How Much Gravel for a 12×24 French drain?
The answer
11.73 ton
For a 12×24 ft french drain at 12" depth, with 10% overage included. Estimated cost: $645 at US national average pricing.
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You need
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ton
- Area
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- Volume
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- With 10% overage
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- Or in 0.5 cu ft bag
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- Estimated cost (US avg)
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How we calculated this
- 1. Area: 12 × 24 = 288 sq ft
- 2. Volume: 288 × (12/12) = 288 cubic feet
- 3. Convert + overage: Add 10% for waste → 11.73 ton
- 4. Cost: 11.73 × $55.00 ≈ $645
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