Concrete for a 10×10 slab at 5" thick
A 10 ft × 10 ft slab poured 5 inches thick needs the amounts below (a 10% waste allowance is already included).
Concrete needed
1.70cubic yards
46
cubic feet
77
80 lb bags
102
60 lb bags
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For a slab this size, 1.70 cubic yards is usually cheapest as ready-mix delivery. About 77 bags of 80 lb mix would do it by hand.