Estimating in Building Construction

243

CONVERSIONS

APPENDIXE

USEFUL CONVERSION

FACTORS

Cement

Water

Aggregate (Approximate)

Ready-Mix Concrete (Approximate)

Concrete: Weight (Approximate)

Lengths

1 mile5,280 ft

3 feet1 yard

12 inches1 foot

1 cf115 pounds (lightweight)

1 cf145 pounds (heavyweight)

1 ton2,000 pounds0.50 cy13.5 cf

1 cy27 cf2 tons4,000 pounds

1 cy=27 cf=2,800 pounds=1 .4 tons

1 ton2,000 pounds19 cf0.70 cy

1 cf7.5 U.S. gallons62.4 pounds

1 U.S. gallon231 ci0.1337 cf8.35 pounds

1 barrel4 sacks376 pounds

1 Sack1 cf94 pounds

Areas

Volume

Metric to US Conversions Factors

1 square cm 0.155 sf

1 square m 10.764 sf1.196 sy

1 cubic cm 0.06 ci

1 cubic dm 61.02 ci

1 cubic m 1.308 cy

1 millimeter (mm)0.0394 inch

1 centimeter (cm)0.3937 inch

1 decimeter (dm) 3.937 inches

1 meter (m) 39.37 inches

1 meter (m) 1.1 yards

1 kilometer (km) 0.621 mile

1 cf62.3 pounds

1 gallon8.33 pounds

1 gallon231 ci

1 cf7.4850 gallons

27 cf1 cy

1,728 ci1 cf

1 acre43,560 sf

100 sf1 square

9 sf1 sy

144 si1 sf