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Q: How heavy is 1 sq ft of concrete 4 inches thick?
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How much concrete for 2.5 ft x 15ft. and 4 thick?

12.5 cubic feet. Assuming you meant 4 INCHES thick..


How many yards of concrete for 8 ft by 8 ft by 4 inches thick?

A square slab measuring 8 ft by 8 ft by 4 inches will require a minimum of 0.8 cubic yards.


How much concrete you need for slab 12ft by 10ft by 4 inches thick?

12 ft x 10 ft x .333 ft (4 in) = 39.96 cu ft. You need enough concrete for 40 cubic ft.


How much concrete you need for slab 12ft by 10ft by 4 inches thick.?

12 ft x 10 ft x .333 ft (4 in) = 39.96 cu ft. You need enough concrete for 40 cubic ft.


How many square yards of concrete is in a 16' x 20' area at 4 inches thick?

16 * 20 = 320 sq ft. at 4" thick concrete will cover 80 sq ft. 320 / 80 = 4 yards.


What is the formula to figure cubic yards of concrete at 8 inches thick?

A pad that is 4 inches think covers 80ish sq ft per yard, so 8 inch would be 40ish sq ft per yard of concrete


If you pour 85 yards of concrete 4 inches thick how many sq ft is that?

one (1) cubic yard of concrete four inches thick will cover 80 sq. feet. 85 yards x 81 = 6885 sq. feet.


How many bags of concrete is required to fill an area of 12 ft by 8 ft by 3 inches thick?

You need 1.16tonne. You need to know the weight of a bag of concrete and then divide 1.16 by that weight and that will give you the answer you need.


How many square feet will a yard of concrete cover 6 inches thick?

6 inches is 1/6 of a yard, so a cubic yard of concrete will cover 6 sq yards = 54 sq ft


How many yards of concrete in a 20ft by 30 ft slab 5 inches thick?

9.3 cubic yards of cement is required for this slab.


How many yards of concrete do you need for 96 feet of 6Inch curb and gutter?

16.667 yards of concrete in a 30 ft x 30 ft x 6 in there are 27 cubic feet of concrete in one yard IE: 27 square ft, 12 inches thick or 54 square ft, 6 inches thick


How much concrete is in a yard of concrete?

27 cubic feet okay from hayesconcrete.com 81 sq ft is= 4 inches 54 sg ft is = 6 inches