How Much Gravel for a 12×14 French drain?
The answer
6.84 ton
For a 12×14 ft french drain at 12" depth, with 10% overage included. Estimated cost: $376 at US national average pricing.
Calculate Gravel
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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 × 14 = 168 sq ft
- 2. Volume: 168 × (12/12) = 168 cubic feet
- 3. Convert + overage: Add 10% for waste → 6.84 ton
- 4. Cost: 6.84 × $55.00 ≈ $376
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