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How Much Crusher Run for a 12x75 Driveway?

How much crusher run for a 12x75 driveway is a quick volume problem. 900 square feet at 4 inches comes to 11.11 cubic yards. Crusher run usually weighs about 1.5 to 1.7 compacted tons per cubic yard, so plan on roughly 17.2 tons.

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The math for a 12x75 driveway

  1. Area: 12 × 75 = 900 sq ft.
  2. Depth in feet: 4 ÷ 12 = 0.333 ft.
  3. Cubic feet: 900 × 0.333 = 300.0 cu ft.
  4. Cubic yards: ÷ 27 = 11.11 yd³.
  5. Tons: × 1.55 = 17.2 tons.

The volume and tonnage calculator does this for any size.

Crusher run needed by depth

DepthCubic yardsTons (approx.)Tons +10%
3 in8.3312.914.2
4 in11.1117.218.9
6 in16.6725.828.4
8 in22.2234.437.9

About crusher run

The fines in crusher run fill the gaps between stones, so it weighs more per yard than clean stone once compacted. Plan on rolling or plate-compacting it in lifts. If the yard sells by the cubic yard instead of the ton, use the cubic-yard column directly.

Preparing the driveway

Strip sod and soft topsoil, grade for drainage and compact the subgrade before any stone goes down. Gravel drives last longer with a compacted base layer under the top stone and a slight crown so water runs off. For car and truck traffic, the depths in the table above are a reasonable starting range.

Ordering tips

  • Round up. Compaction and uneven ground eat material. Adding about 10 percent is common.
  • Delivery size. 18.9 tons may take more than one typical dump truck load; small loads may carry a delivery fee. See how many tons of gravel in a dump truck.
  • Bulk vs bags. At this size bulk delivery is usually the practical choice.
  • Where it drops. Have the truck dump as close to the driveway as firm ground allows.

Good and poor uses for crusher run

Best suited to:

  • Base under asphalt, pavers or concrete
  • Gravel drives that need a firm, packed surface
  • Shed pads and equipment pads

Poor fit for:

  • Drainage layers, since the fines slow water
  • Decorative beds
  • Spots where you want water to soak straight through

Quick reference numbers

  • Per inch over 100 sq ft: about 0.48 tons of crusher run (0.31 cubic yards).
  • Per inch over 1,000 sq ft: about 4.8 tons.
  • Another size for comparison: a 20x25 area at 4 inches takes about 9.6 tons.
  • Weight used here: about 1.55 tons per cubic yard.

Where estimates go wrong

  • Using inches as if they were feet. Depth has to be divided by 12 before you multiply; skipping that step inflates the order twelvefold.
  • Forgetting that compaction shrinks loose material. A loose 4-inch spread of a dense-graded stone may finish closer to 3 inches after rolling.
  • Measuring only the main rectangle. Aprons, turnouts and curved edges add real square footage.
  • Ignoring the base. A thin surface layer over soft soil fails early no matter how much material is on top.

Questions people ask

How many tons of crusher run for a 12x75 driveway?

About 17.2 tons at 4 inches deep, or 18.9 tons with 10 percent extra.

How many cubic yards is a 12x75 driveway at 4 inches?

About 11.11 cubic yards.

How much does a cubic yard of crusher run weigh?

Usually around 1.5 to 1.7 compacted tons, depending on stone size, fines and moisture.

How deep should crusher run be for a driveway?

The table above shows 3 to 8 inches. Shallower depths suit top dressing; deeper depths suit new installs and heavier use.

How many square feet is 12x75?

900 square feet.

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