Understanding Gravel Calculations
Gravel is sold by the ton or cubic yard, with weight being the most common unit for delivery. Different types of gravel have different densities, so it is important to select the correct gravel type for accurate calculations. This calculator factors in the specific weight of your chosen gravel type.
Gravel Types and Uses
| Gravel Type | Size | Best Uses |
|---|---|---|
| Pea Gravel | 3/8" | Pathways, patios, drainage |
| Crushed Stone | Varied | Driveways, general fill |
| 57 Stone | 3/4" - 1" | Drainage, pipe bedding |
| Crusher Run | Mixed | Driveway base, compacts well |
| River Rock | 1" - 3" | Landscaping, dry creek beds |
| Decomposed Granite | Fine | Pathways, xeriscaping |
Recommended Depths by Application
| Application | Recommended Depth | Notes |
|---|---|---|
| Landscaping/Beds | 2-3 inches | Decorative purposes |
| Pathways | 3-4 inches | Foot traffic only |
| Residential Driveway | 4-6 inches | Regular vehicle traffic |
| Heavy Traffic Areas | 6-8 inches | Commercial or heavy loads |
| Sub-base | 8-12 inches | Under concrete/asphalt |
Gravel Weight Reference
Different gravel types have different weights per cubic yard:
- Pea Gravel: ~2,800 lbs/cubic yard
- Crushed Stone: ~2,800 lbs/cubic yard
- River Rock: ~2,700 lbs/cubic yard
- Road Base: ~3,000 lbs/cubic yard
- Limestone: ~3,000 lbs/cubic yard
Gravel Installation Tips
- Prepare the base by removing vegetation and leveling the ground
- Use landscape fabric to prevent weeds and stabilize loose gravel
- For driveways, install edging to contain the gravel
- Compact crusher run and road base for stability
- Order 10% extra to account for settling and spreading
- Consider a layered approach: large base stone, topped with finer gravel