Length × width × real construction depths = the gravel you actually need and what it costs installed. Base and surface calculated separately, the way the driveway gets built.
How it works: volume = length × width × depth ÷ 27 per layer (new construction figures a 10" compacted base + 3.5" surface), tonnage ≈ yards × 1.4, and installed pricing runs $15–$30 per linear foot at 12-ft width — the full spec is in the driveway guide, and the benchmarks live on the cost data page.
Free site walks for new driveways, rebuilds, and mud-season rescues.
Your estimate is carried into the notes below. A free site walk turns the range into a flat quote.
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