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CONVERSION FACTORS: U.S. CUSTOMARY ANO SI METRIC UNITS
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To Convert from U.S. Customary to SI, Multiply by
U.S. Units
SI Metric Units
inch (in.) inch (ip.) inch (in.)
meter (m) centimeter (cm) millimeter (mm)
0.0254 2.54 25.4
feet (ft) yard (yd) mile (mi)
meter (m) meter (m) kilometer (km)
0.305 0.914 1.609
angle, degree (°) temp., degree (°F)
radian (rad) Celsius (°C)
0.0174 (°F - 32)/1.80
acre (acre) gallon (gal)
hectare (ha) liter (l)
0.4052 3.79
pound (lb) ton (ton, 2000 lb)
kilogram (kg) kilogram (kg)
0.4536 907.2
pound force ()bf) pound/in 2 (psi) pound/ft 2 (psf)
newton (N) newton/m 2 (N/m 2 ) newton/m 2 (N/m 2 )
4.448 6895 47.88
foot-pound (ft-lb) horsepower (hp) British thermal unit (BTU) British thermal unit (BTU)
joule (J) watt (W) joule (J) kilowatt-hour (kwh)
1.356 746 1055 2.93 X 10-4
Definitions I newton-force that will give a 1-kg mass an acceleration of I m/sec 2 I joule-work done by a force of I N over a displacement of I m I pascal = I N/m 2 I kilogram force (kgf) = 9.807 N I gravity-acceleration (g) = 9.807 m/sec 2 l acre (a)= 4052 m2 l hectare (ha) = I 0,000 m2 I kip (kip)= 1000 lb
Probability Concepts in Engineering Emphasis on Applications in Civil & Environmental Engineering
2NDEDITION
Prob ab iIity Concepts in Engineering* Emphasis on Applications in Civil & Environmental Engineering
ALFREDO H-S.
LG
Emeritus Professor. University of Illinois at Urbana-Champaign and University of Cal!fmia, Irvine
WILSON H. TANG Chair Professor. Hong Kong University