Gravel Compaction Calculator
Calculate how much gravel, sand, or aggregate you need for your project. Account for compaction factor to get accurate material requirements for driveways, paths, and construction projects.
Step 1: Project Dimensions
Understanding Depth Requirements
For driveways: 4-6 inches compacted. For pathways: 2-3 inches. For drainage layers: 6-12 inches. Always compact in 2-3 inch layers for best results.
Step 2: Material & Compaction
About Compaction Factors
Compaction reduces volume by 10-30% depending on material. Gravel typically compacts 15-20%, sand 10-15%, and topsoil 25-30%. Always order 10-20% extra material to account for compaction and waste.
Gravel Calculation Results
Total Material Needed
Material Type Comparison
| Material Type | Density (lbs/yd³) | Volume Needed | Total Weight |
|---|
Material Volume Breakdown
Compaction Formula
Total Material = Base Volume × (1 + Compaction Factor)
Base Volume = Length × Width × (Depth/12) / 27 cubic yards. Compaction factor accounts for material settling (typically 10-30%). Always order extra for waste and uneven surfaces.
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