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Crusher run calculator for Oregon

Plan the base by its finished compacted depth, not by an estimate of loose material.

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
Add 5% extra for compaction & spillage

Loose crusher run tightens by 10-15% once compacted. If you buy only for the measured depth, the finished base can end up half an inch short. This calculator therefore begins with a +10% allowance selected. It may be listed under names such as Quarry Run, pit run, bar run in Oregon, or 2 inch minus on some tickets. Each name describes crushed stone containing fines, at about 3,000 lb per cubic yard, which compacts into a tire-resistant surface.

Order for finished depth

  1. In feet, find the footprint by multiplying lane length and width, or entering the pad dimensions.
  2. Choose the needed 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, then multiply by 1.5 for tons. Leave the +10% selected. Specifications refer to the depth after rolling.
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

Suitable uses and limits

  • For driveways, place a 4-6 inch compacted foundation, followed by 2-3 inches of #57 or driveway gravel as the finished driving layer.
  • For an economical rural lane, crusher run can serve as the driving surface by forming a compacted crust. It will be dusty in summer and typically needs reshaping every 2-4 years.
  • For pavers and slabs, install a 4 inch base in compacted 2-inch layers. The Paver Base Calculator covers the complete paver build-up.
  • After removing surface soil, use 4 inches beneath shed and hot-tub pads, or 6 where the soil is soft.
  • Do not use it in a French drain. Its fines help it bind but also retain water; clean #57 or drain rock is intended for drainage.

Example: a 20 x 10 parking pad

Begin with the math: 200 x 0.333 = 67 cubic feet = 2.5 cubic yards, or 3.7 tons. For a 4-inch compacted layer, include the allowance and order 4 tons. Put down one half and compact it, then repeat with the remaining material. Building with two 2-inch courses lasts years longer than placing a single 4-inch layer. Renting a plate compactor for the afternoon is less costly than fixing the first pothole. By the second delivery, ruts often show where compaction was missed.

Delivery guidance

  • Have the base material and surface stone brought together in one delivery so the work can continue on schedule; delivery is free either way.
  • Unload at the distant end of the run, then work the stone back toward the pile. On large pads, spreading downhill rather than uphill saves a full day.
  • Before compacting, mist each lift. Damp crusher run tightens more visibly than dry material.
  • Hold back a wheelbarrow-load for future patches. This material is also used for pothole repairs.

How pricing works

Crusher run is crusher output rather than washed, sorted stone, so it can be a lower-cost base material. On a 4-ton order, the +10% allowance can prevent the need for a separate half-ton delivery. Review Crusher Run pricing by the ton, compare Road Base, and arrange both driveway layers in one free delivery.

Crusher run, Quarry Run, pit run, bar run: common questions

How much crusher run is required for a driveway?
Start by measuring the lane area, then allow for a compacted depth of 4-6 inches. Convert using 1.5 tons per yard and include 10%. A 50 x 10 ft lane with a 4 inches layer works out to about 10 tons delivered.
What does a yard of crusher run weigh?
A cubic yard is about 3,000 lb and 1.5 tons, with somewhat more weight after rain. Fine material fills the gaps between stones, adding weight compared with clean gravel.
How do crusher run and gravel differ?
Crusher run retains stone dust, while gravel products such as #57 are screened clean. The dust helps create a hard-compacting base. Clean stone remains loose for drainage and surface layers. A driveway commonly uses both in that order.
Are crush and run and crusher run identical?
These are regional terms for the same product family. Quarry Run, pit run, bar run, and 2 inch minus describe the same type of blend, so any of these names results in the same material.
Can crusher run serve as a finished surface?
Yes, it works for rural and lightly used driveways. It compacts into a stable crust that holds up through weather, but dry periods create dust and the surface will need reshaping every few years. Adding 2 inches of #57 later addresses both concerns.
How much will crusher run compress?
Plan for ten to fifteen percent compaction. A loose 4-inch layer finishes at roughly 3.5 inches. The calculator keeps its allowance on by default for this reason, and specifications state compacted depth.
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