows the spin collar and flex duct as a single line, whereas Solid shows the spin collar and flex duct as solids (see Figure 8-18).

Figure 8-18

Placement on Duct This determines where the spin collar is placed on the duct. Selecting Side places the spin collar on the side where the duct was picked. To place the spin collar on the bottom, select Bottom (see Figure 819).

HVAC-94

Figure 8-19

Volume Damper and Scoop Turning on these toggles places a volume damper and scoop in the spin collar. This information is reported in the Spin Collar Report.

Fire Damper The CADPIPE Accessory function provides a wide range of dampers and other items needed for your HVAC drawings. These dampers insert into the duct and are automatically sized. The Fire Damper, unlike other dampers, is placed as you draw your duct. The CADPIPE Fire Damper can be placed either like a fitting or auto-routed to a wall. In the auto-route mode, the system computes the amount of straight duct needed to connect to the fire damper sleeve. Placing Fire Damper The Fire Damper is found on the Accs pull-down menu or on the HVAC Accessory icon menu. When you select Fire Damper, the Placement Options dialog box appears (see Figure 8-20).

Figure 8-20

HVAC-95 This dialog lists the two options for placing the Fire Damper. When you select Place, the Fire Damper dialog box appears (see Figure 8-21). The Fire Damper dialog box allows you to set the specifications and select the options for the damper.

Figure 8-21

Fire Damper Dimensions Cheek and Wrapper The Cheek and Wrapper dimensions must correspond to the dimensions of the duct into which the Fire Damper is placed. This dimension is set automatically when currently joined to a run. Inlet/Outlet Collar Length CADPIPE draws the fire damper with a damper sleeve. The Collar Length determines the amount of sleeve extending from the damper (see Figure 8-22).

Figure 8-22

HVAC-96 Wall Thickness Because the fire damper is set into a wall, the wall dimension determines the thickness the fire damper. If the wall is 8", the fire damper itself will be drawn at 8". The Collar Length is added to the Thickness dimension for the overall dimension of the damper and sleeve. The Wall Thickness dimension entered will remain the default until it is changed. If you select Place Damper, be sure to enter the correct Wall Thickness. Use Separate Sleeve This toggle places a sleeve inside the fire damper. The sleeve is reported in the Accessory Reports. Combo Smoke/Fire Damper This toggle places the fire damper as a combination Smoke/Fire Damper.

Type of Fire Damper Class The Class is the type of Fire Damper you choose to use. These buttons, A, B, and C, have no bearing on how the damper appears on the screen but are reported in the Accessory Report for Dampers. If HVAC Accessory Text Display is toggled on, the letter indicating class appears on the drawing. Mounting The Horizontal and Vertical mounting selection is also reported in the Accessory Reports for Dampers.

Fire Damper Text Options Comment This box allows you to associate text (15 characters maximum) unique to that fire damper. This comment is included in the bill of materials report for dampers. System This box allows you to associate a system name or number with the fire damper. When you define a system name you are able to sort your Damper report by system (see Chapter 9– CADPIPE Reports). Area In this box, you can associate an area or room number with the fire damper. When you define an area, you are able to sort your damper report by area (see Chapter 9– CADPIPE Reports). When all parameters for the fire damper are set, select OK, and the system places the damper. Auto-Route Fire Damper When you select Fire Damper, the second option on the Placement Option dialog box is Route to Wall. This option automatically sizes and auto-routes the fire damper and duct into the wall. When you select Route to Wall, the system prompts as follows. Select a wall to route to:

HVAC-97 By selecting the wall, the system automatically sets the Wall Thickness on the Fire Damper dialog box to the correct dimension. After you select the wall, the Fire Damper dialog box appears. When it appears, the dimensions for Cheek, Wrapper, and Wall Thickness are already set. You can change the Collar Length, select the Class and Mounting, and enter any Comment, System, or Area text you want associated with the fire damper. When you select OK, the system places the fire damper in the wall and adds any amount of straight duct needed to connect the duct and the damper (see Figure 8-23). At this point, you can continue selecting duct or fittings. Note: The wall you select to size the Fire Damper must be a wall drawn using the CADPIPE Architectural Walls function.

Figure 8-23

If the distance to the wall is greater than the Default Length duct for the System you are drawing, the Route to Wall function places the needed Default Lengths and any Cut to Length pieces needed to connect to the fire damper.

Other Dampers and Items The HVAC Accessory function allows the placement of other types of dampers. These include Smoke, Backdraft, Volume, and Motor dampers, as well as an Electric Duct Heater and Hot Water Coil. All of these items are placed in the same way and are sized automatically. To place one of these items, select it from the Accs pull-down or HVAC Accessory icon menu. The HVAC Accessory dialog box for other dampers and items appears (see Figure 8-24).

Figure 8-24

HVAC-98 This dialog box allows you to set the Damper Width and entity data to be reported for that damper. The system automatically sizes the damper, with the exception of the width, when you select the duct or fitting in which to place it. Comment This field allows you to associate text (15 characters maximum) unique to that damper. This comment is included in the bill of materials report for dampers. System This field allows you to associate a system name or number with the damper. When you define a system name, you are able to sort your damper report by system (see Chapter 9– CADPIPE Reports). Area In this field, you can associate an area or room number with the damper. When you define an area you are able to sort your damper report by area (see Chapter 9– CADPIPE Reports). When the parameters for the dampers are set, select OK. Select a duct:

Pick a straight duct in which to place the damper. The system automatically sizes and places the damper, centered on the pick point. The label text associated with the damper is placed on the side of the duct at the point that was picked (see Figure 8-25). To quit placing dampers press Enter. Note: Dampers and other accessory items can only be placed in straight duct or round pipe.

Figure 8-25

Access Doors The HVAC Accessory function also allows the placement of Access Doors on your ductwork. You can select the Access Door from the Accs pull-down menu or HVAC Accessory icon menu. When you select Access Door an HVAC Accessory dialog box appears (see Figure 8-26).

HVAC-99

Figure 8-26

This dialog box allows you to size, select the type, and assign associated text to the Access Door. Length and Width These dimensions are the physical size of the Access Door. If you select Round, the system uses the Length dimension for the diameter. Rectangular or Round These selections determine if the Access Door is drawn as a rectangular or round. Side, Top or Bottom These selections determine where the Access Door is placed on the duct. Insulated This is an informational toggle only. When activated, the Access Door is reported in the Access Door Report as being insulated. Comment This field allows you to associate text (15 characters maximum) unique to that access door. This comment is included in the bill of materials report for access doors. System This field allows you to associate a system name or number with the access door. When you define a system name, you are able to sort your access door report by system (see Chapter 9– CADPIPE Reports).

HVAC-100 Area In this field, you can associate an area or room number with the access door. When you define an area, you are able to sort your access door report by area (see Chapter 9– CADPIPE Reports).

VAV Boxes and Fan Units CADPIPE HVAC allows you to create VAV boxes and fan units automatically. You can then use these items in your designs, attaching rectangular, round, or flex duct to them. These items are found on the Accs pull-down or the HVAC Accessory Icon Menu. Creating a VAV Box When you select VAV Box from the Accs pull-down or Icon Menu, an HVAC Accessories dialog box appears (see Figure 8-27). This dialog box allows you to set the size, elevation, inlet/outlet information, and any report text associated with the VAV Box.

Figure 8-27

Dimensions Length, Width and Height These dimensions control the actual physical dimensions of the VAV box. The system retains any value entered here until they are changed (see Figure 8-28).

HVAC-101

Figure 8-28

Angle This setting allows you to rotate the VAV box by a specified angle as you place it. Elevation The elevation of the VAV box can be referenced from the Top or Bottom of the VAV box. Select the option desired and click on the button. To change the Elevation value, select the text in the box and enter a new value. The entered value remains until it is changed.

Report Information Text This field allows you to enter a text string that will be placed on the drawing with the VAV box. If you want to change this text, select it and type a new text string. Comment This field allows you to associate a unique text string (15 characters maximum) with a specific VAV box. The comment is included in the bill of materials report for air devices. System This field allows you to associate a system name or number with the VAV box. When you define a system name you are able to sort your air device report by system (see Chapter 9– CADPIPE Reports). Area In this field you can associate an area or room number with the VAV box. When you define an area you are able to sort your air device report by area (see Chapter 9– CADPIPE Reports). Inlet/Outlet Information The CADPIPE HVAC VAV Box accessory function allows you to place an inlet or an outlet on the four sides of the VAV box. These inlets and outlets can be rectangular or round and can be offset from the center of the side toward the top or bottom or to the right or left. To set the inlets and outlets for the VAV box, activate any of the side boxes and then select the Side bar. When you select a Side, the Side # Inlet/ Outlet dialog box appears (see Figure 8-29).

HVAC-102

Figure 8-29

Inlet/Outlet Dimensions Cheek and Wrapper These dimensions correspond to the duct size attached to the VAV box. If you have selected Round for Inlet/Outlet Shape, the selection Diameter appears. Length This is the amount of throat drawn for the Inlet or Outlet. Side Offset This dimension determines the offset for the inlet or outlet in a right or left direction from the center of the side. To offset the inlet or outlet to the right, enter a positive number in the box. To offset it to the left, enter a negative number in the box. Elevation Offset This dimension determines the offset for the inlet or outlet in an up or down direction from the center of the side. To offset the inlet or outlet toward the top, enter a positive value in the box. To offset the inlet or offset toward the bottom, enter a negative value in the box. Placing a VAV Box Once you have provided the information for the VAV box and have selected OK, the following system prompt appears. Pick location for VAV Box:

Select the location (lower left corner of VAV box) and press Enter. You can continue to place VAV boxes until you hit Enter.

HVAC-103 Once you have placed a VAV box, you can use Join to a run to select an inlet or outlet on the VAV box and then select a fitting from the menu. The system automatically sizes the fitting according to the size of the inlet or outlet and attaches it to the VAV box. You can also attach flex duct to any round inlet of a VAV box. Fan Unit The Fan Unit selection on the accessory menu works the same as VAV Box. The only difference is that the Fan Unit function allows you to place an inlet or outlet on the top or bottom of the unit.

Configure Accessory When you select Configure. . . from the Accs menu or HVAC Accessories dialog, the CADPIPE Configure Accessory box appears (see Figure 8-30). This dialog allows you to set up your Accessory Layers, Accessory Text, and Tootip Query information. The Configure Accessory Text/Layers tab is the default selection.

Figure 8-30

Accessory Layers The Layer Control Options field lists the current Accessory Layers and their settings. To edit a layer, select it from the list. You can now perform one of three options: toggle Use System Layer, Rename the Layer, and Select a new color. The Use System Layer Toggle tells CADPIPE to use the system defaults (Name and Color) for that layer. The Layer Name: field allows you to edit the layer name. Simply type a new name and click the Save Changes button. The Select Color. . . button allows you to change the layer color. Press the button and choose a new color from the AutoCAD Select Color Dialog.

HVAC-104 Accessory Text Accessory text display is controlled via the Text Options section. The Display Accessory Text toggle controls whether text associated with accessories is placed on your drawing. The Text Size (MSPACE) and Text Size (PSPACE) fields allow you to set the size of Accessory text in Model and Paper Space. The Text Style menu allows you to set the style of text used. Tooltip Query To set up your Tooltip Query, select the Tooltip Query tab on the Configure Accessory dialog. The Tooltip Query tab contains two main sections labeled Available Tip Info and Tip Info to Display along with several buttons and toggles to set up the tooltip query function (see Figure 8-31).

Figure 8-31

Available Tip Info The Available Tip Info field lists the available information that can be displayed when your cursor hovers over a CADPIPE Item. Use the arrow buttons or double click items to add or remove tip info. Tip Info to Display The Tip Info to Display field lists the tooltip information that will be displayed when your cursor hovers over a CADPIPE Item.

HVAC-105 Show Dynamic Tooltip Query The Show Dynamic Tooltip toggle turns the Tip Info Display off and on. With the Show Dynamic Tooltip toggle selected, CADPIPE displays the Tip Info. With the Show Dynamic Tooltip toggle unchecked, CADPIPE will not display the Tip Info. Label Each Tip The Label Each Tip toggle determines if the Tip Info Names are displayed along with the Tip Info. With the Label Each Tip toggle selected, CADPIPE displays the Tip Info Names and Tip Info. With the Label Each Tip toggle unchecked, CADPIPE displays just the Tip Info.

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CHAPTER 9. REPORTS The CADPIPE HVAC system can generate reports detailing the duct, fittings, and HVAC accessories on your drawings. These reports are useful for shipping, estimating, and ordering equipment.

Duct and Fittings Reports Duct and Fitting reports are automatically generated from the drawing and contain important information for shipping and estimating a job. The report includes the following: quantity, tag number, size of entrance opening, length (for straights), area in square feet, and weight.

HVAC Reports HVAC Reports are found in the CPTools pull-down menu or the Design/Utilities toolbar. When you select HVAC Reports from the menu, a Shipping Report dialog box appears. Options for the Report Kind (rectangular, round, spiral, or All) and the Report Type (Straight, Cut-to-Length, Fittings, ALL, or Duct Runs) are available. You also have eleven Report Output options (Display, Clipboard, Printer, ASCII, CSV, CSV/Fabrication, Access Db, Access Db/Fabrication, Vulcan Cutting Table, and Vicon Cutting Table). To activate the Fabrication and Cutting Table options, you must purchase the separate Fabrication/Cutting Table add-on. The Job Description can be a number or title and appears on the report (see Figure 9-1).

Figure 9-1

Note: Only duct or fittings on active layers (layers turned on) are reported. With this feature, you can turn layers on or off to report only selective duct systems.

After specifying your Report Kind, Report Type, and Report Output CADPIPE produces a report based on your selections.

HVAC-107 The Display output option brings up a dialog box conatining the report information (see Figure 9-2).

Figure 9-2

The Print output option sends the file to your printer. The ASCII, CSV, and Access Database options all save the report to a file. When one of these options is selected, the Save Report to a File dialog box appears. The file extension corresponds to the file type select under the Report Output options on the Shipping Report dialog box.

Accessory Report The Accessory Report creates an automatic bill of materials of all accessory items used on the drawing. When you select Accessories Report from the menu you have the choice of eight types of reports: Air Device (diffusers, grilles, registers, and louvers), Damper, Access Door, Heater/Coil (electric duct heater, hot water coil), Flex Duct, Spin Collar, Custom InLine Fitting, and All Accessory Items. You can also select a Sort Type (System, Area, Total Report) and Report Output option (Display, Clipboard, Printer, ASCII, CSV, and Access Database). To activate the Fabrication options, you must purchase and intsall the Fabrication package. The Job Description can be a number or title and appears on the report (see Figure 9-3).

HVAC-108

Figure 9-3 Note: To sort by system or area, the system or area must have been identified when the device was placed. If this did not happen, the system defaults to Total Report.

After specifying your Report Kind, Report Type, and Report Output CADPIPE produces a report based on your selections. The Display output option brings up a dialog box containing the report information (see Figure 9-4).

Figure 9-4

HVAC-109 The Printer output option sends the file to your printer. The ASCII, CSV, and Access Database options all save the report to a file. When one of these options is selectd, the Save Report to a File dialog box appears. The Flex Unit Length is a value representing the length of the rolls or cartons of flex duct that you purchase from your supplier. When you enter a value here, the system gives a total length of flex duct by size, and reports the number of rolls or cartons of the size needed (see Figure 9-5).

Figure 9-5

HVAC-110

CHAPTER 10. SECTION VIEWS The CADPIPE HVAC Drawing Sheets menu Contains commands associated with creating Drawing Sheets, Layouts, and Sections.

Sheet Layout CADPIPE provides direct access to some AutoCAD tools to help you set up layout sheets. The Sheet Layout sub-menu on the Drawing Sheets pull-down has four options for creating sheet layouts: New Layout, New Layout with Wizard, Model Space Viewport(s), and Manual Setup.

New Layout The New Layout menu option creates a new layout tab. The following message appears at the command prompt. Enter new Layout name :

Press Enter to use the name AutoCAD automatically assigns (inside the brackets on the command line), or type a new name and then press Enter. The new layout sheet is created.

New Layout with Wizard The New Layout with Wizard menu option brings up the AutoCAD Create Layout dialog box (see Figure 10-1). This dialog box contains a series of steps, taking you through the process of creating a new layout. You can choose to create a new layout from scratch or use an existing layout template as a base for your new layout. CADPIPE provides several example title block templates listed in the Create Layout dialog box.

Figure 10-1

HVAC-111 Depending on which plotting device is currently configured, you can select a paper size from those available. You can select a predefined title block from a list and apply it to the new layout you are creating. The preview area displays a preview image of the title block you select. When finished using the wizard to specify your layout settings, you can modify any of the settings using the Page Setup dialogue box from within the new layout.

Model Space Viewport(s) The Model Space Viewport(s) menu option brings up the AutoCAD Viewports dialog box (see Figure 10-2).

Figure 10-2

This dialog box enables you to create and modify your model space viewports. Please refer to your AutoCAD documentation and/or help files for more information on using this dialog box.

Manual Setup The Manual Setup menu option enables you to manually set up drawing sheets. When selected, it runs the AutoCAD MVSETUP command and displays the following prompt on the command line. Enable paper space? [No/Yes] :

Selecting yes will create a new layout sheet and display the next prompt containing all the nessecary options for you to create a new layout sheet.

HVAC-112 Enter an option [Align/Create/Scale viewports/Options/Title block/Undo]:

Please refer to your AutoCAD manual and/or help files for more information on creating layout sheets with these commands.

Section/Floor Plan Views. . . The Section/Floor Plan Views. . . sub-menu on the Drawing Sheets pull-down contains two options for setting up and generating sections and plan views. They are: Setup/Generate and Generate.

Setup/Generate The Setup/Generate menu option displays the Section / Floor Plan Views -- Setup dialog box. From this dialog box you can setup and generate multiple section views and floor plan views

Section Selecting the Section toggle in the Section / Floor Plan Views -- Setup dialog box activates the Section View options (see Figure 10-3).

Figure 10-3

HVAC-113 Section Number This field allows you to create customized names/numbers for your section views. Type the name/ number you wish to assign to the section. The text in this field appears on the section marks. Text Size This field allows you to set the text size of the section marks that appear in your view. Text Style This option allows you to set the text style of the section marks you are placing. Ref. Drawing This field allows you to name a reference drawing for your section view. Section Arrow Style Allows you to choose the arrow style for the section marks that appear on your drawing (see Figure 10-4).

Figure 10-4 basic section arrows

standard section arrows

Section View From Allows you to pick the direction you want to view the section from. Digitize Area This button allows you to digitize the area of the drawing that makes up your section view. CADPIPE automatically returns to the drawing and prompts you to select a first and second point for the section area. Generate View While setting your section view parameters, this button is greyed out. It becomes active once they are set, and you can use it to instantly generate your Setion View. CADPIPE prompts you to select the viewport in which the view appears. Creating Multiple Views CADPIPE gives you the ability to set up multiple section views from this dialogue box. To do this, set all neccessary parameters for your first section view. Then click the OK button and CADPIPE clears the previous settings, allowing you to create another section view. Once you have created all section views needed, they can be generated and accessed from the Section / Floor Plan Views -- Generate View dialog box (see Figure 10-6).

HVAC-114

Floor Plan Selecting the Floor Plan toggle in the Section / Floor Plan Views -- Setup dialog box activates the Floor Plan options (see Figure 10-5).

Figure 10-5

Floor Plan Description This field allows you to set a name for the floor plan. This description will be listed in the Section / Floor Plan Views -- Generate View dialog box. Upper Elev This field allows you to enter the upper elevation for the floor plan clipping planes. Lower Elev This field allows you to enter the lower elevation for the floor plan clipping planes. Digitize Elevations. . . This button allows you to digitize points on the drawing to indicate the upper and lower elvations the floor plan clipping planes.

HVAC-115 Generate View While setting your Floor Plan parameters, this button is greyed out. It becomes active once they are set and you can use it to instantly generate your Floor Plan. CADPIPE prompts you to select the viewport in which the view appears. Creating Multiple Floor Plans CADPIPE gives you the ability to set up multiple plan views using this dialog box. To do this, set all neccessary parameters for your first Floor Plan. Then click the OK button and CADPIPE clears the previous settings allowing you to create another Floor Plan. Once you have created all plan views needed, they can be generated and accessed from the Section / Floor Plan Views -- Generate View dialog box (see Figure 10-6).

Generate The Generate menu option brings up the Section / Floor Plan Views -- Generate dialog box (see Figure 10-6). This dialog box displays a list of Section Views and Floor Plan views. If you have not set up any views before selecting this option, the dialog box appears empty.

Figure 10-6

Section The Section toggle activates the Select Section View list allowing you to choose which section view you would like to generate. Simply highlight your chosen view and click the Generate View. . . button. CADPIPE prompts you to select a viewport to place the view. Digitize the viewport for the section view: Note: You should set up all your layout sheets and viewports prior to generating the section views..

Floor Plan The Floor Plan toggle activates the Select Floor Plan View list allowing you to choose which floor plan view you would like to generate. Simply highlight your chosen view and click the Generate View. . . button. CADPIPE prompts you to select a viewport to place the view. Digitize the viewport for the section view: Note: You should set up all your layout sheets and viewports prior to generating the floor plan views.

HVAC-116 Delete View. . . The Delete View. . . button allows you to select either a section or floor plan view (depending on which list is active) and delete it. Highlight the view you wish to delete, click the Delete View. . . button, and the selected view will be removed from the list.

Clear Clipping Planes The Clear Clipping Planes command is located on the Drawing Sheets pull-down menu. This menu option removes all clipping planes set during the setup of section and/or floor plan views.

Settings The Settings sub-menu on the Drawing Sheets pull-down provides access to several AutoCAD commands to aid in the annotation of your section view drawings.

Dimension Styles The Dimension Styles menu option brings up the AutoCAD Dimension Style Manager dialog box (see Figure 10-7). This dialog box enables you to manage and customize the deminsion styles you are placing on your drawings. Please refer to the DIMSTYLE section of your AutoCAD manual or help files for detailed descriptions on the use of this dialog box.

Figure 10-7

DIMSCALE The DIMSCALE menu option sets the overall scale factor applied to dimensioning variables that specify sizes, distances, or offsets. The following prompt appears on the command line. Enter new value for DIMSCALE :

HVAC-117 DIMTXSTY The DIMTXSTY menu option specifies the text style of the dimension. The following prompt appears on the command line. Enter new value for DIMTXSTY :

DIMASZ The DIMASZ menu option controls the size of dimension line and leader line arrowheads. It also controls the size of hook lines. Enter new value for DIMASZ :

DIMTXT The DIMTXT menu option specifies the height of dimension text, unless the current text style has a fixed height. Enter new value for DIMTXT :

Symbols The Symbols sub-menu on the Drawing Sheets pull-down provides access to several AutoCAD commands enabling you to add various symbols to your section view drawings.

North Arrow The North Arrow menu option allows you to place a north arrow on your drawing. Once selected, the following options appear on the command line. Specify insertion point or [Scale/X/Y/Z/Rotate/PScale/PX/PY/PZ/PRotate]:

From here you can either select the insertion point or enter an option. Scale Sets the scale factor for the X, Y, and Z axes. The scale for the Z axis is the absolute value of the specified scale factor. X/Y/Z X sets the X scale factor, Y sets the Y scale factor, and Z sets the Z scale factor. Rotate Sets the angle of insertion for the North Arrow. PScale Sets the scale factor for the X, Y, and Z axes to control the display of the block as it is dragged into position.

HVAC-118 PX/PY/PZ PX sets the scale factor for the X axis to control the display of the north arrow as it is dragged into position. PY sets the scale factor for the Y axis to control the display of the north arrow as it is dragged into position. PZ sets the scale factor for the Z axis to control the display of the north arrow as it is dragged into position. PRotate Sets the rotation angle of the north arrow as it is dragged into position.

Revision Cloud The Revision Cloud menu option allows you to place a revision cloud on your drawing. The following appears on the command line. Digitize Start Point of Revision Cloud [eXit/Options] :

Flow Arrow, Small The Flow Arrow, Small menu option allows you to place a small flow arrow on your drawing. Once selected, the following options appear on the command line. Specify insertion point or [Scale/X/Y/Z/Rotate/PScale/PX/PY/PZ/PRotate]:

From here you can either select the insertion point or enter an option. Refer to the option descriptions under the North Arrow heading for more information.

Flow Arrow, Large The Flow Arrow, Large menu option allows you to place a large flow arrow on your drawing. Once selected, the following options appear on the command line. Specify insertion point or [Scale/X/Y/Z/Rotate/PScale/PX/PY/PZ/PRotate]:

From here you can either select the insertion point or enter an option. Refer to the option descriptions under the North Arrow heading for more information.

Battery Limit The Battery Limit menu option allows you to place battery limit information on your drawing. Once selected, the following appears on the command line. Digitize Battery Limit start point :

Select the a point on your drawing and CADPIPE prompts you to pick another point. To point :

Press Esc to end the Battery Limit command.

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Annotation The Annotation sub-menu on the Drawing Sheets pull-down provides access to several AutoCAD commands enabling you to add various annotations to your section view drawings. They are: Place Coordinates and W.P. Elevation.

Place Coordinates The Place Coordinates menu option allows you to place selected coordinates on your drawing. The following appears on the command line. Digitize Point to Annotate :

Pick a point and the CADPIPE-Place Coordinates dialog box appears (see Figure 10-8). From here you can choose what text will be displayed and whether or not to place a CenterLine Symbol. Make your selections in the dialogue box and click OK.

Figure 10-8

You are prompted to pick a text start point and rotation angle, and CADPIPE places the coordinate text.

W.P. Elevation The W.P. Elevation menu option allows you to place work point elevation information on your drawing. The following appears on the command line. Digitize Work Point :

Pick a point and next you are prompted to pick a text start point.

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CHAPTER 11. ARCHITECTURAL FUNCTIONS CADPIPE provides you with several architectural drawing aids to enable you to quickly draw structural and architectural details for your drawing. All objects created using these functions are created as 3-D objects. The architectural objects that can be created include Columns, Beams, Joists, Walls, Ceiling Grids, and Lights. These functions are found in the Arch pull-down menu.

Columns The Columns function can create rectangular columns or use a vertical Beam as a column. The columns are drawn as 3-D objects and placed on their own layer named COLUMNS. The system automatically creates this layer when you select Columns from the menu. Placing Rectangular Columns When you select Columns from the menu, the following prompt appears. Point for Column:

The system uses this point as the center point for the column. If you have a centerline grid on the drawing, use the AutoCAD INTERSECTION SNAP mode and select the intersections for your column placement (see Figure 11-1).

Pick Point

Pick Point

Pick Point

Pick Point

Figure 11-1

When you select the point for your column, the Column dialog box appears allowing you to size the column and select other options (see Figure 11-2).

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Figure 11-2

Height The Height dimension is the vertical dimension of the column. It is measured from 0 elevation to the top of the column. If you desire to place a column at an elevation other than 0, first place the column and then change the bottom elevation of the column by using the CADPIPE Move Fitting(s) command and give it a new Z dimension. Width and Depth These are the horizontal dimensions of the rectangular column. Width refers to the X distance while Depth is the Y distance on the screen (see Figure 11-3).

Figure 11-3

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Beams as Columns The Column function allows you to place a beam as a vertical column. This is an automatic process when you select Use Beam (see Figure 11-4) in the Column dialog box.

Figure 11-4

When you select Use Beam, the Select Type of Beam dialog box appears (see Figure 11-5). Click on the type of beam you want and the Beam Database dialog box appears or choose Cancel and enter the beam in text boxes. Choose the proper beam from the list by clicking on it. Select OK to return to the Column dialog box. When you select OK, the beam is placed vertically, in the same manner as the rectangular columns (see Figure 11-6).

Figure 11-5

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Figure 11-6 Rectangular Beam

Rotate The Rotate box allows you to enter an angle by which to rotate the column as it is placed. To rotate the column, toggle on the Rotate box and enter an angle in the deg box.

Beams The Beam function allows you to create 3-D structural beams for placement in your drawing. These Beams will be placed on their own layer named BEAMS. This layer is created when you select Beams from the menu. The Beams function is found in the Arch pull-down. Placing Beams When you select Beams from a menu, the Select Type of Beam dialog box appears. Choose the type of beam you want, then the following system prompt appears. Column/First Point for Beam:

This prompt gives you two options to identify a starting point for the beam; you can pick a start point or select a column. Pick Point If you choose to pick a point for the start of the beam, move the cursor to the desired location and press Enter. All beams use centerline for placement. If you have a centerline column grid layout on your drawing, you can use the AutoCAD INTERSECTION SNAP mode and select the intersections of the centerlines to place your beams (see Figure 11-7).

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Pick Point

Pick Point

Figure 11-7

When you select a point, the system issues the following prompt. Elevation of Beam :

Here you must enter the elevation for the top, center, or bottom of the beam or accept the default elevation by pressing Enter. The default elevation is the last elevation used in the Beams function. Note: When you select the beam from the beam database, you can determine if you want that beam placed by top, center, or bottom (see Beam Database dialogue box, Figure 11-8).

When you enter an elevation, the following prompt appears. Column/Second Point for Beam:

Select a second point for the end of the beam. When you select this point, the next prompt is issued. Elevation of Other End :

At this prompt, you must enter an elevation for this end of the beam or accept the default by pressing Enter. The default is the elevation entered with the first point of the beam. The system prompts you for the elevation twice because you can draw a sloping beam. Beam Size When you enter an elevation or select the default, the following prompt appears. Beam Number or Size/:

You have the option to enter a beam number (W14x78) and the system sizes the beam from the Beam Database, or to enter a beam size (12x14), or to press Enter and search through the Beam Database for a certain beam. If you enter a beam number (such as W14X78), the system sizes the beam and places it on the drawing. If you enter a beam number not found in the database, the Beam Database dialog box appears (see Figure 11-8). When it appears, you can add the beam number to the database and then place it. If you enter a size (such as 12x14), the system places a beam using the dimensions entered. The example (12x14) would result in a beam with a flange of 12" and a height of 14".

HVAC-125 If you press Enter, the Beam Database dialog box appears (see Figure 11-8).

Figure 11-8

When the Beam Database dialog box appears, you can scroll through the Beam Names directory and select the correct beam by clicking on it. When you click on the beam name, the system updates the Width and Depth dimensions to the dimensions of the selected beam. To place the beam, select OK. Pick a Column If you have drawn your columns using the CADPIPE Column function, you can type C at the following system prompt. Column/First Point for Beam:

The following prompt appears. Pick a Column to Place Beam On:

When you select a column, the system automatically selects a point in the center of the column as a starting point for the beam and sets the correct elevation for the beam placing it on the top of the column. The system issues the following prompt. Column/Second Point for Beam:

Type C again and select a column. When you select another column, the system automatically sets the elevation for the beam and pick a point so that the beam is centered on the columns. After selecting the columns the system prompts. Beam Number or Size/:

HVAC-126 You have the option to enter a beam number (W14x78) and the system sizes the beam from the Beam Database, or to enter a beam size (12x14), or to press Enter and search through the Beam Database for a certain beam. If you enter a beam number (such as W14X78), the system sizes the beam and places it on the drawing. If you enter a beam number not found in the database, the Beam Database dialog box appears (see Figure 11-8). When it appears, you can add the beam number to the database and then draw it. If you enter a size (such as 12x14), the system will draw a beam using the dimensions entered. The example (12x14) would result in a beam with a flange of 12" and a height of 14". If you press Enter, the Beam Database dialog box appears (see Figure 11-8). When the Beam Database dialog appears, you can scroll through the Beam Names directory and select the correct beam by clicking on it. When you click on the beam name, the system will update the Width and Depth dimensions to the dimensions of the selected beam. To place the beam, select OK. The system will place the beam on the selected columns (see Figure 11-9).

Places Beam in Center

Pick Column Places in Center Pick Column

Figure 11-9

Place By: Top, Center, Bottom The Place By box allows you to designate where the beam is to be placed with regard to the elevation that was entered when the system prompted for a beam elevation. The beam is placed according to the button selected in this box. Selecting Top uses the elevation as the top of the beam, Center centers the beam Depth at that elevation, and Bottom places the bottom of the beam at the entered elevation. Beam Orientation (channel, angle, and tee beams) When you select a channel beam, angle, or tee beam name, the Select Orientation dialog box appears allowing you to specify the direction in which you want the beam to face (see Figure 11-10). Select the direction button and OK. The system places the beam. Note: You can also use any beam as a column (see Beams as Columns in this chapter).

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Figure 11-10

CADPIPE Beam Database The CADPIPE system includes a database of beam sizes and designators. The information for sizes and designators for the beam database was obtained from the American Institute of Steel Construction for imperial dimensions and from the Canadian Institute for metric dimensions. Edit Beam DB Edit Beam DB is found in the Arch pull-down menu. When you select Edit Beam DB, the Select Type of Beam dialog box appears. Choose the type of beam you want and then the Beam Database dialog box appears (see Figure 11-11). This dialog box contains options to Add, Change, or Remove an item and to Print the database.

Figure 11-11

Beam Names This is a list of all beams in the beam database. The name consists of an alpha designator and numeric values. The alpha character designates the shape of the beam (see Figure 11-12), while the numeric values signify nominal Width and Depth dimensions.

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W Shapes S Shapes C Shapes

Figure 11-12

Add... The Add feature allows you to add additional beams to your database. When you select Add, the BeamDB Edit dialog box appears (see Figure 11-13). Enter the Beam Number and Beam Dimensions in the proper boxes and select OK to add the beam to the database.

Figure 11-13

Change... The Change feature allows you to select an existing beam in the database and change any part of the Beam Number or any Beam Dimension. When you select Change, the BeamDB Edit box appears (see Figure 11-13), allowing you to select the values you want to change. Remove This feature removes a beam from the database. Pick the beam you want to remove from the Beam Names list and select the Remove button.

HVAC-129 Print The Print function sends the database file to a printer.

Joist The Joist function allows you to create 3-D open web joists for placement in your drawing. These Joists are placed on the JOISTS layer. This layer is created when you select Beams or Joist from the menu. The Joist function is found in the Arch pull-down. Placing Joists When you select Joist from the menu, the following prompt appears. First Point for Joist:

When you select a point, another prompt appears. Second Point for Joist:

After you have selected the second point, the Open Web Joist dialog box appears (see Figure 1114).

Figure 11-14

Joist Dimensions Width and Depth The Width and Depth dimensions refer to the size of the joist. The Width dimension is the width of the top and bottom flanges of the joist. The Depth refers to the dimension between the top and bottom flanges (see Figure 11-15).

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Figure 11-15

Elevation 1 and Elevation 2 The Elevation 1 and Elevation 2 values correspond to the elevation at the first pick point and elevation at the second pick point for the joist. The system draws a sloping joist if these elevations are different. Number of Webs (on top) This number determines how many webs are placed in the joist. The system places the specified number of open webs on the top flange of the joist. Place By: Top, Center, Bottom The Place By box allows you to designate where the joist is to be placed with regard to the elevation that has been entered in the Elevation 1 and Elevation 2 boxes. The joist is placed according to the button selected in this box. Selecting Top uses the elevation as the top of the joist, Center centers the joist Depth at that elevation, and Bottom places the bottom of the joist at the entered elevation. Length, Angle, and Web Length These values are for your information and are determined by the points picked and value entered in Number of Webs box.

Walls The Walls function creates 3-D walls for your architectural backgrounds. The Walls function is found on the Arch pull-down menu. The walls are placed on their own layer named WALLS. This layer is automatically created when you select Walls from the menu.

HVAC-131 Drawing Walls When you select Walls from the menu, the following prompt appears. Enter the elevation for the bottom of the wall :

At this prompt you can select the default or enter a new elevation. The default is the last entered wall elevation. When you press Enter, the following prompt appears. Enter the elevation for the top of the wall :

At this prompt you can select the default or enter a new elevation. The default is the last entered wall elevation. When you press Enter, the following prompt appears. Enter the wall thickness :

At this prompt select the default or enter a new wall thickness. The default is the last entered wall dimension. When you press Enter, the following prompt appears. Left/Right/:

There are three options with this prompt. If you select a point the system uses that point as the centerline of the wall and widens the wall from the centerline. If you select Left by typing L and then select the points, the system assumes these points are the left side of the wall and widens the wall from the left. If you select Right by typing R and then select the points, the system assumes that these points are the right side of the wall and widens the wall from the right (see Figure 11-16).

First Pick Point

First Pick Point

First Pick Point

Figure 10-16

Second Pick Point

Second Pick Point

Second Pick Point

HVAC-132 Note: The Left or Right side of the wall is determined by the direction in which the wall is drawn.

When you select the first point for the wall the following prompt appears. Newwall/Close/Quit/Undo:

At this prompt you can continue to select points for the wall and then press Enter to draw it. You can Undo a point any time during the selection of points by typing U and Enter. You can then repick the point. The Quit option quits the wall command without drawing any walls. The Close option closes the boundary of the points that have been picked and draws the wall. You must have picked at least three points to use the Close option. The Newwall option will draw the wall and return you to the following prompt. Enter the elevation for the bottom of wall :

When picking the points to define your walls, you can use all the AutoCAD OBJECT SNAP modes (see AutoCAD manual OBJECT SNAP modes).

Grids The Grid function creates ceiling grids at specified elevations and sizes for use in your drawing. The Grid function is found on the Arch pull-down. The grid is placed on its own layer named GRID. This layer is automatically created when you select Grid from the menu. Drawing a Ceiling Grid When you select Grid from the menu, you are prompted to select a boundary to define the area of grid placement. The following system prompts appear when you select Grid. Select First Point:

Select a point and the next prompt appears. Close/Undo/:

At this prompt you can continue to select points to define the grid boundary to draw it. You must select each corner of the grid boundary. When all corners have been selected, use the Close option to close the boundary. You must have picked at least three points to use the Close option. You can Undo a point any time during the selection of points by typing U. You can then repick the point. When the boundary has been defined the following prompt appears. Point to Start Grid From:

Select the point from which you want the grid to be drawn. Note: You can use the AutoCAD SNAP OBJECT modes when selecting points.

When you select a point, the Ceiling Grid dialog box appears (see Figure 11-17).

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Figure 11-17

The Ceiling Grid dialog box allows you to set the dimensions determining the size and elevation of the grid.

Grid Dimensions Width and Depth The Width is the dimension of the grid in the X direction and the Depth is the dimension of the grid in the Y direction. Elevation The Elevation of the grid is measured from the floor (0-Z coordinate). Rotation You can select the Rotation box and enter an angle in the deg box to rotate the grid before placing it. After setting the dimensions and elevation, select OK. The system draws the ceiling grid (see Figure 11-19).

Lights The Lights function creates rectangular or round lights at specified elevations and sizes for use in your drawing. The Lights function is found on the Arch pull-down menu. The lights are placed on their own layer named LIGHTS. This layer is automatically created when you select Lights from the menu. When you select Lights from the menu, the following prompt appears. Placement Point (Lower Left Corner) for light:

When you select a point, the Light dialog box appears (see Figure 11-18). The Light dialog box allows you to set the dimensions determining the size and elevation of the lights.

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Figure 11-18

Light Dimensions Width, Depth and Height The Width is the dimension of the light in the X direction, Depth is the dimension of the light in the Y direction, and Height is the dimension of the light in the Z direction. Elevation The Elevation of the light is measured from the floor (0-Z coordinate). Rotation You can select the Rotation box and enter an angle in the deg box to rotate the light before placing it. After setting the dimensions and elevation, select OK. The system draws the light (see Figure 11-19)

Figure 11-19

HVAC-135 Draw ‘X” in Light When this toggle is on, an ‘X’ will be drawn in the lights you place on the drawing. The default setting is on.

Archictural Configure The Configure. . . command on the Arch pull-down menu allows you to set up your Architectural layers and Tooltip Query information. When you select it, the CADPIPE Configure Archictural dialog box appears (see Figure 11-20).

Figure 11-20

Architectural Layers To set up your Architectural Layers, select the Configure Architectural Layers tab on the Configure Architectural dialog. The Layer Control Options field lists the current Architectural Layers and their settings. To edit a layer, select it from the list. You can now perform one of three options: toggle Use System Layer, Rename the Layer, and Select a new color. The Use System Layer Toggle tells CADPIPE to use the system defaults (Name and Color) for that layer. The Layer Name: field allows you to edit the layer name. Simply type a new name and click the Save Changes button.

HVAC-136 The Select Color. . . button allows you to change the layer color. Press the button and choose a new color from the AutoCAD Select Color Dialog. Architectural Tooltip Query To set up your Tooltip Query, select the Tooltip Query tab on the Configure Architectural dialog. The Tooltip Query tab contains two main sections labeled Available Tip Info and Tip Info to Display along with several buttons and toggles to set up the tooltip query function (see Figure 11-21).

Figure 11-21

Available Tip Info The Available Tip Info field lists the available information that can be displayed when your cursor hovers over a CADPIPE Item. Use the arrow buttons or double click items to add or remove tip info. Tip Info to Display The Tip Info to Display field lists the information that is displayed when your cursor hovers over a CADPIPE Item. Use the arrow buttons or double click items to add or remove tip info. Show Dynamic Tooltip Query. The Show Dynamic Tool Tip toggle turns the Tip Info Display On and Off. With the Show Dynamic Tool Tip toggle selected, CADPIPE displays the Tip Info. With the Show Dynamic Tool Tip toggle unchecked, CADPIPE will not display the Tip Info. Label Each Tip The Label Each Tip toggle determines if the Tip Info Names are displayed along with the Tip Info. With the Label Each Tip toggle selected, CADPIPE displays the Tip Info Names and Tip Info. With the Label Each Tip toggle unchecked, CADPIPE displays just the Tip Info.

APPENDIX A. AVAILABLE FITTINGS Rectangular Fittings

Round and Oval Fittings

Straight Cut to Length Straight Square 90 Degree Elbow Radius 90 Degree Elbow Square Non-90 Degree Elbow Radius Non-90 Degree Elbow Square Tee Radius Tee Square Y-Branch Radius Y-Branch Square Cross Radius Cross Pants Transition Offset Drop Cheek 90 Elbow Drop Cheek Non-90 Elbow Drop Cheek Tee Drop Cheek Y-Branch Drop Cheek Cross Square Goose Neck Radius Goose Neck Square to Round/Oval Straight Takeoff Radius Takeoff Rectangular Tap Round/Oval Tap Boot Shoe Tap Flex Connector End Cap

Straight Cut to Length Straight Spiral 90 Degree Elbow Non-90 Degree Elbow Straight Tee Conical Tee Lateral Conical Lateral Reducing Tee Reducing Conical Tee Reducing Lateral Reducing Conical Lateral 0 Degree Y-Branch 30 Degree Y-Branch 45 Degree Y-Branch 60 Degree Y-Branch 90 Degree Y-Branch Straight Cross Conical Cross Lateral Cross Conical Lateral Cross Reducer Offset Round/Oval to Square Rectangular Tap Round/Oval Tap Boot Shoe Tap Flex Connector End Cap