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Concrete for a 8 × 8 slab
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0.79 yd³
8 × 8 ft (64 ft²) at 4 in thick, before waste
Concrete for a 8 × 8 slab by thickness
| Thickness | yd³ | yd³ +10% | 80 lb bags | 60 lb bags | Ready-mix @ $165/yd³ |
|---|---|---|---|---|---|
| 4 in | 0.79 | 0.87 | 40 | 53 | $143 |
| 5 in | 0.99 | 1.09 | 49 | 66 | $179 |
| 6 in | 1.19 | 1.30 | 59 | 79 | $215 |
| 8 in | 1.58 | 1.74 | 79 | 105 | $287 |
Bags include 10% extra. Ready-mix prices vary by region; small loads often carry a short-load fee.
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FAQ
How much concrete do I need for a 8x8 slab?
A 8 × 8 ft slab 4 in thick is 0.79 cubic yards; order about 0.87 yd³ with 10% extra. At 6 in thick it is 1.19 yd³.
How many bags of concrete for a 8x8 slab?
About 40 bags of 80 lb concrete (or 53 × 60 lb) at 4 in thick including 10% extra.
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