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11.852 cubic yards
If the slab is the standard 4" deep, you will need at least 8.89 cubic yards.
At a poured depth of 4 inches, you will need 4.94 cubic yards.
16 * 20 = 320 sq ft. at 4" thick concrete will cover 80 sq ft. 320 / 80 = 4 yards.
16 ft * 47 ft * 4 inches =16/3 yards * 47/3 yards * 4/36 yards = 9.3 yards approx.
how many yards of concrete will i need to do a 20 x20 x4 slab
10 yards
40.1 cubic yards
15 cubic yards
15 cubic yards
Volume = 11.85 Cubic Yards.
8.25 cubic yards of concrete
At 4" thick you will need 1.23 cubic yards.
11.852 cubic yards
about 5 yards if your slab is 4" deep
39.1116 cubic yards
9 x 4 =36 x .33 = 11.88 / 27 =.44 yards (4" thick)