Crusher Run Calculator
Calculate Crusher Run (Dense Grade Aggregate / Quarry Process / ABC / 21A) for driveway subbases, shed foundations, and road base in cubic yards and US tons.
1Project Shape & Dimensions
2Gravel Type & Density
A blend of crushed stone (up to 3/4") and fine stone dust. Compacts into a solid, nearly impermeable base that resists rutting and washouts.
3Gravel Depth & Compaction
Accounts for roller compaction settlement, uneven ground contours, and wheelbarrow spill.
Material & Delivery Cost Estimator
- Bulk delivery dump trucks usually require a 10–12 ft wide clearance path.
- Always verify if your quarry quotes in Tons or Cubic Yards.
- Order ~10% extra to prevent having to pay a second delivery fee for a half-ton deficit.
Crusher Run Coverage & Compaction Reference Table (1.55 tons/yd³)
| Project Area | Compacted Depth | Required Volume | Total Weight (US Tons) | 0.5 ft³ Bags |
|---|---|---|---|---|
| 100 sq ft (Shed Base Pad) | 4 inches | 1.44 yd³ (incl. 15% compaction) | 2.23 tons | 78 bags |
| 200 sq ft (Small Parking Bay) | 4 inches | 2.84 yd³ (incl. 15% compaction) | 4.40 tons | 154 bags |
| 500 sq ft (Standard Driveway Section) | 5 inches | 8.87 yd³ (incl. 15% compaction) | 13.75 tons | 480 bags |
| 1,000 sq ft (Full 100x10ft Driveway Base) | 6 inches | 21.30 yd³ (incl. 15% compaction) | 33.02 tons | 1,150 bags |
Crusher Run FAQs
Q: What is Crusher Run and how does it work?
Crusher Run (also known as Dense Grade Aggregate, Quarry Process/QP, Crusher Dust, ABC, or #411) is a mechanical blend of angular crushed stone (up to 3/4") and fine stone dust. When watered and compacted with a plate tamper or heavy roller, the stone dust fills all voids between larger rocks, forming an interlocking, rock-hard foundation that resists rutting.
Q: How much does a cubic yard of Crusher Run weigh?
A cubic yard of loose Crusher Run weighs approximately 1.55 US tons (3,100 lbs or 1,406 kg). When fully compacted in place, its effective density increases to approximately 1.65 tons per cubic yard (3,300 lbs/yd³).
Q: How deep should Crusher Run be installed for driveways and shed pads?
For passenger car driveways, parking aprons, and shed foundations, install 4 to 6 inches of compacted Crusher Run. For heavy commercial vehicle traffic or RV pads over soft soil, install 6 to 8 inches in two separate 3-to-4-inch compacted lifts.
Q: What compaction safety factor should I add for Crusher Run?
Always add a 15% to 20% volume multiplier when calculating Crusher Run. Because stone fines settle and pack tightly into gaps during mechanical tamping, 1 cubic yard of loose aggregate compresses down to approximately 0.83–0.87 cubic yards in-place.