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How Much #57 Stone for a 22x25 Driveway?

A 22 by 25 foot driveway is 550 square feet. How much #57 stone for a 22x25 driveway depends on depth: at 4 inches it is about 6.79 cubic yards or 9.2 tons. Suppliers usually sell by the ton, so the tonnage is the number to give them.

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The math for a 22x25 driveway

  1. Area: 22 × 25 = 550 sq ft.
  2. Depth in feet: 4 ÷ 12 = 0.333 ft.
  3. Cubic feet: 550 × 0.333 = 183.3 cu ft.
  4. Cubic yards: ÷ 27 = 6.79 yd³.
  5. Tons: × 1.35 = 9.2 tons.

The volume and tonnage calculator does this for any size.

#57 stone needed by depth

DepthCubic yardsTons (approx.)Tons +10%
2 in3.404.65.0
3 in5.096.97.6
4 in6.799.210.1
6 in10.1913.815.1

About #57 stone

Since #57 is washed and open-graded, it moves a little underfoot. Many installers put it over a compacted base of a dense-graded stone rather than straight on soil. Weight per yard is a planning number; the scale ticket at the yard is the real one.

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. This driveway sees car and truck traffic, so match the depth to that load rather than to the minimum.

Ordering tips

  • Round up. Compaction and uneven ground eat material. Adding about 10 percent is common.
  • Delivery size. 10.1 tons fits in a single 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 #57 stone

Works well for:

  • French drains and drainage layers
  • The top course of a gravel driveway
  • Under sheds where water needs to drain away

Less suited to:

  • A standalone base, since it does not pack hard without fines
  • Paver setting beds
  • Walk paths meant for strollers or wheelchairs

Quick reference numbers

  • Per inch over 100 sq ft: about 0.42 tons of #57 stone (0.31 cubic yards).
  • Per inch over 1,000 sq ft: about 4.2 tons.
  • Another size for comparison: a 8x16 area at 4 inches takes about 2.1 tons.
  • Weight used here: about 1.35 tons per cubic yard.

Common estimating mistakes

  • Skipping drainage. Water sitting under any surface softens the base and leads to ruts and potholes.
  • Using inches as if they were feet. Depth has to be divided by 12 before you multiply; skipping that step inflates the order twelvefold.
  • Assuming every supplier uses the same weight. Two yards selling the same product name can quote different tons per yard.
  • Mixing up cubic yards and tons. Yards are volume, tons are weight; convert with the product’s weight per yard.

Questions people ask

How many tons of #57 stone for a 22x25 driveway?

About 9.2 tons at 4 inches deep, or 10.1 tons with 10 percent extra.

How many cubic yards is a 22x25 driveway at 4 inches?

About 6.79 cubic yards.

How much does a cubic yard of #57 stone weigh?

Usually around 1.3 to 1.45 tons, depending on stone size, fines and moisture.

How deep should #57 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 22x25?

550 square feet.

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