Decomposed Granite (DG) Calculator
Calculate volume, tonnage, and compaction allowance for stabilized and natural DG pathways, bocce courts, and xeriscapes.
1. Select Project Shape
2. Enter Dimensions
3. Select Gravel Aggregate & Density
4. Add Waste & Compaction Buffer
Gravel Layer & Excavation Cross-Section Simulator
Visualize multi-layer ground excavation, plate compaction settling, and dump truck hauling logistics in real-time.
To achieve a final compacted depth of 6.0 inches, you must spread 7.1 inches of loose uncompacted aggregate before running the plate compactor.
Recommended Depth & Base Specifications for Decomposed Granite (DG) Calculator
Selecting the proper installation depth is the single most critical factor in preventing premature rutting, sinking, or weed breakthrough.
| Layer / Application | Recommended Depth | Stone Aggregate Type | Contractor Notes |
|---|---|---|---|
| Xeriscape Ground Cover | 2 Inches | Natural Raw DG | Loose mulch substitute for drought-resistant native planting beds. |
| Stabilized Footpath / Patio | 3 Inches | Stabilized DG (with Binder) | Moistened and plate-compacted in 1.5-inch lifts to cure into a sandstone-like solid pavement. |
| Bocce Ball Court / Light Drive | 4 Inches | PolyPavement / Resin DG | Heavy-duty binder application over aggregate base for firm rolling resilience. |
💡 Contractor Installation Pro Tips
- Decomposed Granite compacts significantly: always add a 15% to 20% compaction factor to your raw geometric calculation.
- Install DG in multiple 1.5-inch layers (lifts), lightly wetting each lift before running a vibrating plate compactor over the surface.
Frequently Asked Questions About Decomposed Granite (DG) Calculator
How much does a yard of decomposed granite weigh?
One cubic yard of DG weighs approximately 3,000 lbs (1.5 tons), making it denser than standard round gravel due to its high ratio of fines.
What is the difference between natural DG and stabilized DG?
Stabilized DG includes an organic or polymer binder mixed with stone fines that hardens after wetting and compacting, dramatically reducing tracking and dust.
Missing a Stone Type or Have Feedback?
We update density presets and formulas regularly based on local quarry feedback.