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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.


How much concrete for a slab 12 ft By 20 ft 4 inches thick?

To calculate the volume of concrete needed for a slab that is 12 feet by 20 feet and 4 inches thick, first convert the thickness to feet: 4 inches is equal to 1/3 foot. The volume in cubic feet is then calculated as follows: 12 ft × 20 ft × (1/3 ft) = 80 cubic feet. Therefore, you will need 80 cubic feet of concrete for the slab.


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 much concrete do you need for a Slab 74x48x4?

To calculate the volume of concrete needed for a slab that measures 74 inches long, 48 inches wide, and 4 inches thick, first convert the dimensions to feet: 74 inches = 6.17 feet, 48 inches = 4 feet, and 4 inches = 0.33 feet. Then, multiply the dimensions: 6.17 ft × 4 ft × 0.33 ft = approximately 8.16 cubic feet. Therefore, you will need about 8.16 cubic feet of concrete for the slab.