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Concrete for a 16 × 24 slab
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4.74 yd³
16 × 24 ft (384 ft²) at 4 in thick, before waste
Concrete for a 16 × 24 slab by thickness
| Thickness | yd³ | yd³ +10% | 80 lb bags | 60 lb bags | Ready-mix @ $165/yd³ |
|---|---|---|---|---|---|
| 4 in | 4.74 | 5.21 | 235 | 313 | $860 |
| 5 in | 5.93 | 6.52 | 294 | 392 | $1,076 |
| 6 in | 7.11 | 7.82 | 353 | 470 | $1,291 |
| 8 in | 9.48 | 10.43 | 470 | 626 | $1,721 |
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 16x24 slab?
A 16 × 24 ft slab 4 in thick is 4.74 cubic yards; order about 5.21 yd³ with 10% extra. At 6 in thick it is 7.11 yd³.
How many bags of concrete for a 16x24 slab?
About 235 bags of 80 lb concrete (or 313 × 60 lb) at 4 in thick including 10% extra. For this size, ready-mix delivery is usually more practical than bags.
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