Volume of concrete needed = 4 x 12 x 1/3 = 4 x 4 = 16 cubic feet
81
55
How many square yards in a 20x18 feet 3 inches thick
one (1) cubic yard of concrete four inches thick will cover 80 sq. feet. 85 yards x 81 = 6885 sq. feet.
A cubic yard is 46,656 cubic inches. Spread to a thicknes of 5 inches, a cubic yard of concrete covers 9332.1 square inches, which is 64.8 square feet.
No, it only comes 48 inches wide.
The concrete typically used for driveway construction is around 4 inches thick.
Concrete driveways are no less than 3.5 inches to 4.5 inches.
A concrete driveway should be at least 4 inches thick to ensure durability and longevity.
4 To 6 inches
90 sq yds at 4" thick.
81
About 162sf.
55
should be at lest 4 inches
10 yards
7.1