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Crusher run calculator for Rhode Island

A compacting base material calculated at its finished depth, rather than as loose fill.

Enter your project dimensions

ft
Enter a length greater than 0
ft
Enter a width greater than 0
ft
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in
Enter a depth between 0.25 and 24 inches

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

  1. Find the area in feet by measuring the lane's length and width, or the dimensions of the pad.
  2. Choose the required finished compacted depth: 4 inches for paths and pavers, 4-6 for driveways, and 6-8 for truck areas.
  3. Divide cubic feet by 27 for yards, then multiply by 1.5 for tons. Leave the +10% enabled, since specifications refer to rolled depth.
Tons = (Area sq ft × Compacted depth in ÷ 12) ÷ 27 × 1.5 × 1.10

Ton coverage

Compacted depth1 cubic yard covers1 ton covers
2 inches162 sq ft≈ 108 sq ft
4 inches81 sq ft≈ 54 sq ft
6 inches54 sq ft≈ 36 sq ft
8 inches41 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?
Calculate the lane surface area, allow for a compacted depth of 4-6 inches, convert at 1.5 tons per yard, and add 10%. A 50 ft by 10 ft lane compacted to 4 inches comes to roughly 10 tons delivered.
What does a yard of crusher run weigh?
A cubic yard weighs about 3,000 lb, or 1.5 tons, with somewhat more weight after rain. Fines fill the voids around the stone, adding weight compared with clean gravel.
How does crusher run differ from gravel?
Crusher run retains stone dust, while gravel such as #57 is screened clean. The dust creates a dense base; clean stone remains open for surfaces and drainage. For a driveway, install the crusher run first and the clean stone above it.
Are crush and run and crusher run the same?
These are regional names for the same product family: Bank Run Gravel, gravel borrow, pit gravel, and 2 inch minus. Each refers to the same blend.
Can crusher run serve as the final surface?
For low-traffic and rural drives, it can. It forms a compacted crust, though dry periods can bring dust and the surface may need regrading every few years. Adding 2 inches of #57 later can address both.
How much will crusher run compress?
Expect ten to fifteen percent compaction. A 4-inch loose layer compacts to roughly 3.5 inches, which is why the calculator keeps its allowance selected and specifications use compacted depth.

Base quantity calculated.

Crusher run by the ton with free delivery.

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