How Much Gravel for a 14×14 French drain?
The answer
7.99 ton
For a 14×14 ft french drain at 12" depth, with 10% overage included. Estimated cost: $439 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: 14 × 14 = 196 sq ft
- 2. Volume: 196 × (12/12) = 196 cubic feet
- 3. Convert + overage: Add 10% for waste → 7.99 ton
- 4. Cost: 7.99 × $55.00 ≈ $439
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