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1 sq. feet = 144 sq. inchesSo,392 sq. feet = 144 * 392 sq inches = 56448 sq. inchesVolume of cement needed = 56448 sq inches * 4 inch = 225792 cubic inches225792 cubic inches = 1568 cubic feet
8 inches = 2/3 foot27 cubic feet = 1 cubic yardVolume of your slab = 40' x 60' x 2/3 = 1,600 cubic feet = 59.26 cubic yards. (rounded)
30
Cement weighs about 150 punds per cubic foot, and there are 1728 cubic inches in a cubic foot, so if the block is solid then it weighs 150x8x8x12/1728 = 67 pounds
630 cubic inches
Well, you make a sidewalk from concrete, not just cement. Concrete consists of cement, sand, gravel and water. You will need 5.5 cubic feet of concrete. A standard sidewalk grade of concrete would be 1 part cement, 2 parts sand, 3 parts gravel- so the sidewalk needs 0.91 cu ft of cement- about 87 pounds worth- plus sand and gravel. If you want to buy the premixed bags of concrete (like Sacrete), you will need about 17 of the 40 pounds bags. And you did not ask, but 3 inches is kind of skinny- I would go for at least a 4 inch thick sidewalk.
147 cubic feet of cement are required.
You will need 3.7 cubic yards of cement.
You will need at least 9.68 cubic yards of cement.
1 sq. feet = 144 sq. inchesSo,392 sq. feet = 144 * 392 sq inches = 56448 sq. inchesVolume of cement needed = 56448 sq inches * 4 inch = 225792 cubic inches225792 cubic inches = 1568 cubic feet
Depends on the commodity. 300 cubic inches of mulch and 300 cubic inches of cement will not weigh the same.
13 1/3 cubic yards
0.04 cubic yards.
0.22 cubic yards.
Forty five 80 pound bags of cement are needed to make one cubic yard of concrete.
Cubic feet needed is the thickness is 4 inches:416Cubic yards:15.3660 pound bags92580 pound bags 694
(15,080 cubic inches) / (1,728 cubic inches per cubic foot) = 8.727 cubic feet (rounded)(8.727 cubic feet) / (27 cubic feet per cubic yard) = 0.323 cubic yard (rounded)