1、METRIC PRACTICE GUIDE FOR CONCRETE AND CONCRETE AGGREGATESInch-Pound Units Factor SI Unitsinch 3 25.4 (exact) = millimetre (mm)square inch 3 6.452 = square centimetre (cm2)cubic foot 3 0.02832 = cubic metre (m3)pound per cubic foot 3 16.02 = kilogram per cubic metre (kg/m3)pound per cubic yard 3 0.5
2、933 = kilogram per cubic metre (kg/m3)ounce (U.S. fluid) 3 29.57 = cubic centimetre (cm3) (millilitre)quart (U.S. fluid) 3 0.9464 = cubic decimetre (dm3) (litre)pound (avoirdupois) 3 0.4536 = kilogram (kg)ton 3 0.9072 = megagram (Mg) (metric ton)psi 3 6.895 = kilopascal (kPa)psi 3 0.006895 = megapas
3、cal (MPa)grain 3 0.06480 = gram (g)horsepower 3 745.7 = watt (W)square centimetre per gram (cm2/g) 3 0.1 (exact) = square metre per kilogram (m2/kg)calorie per gram 3 4.184 (exact) = kilojoule per kilogram (kJ/kg)pound-force (lbf) 3 4.448 = newton (N)pound-force (lbf) x 0.004448 = kilonewton (kN)tem
4、perature, degree Fahrenheit (F) (F 32)/1.8 = temperature, degree Celsius (C)temperature interval, degree Fahrenheit (F) F/1.8 = temperature interval, degree Celsius (C)NoteWhen converting from alternative designation of sieves in inch-pound units, the proper quantity in SI units is that given in Table 1 of Specification E 11 forWire-Cloth Sieves for Testing Purposes, and not the quantity calculated from the alternative designation. (For example, the “1-in.” sieve is the 25.0-mm sieve, not the25.4-mm sieve).1
