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.
1.62
16 * 20 = 320 sq ft. at 4" thick concrete will cover 80 sq ft. 320 / 80 = 4 yards.
Assuming 4 inches thick, about 65.19 yards or rounded 66 yards (always round up to nearest yard).
10 yards
6.67 Cubic Yards
If it is 4 inches deep/thick, 2 cubic yards. If it is 6 inches deep/thick, 3 cubic yards.
39.1116 cubic yards
15 cubic yards
15 cubic yards
How many square yards in a 20x18 feet 3 inches thick
Depends on how thick it is. At 4 inches thick, you would nee about 5.5 cubic yards adjusting for safety. At 6 inches, you'd need about 8 cubic yards. You can play with different thicknesses with the linked concrete pad calculator.
8.25 cubic yards of concrete
Okay first dont go 3 inches thick ... it will crack it's to thin 3.5 " to 4" thick is the min. and it'll take 2.777 yards so you'll have to get 3 yards
90 sq yds at 4" thick.
one (1) cubic yard of concrete four inches thick will cover 80 sq. feet. 85 yards x 81 = 6885 sq. feet.