Crusher run calculator for Rhode Island
A compacting base material calculated at its finished depth, rather than as loose fill.
Enter your project dimensions
After compaction, crusher run takes up 10-15% less space than it did loose in the truck. Ordering only to the measured finish depth can leave the base half an inch short, so this calculator has a +10% allowance turned on. It may be called Bank Run Gravel, gravel borrow, pit gravel in Rhode Island, or 2 inch minus on certain tickets. Each name describes crushed stone with fines included, weighing about 3,000 lb per cubic yard and forming a surface that resists tire movement.
Calculating finished compacted depth
- Find the area in feet by measuring the lane's length and width, or the dimensions of the pad.
- Choose the required finished compacted depth: 4 inches for paths and pavers, 4-6 for driveways, and 6-8 for truck areas.
- Divide cubic feet by 27 for yards, then multiply by 1.5 for tons. Leave the +10% enabled, since specifications refer to rolled depth.
Ton coverage
| Compacted depth | 1 cubic yard covers | 1 ton covers |
|---|---|---|
| 2 inches | 162 sq ft | ≈ 108 sq ft |
| 4 inches | 81 sq ft | ≈ 54 sq ft |
| 6 inches | 54 sq ft | ≈ 36 sq ft |
| 8 inches | 41 sq ft | ≈ 27 sq ft |
Uses and limits
- For driveway bases, compact 4-6 inches first. Add 2-3 inches of #57 or driveway gravel above it for the travel surface.
- For lower-cost rural lanes, crusher run by itself can form a usable driving surface. Plan on summer dust and regrading at 2-4 year intervals.
- Paver and slab bases need 4 inches, placed and compacted in 2-inch lifts. Use the Paver Base Calculator for the complete paver assembly.
- For shed and hot-tub pads, place 4 inches over stripped ground, or 6 where soil is soft.
- Do not use crusher run in a French drain. Its fines help it bind but also retain water, so drainage calls for clean #57 or drain rock.
Example calculation: a 20 x 10 parking pad
At a compacted depth of 4 inches, two hundred square feet works out as 200 x 0.333 = 67 cubic feet = 2.5 cubic yards, or 3.7 tons. With the allowance included, plan on 4 tons. Install it in 2-inch layers, compacting each layer before placing the next. Two 2-inch layers hold up for years longer than placing 4 inches at once, and an afternoon plate compactor rental costs less than repairing the first pothole.
Delivery guidance
- Have the base and surface stone delivered together. Delivery is free either way.
- Start by dumping at the distant end of the run, then work the material back toward the pile. On larger pads, spreading downhill is easier than pushing uphill.
- Lightly dampen each lift before compaction. Moist crusher run tightens up more than dry material.
- Hold back a wheelbarrow-load for repairs. It can be used later to fill potholes.
Price considerations
Crusher run is produced with fines left in rather than being washed and sorted. Keeping the +10% allowance on a 4-ton order can avoid a separate half-ton delivery. See the Crusher Run product page for the per-ton price, compare Road Base, and have both driveway layers delivered together free.
Crusher run, Bank Run Gravel, gravel borrow, and pit gravel: common questions
How much crusher run is needed for a driveway?
What does a yard of crusher run weigh?
How does crusher run differ from gravel?
Are crush and run and crusher run the same?
Can crusher run serve as the final surface?
How much will crusher run compress?
Other calculators
Base quantity calculated.
Crusher run by the ton with free delivery.
