Table of contents : Contents About the Editors Treatment of Well Water Contaminated with Septic Tank Effluent Using a Modified Compacted Sand Filter 1 Introduction 2 Objectives of the Study 3 Preparation of STE 4 Materials 4.1 Gravel 4.2 Sand 4.3 Silver-Coated Sand 5 Model Fabrication 5.1 Modified Drawer Compacted Sand Filtration (MDCSF) 6 Results and Discussions 7 Economic Aspects 8 Advantages and Limitations of MDCSF 9 Conclusions References Heavy Metal Fractionation in Aerobic and Anaerobic Sewage Sludge 1 Introduction 2 Materials and Methods 2.1 Sewage Sludge 2.2 Sequential Extraction of Heavy Metals in Sludge 2.3 Analysis 3 Results and Discussion 3.1 Characteristics of Sludge 3.2 Heavy Metal Content 3.3 Fractionation of Heavy Metals in Sewage Sludge 4 Conclusions References Environmental Remediation of Oil Contaminated Soil 1 Introduction 2 Aim and Objectives 3 Methodology 4 Principle of Design 4.1 Conventional Design Model 4.2 TRIZ Model 4.3 Innovative Design Model of MB Generator 5 Design Layout 6 Results and Discussions 6.1 Experimental Investigations 6.2 Results of Remediation 6.3 Validation of Mathematical Model 7 Conclusions References Treatment and Reuse of Periyar Sedimented Soil Using Nanochemicals 1 Introduction 2 Materials 2.1 Soil 2.2 Terrasil 2.3 Zycobond 3 Result and Discussion 3.1 Variation of Unconfined Compressive Strength (UCC) on Addition of Nanochemicals Upon Curing 4 Discussion 4.1 Proctor Compaction Results 5 Discussion 5.1 Effect of Optimum Moisture Content by Addition of Nanochemical 5.2 Variation of CBR 6 Discussion 7 Conclusion References A Study on Red Soil to Form an Bouncy Cricket Pitch 1 Introduction 2 Materials 2.1 Bentonite 2.2 Red Soil 3 Methodology 4 Results and Discussions 4.1 Liquid Limit 4.2 Plastic Limit 4.3 Plasticity Index 4.4 Compaction Characteristics 4.5 Image Processing of Vertical Bounce Test 5 Conclusions References Influence of Flood on the Behavior of Friction Piles 1 Introduction 2 Laboratory-Scale Load Tests 2.1 Materials Used 2.2 Experimental Setup 2.3 Preparation of Test Bed and Flooding Condition 3 Results 4 Discussion 5 Conclusion References Feasibility Study of Using Coir Geotextiles in Permeable Pavement Construction for Stormwater Management 1 Introduction 1.1 Structure of a Permeable Pavement 2 The Geotextile Layer in Permeable Pavements 2.1 The Function of the Geotextile Layer—Review of Studies Conducted 3 The Characteristics of Geotextiles in Pavement Construction 4 Characteristics of Coir Geotextiles 4.1 Possibilities of Using Coir in Permeable Pavements 5 Conclusions References Assessment of Effect of Filler in the Properties of Cement Grout 1 Introduction 2 Materials 2.1 Sand 2.2 Cement 2.3 Metakaolin 3 Methodology 4 Results and Discussions 4.1 Viscosity 4.2 Bleeding 4.3 Cylinder Model Test 5 Conclusions References High-Strength Geopolymer Mortar Cured at Ambient Temperature 1 Introduction 2 Experimental Programme 2.1 Materials 2.2 Details of Mix Proportion 2.3 Preparation of Specimens 3 Results and Discussions 4 Proposed Strength Prediction Models 5 Comparison of Prediction with Experiment Data 6 Conclusion References Development of High Strength Lightweight Coconut Shell Aggregate Concrete 1 Introduction 2 Experimental Programme 2.1 Materials Used 2.2 Mix Proportioning 3 Results and Discussions 4 Conclusion References Comparison of the Performance Between Concrete Filled and Stiffened LDSS Column 1 Introduction 1.1 General 2 Numerical Investigation 2.1 LDSS Material Properties 2.2 Buckling Analysis 2.3 Modelling 3 Results and Discussions 3.1 Buckling Capacity (kN) 3.2 Load Deflection Graphs 4 Conclusion References Aspect Ratio Factor for Strength Correction of Pressed Earth Brick Prisms 1 Introduction 2 Experimental Program 2.1 Materials 2.2 Details of Specimens 2.3 Testing 2.4 Results 2.5 Effect of Aspect Ratio on Masonry Strength 3 Strength Correction Factors 4 Conclusion References Numerical Investigation of Punching Shear Strengthening Techniques for Flat Slabs 1 Introduction 2 Numerical Investigation 2.1 Properties Test Specimen 2.2 Modeling 3 Results and Discussions 4 Conclusions References Investigation of Bolted Beam–Column Steel Connections with RBS Subjected to Cyclic Loading 1 Introduction 2 Modeling of Specimens 2.1 Introduction 2.2 Loading and Boundary Conditions 2.3 Connections and Contacts in the Model 2.4 Geometric Modeling 3 Results and Discussions 3.1 General 3.2 Stress Distribution 3.3 Energy Absorption Capacity 4 Interpretation of Analysis Results 5 Conclusions References Effect of Shock Absorbers in Enhancing the Earthquake Resistance of a Multi-storeyed Framed Building 1 Introduction 2 Experimental Investigations 2.1 Methodology of Work 3 Results and Discussion 4 Conclusions References Review Paper on Pavement Condition Assessment 1 Introduction 2 Pavement Performance Models 2.1 Surface Characteristics Based Models 2.2 Models Based on Environmental Characteristics 2.3 Pavement Performance Rating (PPR) Models 2.4 Factors Affecting the Condition of the Pavement 3 Tools for Modeling 3.1 Regression Models 3.2 Markov Chain 3.3 Multi-attribute Utility Theory (MAUT) 3.4 Soft Computing 4 Conclusions References Land Base and Digital Elevation Model Creation Using Unmanned Aerial Vehicle 1 Introduction 1.1 Literature Review 1.2 Summary from Literature Review 2 Materials and Methods 2.1 Drone Deploy 2.2 Agisoft Metashape Professional 2.3 ArcGIS 2.4 Study Area 3 Methodology 4 Results 4.1 The Layout of M.V.G.R College of Engineering 4.2 Digital Elevation Model as Output 4.3 Comparison of DEMs 4.4 Comparison Between UAV DEM from Agisoft and USGS DEM 4.5 Water Resource Applications as a Result 5 Summary and Conclusions References Multiphase Modelling of Orifice Cavitation for Optimum Entrance Roundness 1 Introduction 2 Methodology 2.1 Experimental Data from Literature 2.2 Software Used 3 Results and Discussion 3.1 Calibration and Validation 3.2 Effect of R/d Ratio 4 Conclusions References Flood Risk Assessment Methods—A Review 1 Introduction 2 Flood Hazard Assessment 2.1 Estimation of Design Flood 2.2 Hydraulic Modelling 3 Flood Vulnerability Assessment 3.1 Flood Vulnerability Index (FVI) Method 3.2 Vulnerability Curve Method 3.3 Method Based on Disaster Loss Data 4 GIS Method 5 Flood Risk Assessment 6 Conclusions References Flood Hazard Assessment and Flood Inundation Mapping—A Review 1 Introduction 2 Flood Hazard Map—Important Factors 2.1 Landuse and Landcover Change 2.2 Rainfall Intensity 2.3 Drainage Density 2.4 Slope and Elevation 2.5 Distance to the Main Channel 2.6 Soil Permeability or Infiltration Characteristics 3 Case Studies 3.1 Flood Hazard Mapping 3.2 Flood Inundation Mapping 4 Conclusions References