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Crusher run calculator for North Dakota

A compacting base material for measured-depth installation rather than estimating loose fill.

Enter your project dimensions

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ft
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ft
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in
Enter a depth between 0.25 and 24 inches

Crusher run settles 10-15% as it is compacted, compared with its loose depth in the truck. Measure for the finished depth, since ordering only that amount can leave the base half an inch short after compaction. This calculator has the +10% extra material setting turned on for that reason. You may see this material listed as Class 13, surface gravel, Class 13 gravel in North Dakota, or 2 inch minus on a ticket. Each name refers to crushed stone containing fines, weighing about 3,000 lb per cubic yard, which compacts into a surface that resists tire movement.

Buy for compacted depth

  1. For the footprint, measure in feet: use length multiplied by width for a lane, or take the pad measurements.
  2. Choose the required finished compacted depth: 4 inches for paths and pavers, 4-6 for driveways, and 6-8 beneath trucks.
  3. Divide cubic feet by 27 for yards, multiply by 1.5 for tons, and leave the +10% selected. Specifications refer to the material after it has been rolled.
Tons = (Area sq ft × Compacted depth in ÷ 12) ÷ 27 × 1.5 × 1.10

Tons of 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 a driveway base, compact 4-6 inches, then place 2-3 inches of #57 or driveway gravel as the travel layer.
  • For an economical rural lane, crusher run can provide the drivable crust on its own. It will dust in summer and need regrading every 2-4 years.
  • Paver and slab bases need 4 inches compacted in 2-inch lifts. The Paver Base Calculator covers the complete paver assembly.
  • For shed and hot-tub pads, use 4 inches over stripped ground and 6 on soft soil.
  • Do not use it in a French drain. Its binding fines also retain water, while drainage calls for clean #57 or drain rock.

Example: a 20 x 10 parking pad

For two hundred square feet at 4 inches compacted, the calculation is 200 x 0.333 = 67 cubic feet = 2.5 cubic yards, or 3.7 tons. With the allowance, order 4 tons. Place and compact half, then repeat with the remaining material. Two 2-inch lifts last years longer than a single 4-inch pour, and renting a plate compactor for the afternoon costs less than repairing the first pothole. By the second delivery, drivers can often see skipped compaction in the ruts.

Delivery guidance

  • Have base and surface stone delivered together; the project schedule remains on track, and delivery is free either way.
  • Begin at the distant end of the run and work back toward the pile. On large pads, working downhill instead of uphill saves a full day.
  • Before compaction, mist every lift lightly. Crusher run that is damp locks noticeably tighter than dry material.
  • Save a wheelbarrow-load for touch-ups. Road crews use the same material for pothole patches.

Pricing information

Crusher run is often the lower-cost structural material at a stone yard because it comes straight from the crusher instead of being washed and sorted. The +10% allowance on a 4-ton order costs a few dollars and can avoid another half-ton delivery. See the Crusher Run product page for the per-ton price, compare Road Base, and order both driveway layers in one free delivery.

Crusher run, Class 13, surface gravel, Class 13 gravel: common questions

How much crusher run is required for a driveway?
For a lane, calculate the area at a compacted 4-6 inches, then use 1.5 tons per yard and allow 10%. A 50 x 10 ft lane set 4 inches deep 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, and may be a little heavier after rain. The fines fill gaps between the stones, accounting for the added weight compared with clean gravel.
How are crusher run and gravel different?
Crusher run retains stone dust, unlike clean-screened gravel such as #57. That dust helps it compact firmly for bases; clean stone remains loose and drains for surfaces and drainage. For a driveway, use them in that order.
Are crush and run and crusher run identical?
These are regional labels for one product family. Class 13, surface gravel, Class 13 gravel, and 2 inch minus all refer to the same family. Any of those names brings the same blend on the truck.
Can crusher run serve as a finished surface?
Yes, on rural and low-traffic drives. It compacts into a firm surface that holds up through weather, though it creates dust during dry spells and calls for regrading every few years. A later top layer of 2 inches of #57 addresses both.
How much will crusher run compact?
Compaction runs Ten to fifteen percent. A 4-inch loose layer compacts to about 3.5 inches. That is why the calculator begins with its allowance on and why specifications list compacted depth.
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