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How Much Crushed Stone for a 22x120 Driveway?

How much crushed stone for a 22x120 driveway is a quick volume problem. 2,640 square feet at 4 inches comes to 32.59 cubic yards. Crushed stone usually weighs about 1.35 to 1.5 tons per cubic yard, so plan on roughly 45.6 tons.

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The math for a 22x120 driveway

  1. Area: 22 × 120 = 2,640 sq ft.
  2. Depth in feet: 4 ÷ 12 = 0.333 ft.
  3. Cubic feet: 2,640 × 0.333 = 880.0 cu ft.
  4. Cubic yards: ÷ 27 = 32.59 yd³.
  5. Tons: × 1.4 = 45.6 tons.

The volume and tonnage calculator does this for any size.

Crushed stone needed by depth

DepthCubic yardsTons (approx.)Tons +10%
2 in16.3022.825.1
3 in24.4434.237.6
4 in32.5945.650.2
6 in48.8968.475.3

About crushed stone

Crushed stone has fractured faces, so the pieces interlock when compacted. That is why it holds a driveway or pad shape better than round stone of the same size. 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. 50.2 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.

When to choose crushed stone

Works well for:

  • Driveway top courses and parking pads
  • Shed and hot tub bases
  • Backfill behind walls when a clean size is used

Think twice for:

  • Barefoot areas, since angular stone is rough
  • Play areas
  • Places that need a smooth rolling surface for wheels

Quick reference numbers

  • Per inch over 100 sq ft: about 0.43 tons of crushed stone (0.31 cubic yards).
  • Per inch over 1,000 sq ft: about 4.3 tons.
  • Another size for comparison: a 14x28 area at 4 inches takes about 6.8 tons.
  • Weight used here: about 1.4 tons per cubic yard.

Mistakes that throw off the order

  • Skipping drainage. Water sitting under any surface softens the base and leads to ruts and potholes.
  • Forgetting that compaction shrinks loose material. A loose 4-inch spread of a dense-graded stone may finish closer to 3 inches after rolling.
  • Ignoring the base. A thin surface layer over soft soil fails early no matter how much material is on top.
  • Assuming every supplier uses the same weight. Two yards selling the same product name can quote different tons per yard.

Questions people ask

How many tons of crushed stone for a 22x120 driveway?

About 45.6 tons at 4 inches deep, or 50.2 tons with 10 percent extra.

How many cubic yards is a 22x120 driveway at 4 inches?

About 32.59 cubic yards.

How much does a cubic yard of crushed stone weigh?

Usually around 1.35 to 1.5 tons, depending on stone size, fines and moisture.

How deep should crushed stone be for a driveway?

The table above shows 2 to 6 inches. Shallower depths suit top dressing; deeper depths suit new installs and heavier use.

How many square feet is 22x120?

2,640 square feet.

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