Calculate base material quantities with compaction factors
| Application | Min Depth | Material | Compaction |
|---|---|---|---|
| Concrete Slab (garage) | 4" | Crushed stone | 95% |
| Paver Patio | 4-6" | Gravel base + sand | 95% |
| Driveway (gravel) | 6-8" | Road base | 95% |
| Driveway (asphalt) | 6" | Crushed aggregate | 98% |
| Foundation (residential) | 4" | Gravel/stone | 95% |
| Retaining Wall | 6" | Crushed stone | 95% |
| French Drain | Varies | Washed gravel | None |
| Utility Trench Bedding | 4-6" | Pea gravel/sand | Varies |
| Material | Tons/CY | Lbs/CY | kg/m³ |
|---|---|---|---|
| Crushed Stone (3/4") | 1.40 | 2,800 | 1,680 |
| Gravel (road base) | 1.35 | 2,700 | 1,620 |
| Pea Gravel | 1.30 | 2,600 | 1,560 |
| Decomposed Granite | 1.25 | 2,500 | 1,500 |
| Sand (dry) | 1.10 | 2,200 | 1,320 |
| Limestone | 1.50 | 3,000 | 1,800 |
| Slag | 1.60 | 3,200 | 1,920 |
| Riprap (large) | 2.00 | 4,000 | 2,400 |