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How Much #57 Stone for a 36x48 Pole Barn?

A 36 by 48 pole barn covers 1,728 square feet. Spread 6 inches deep, the pad takes about 32.00 cubic yards, which is roughly 43.2 tons of #57 stone. That answers how much #57 stone for a 36x48 pole barn for a typical floor base.

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The math

  1. Area: 1,728.0 sq ft.
  2. Depth in feet: 6 ÷ 12 = 0.500 ft.
  3. Cubic yards: 1,728.0 × 0.500 ÷ 27 = 32.00 yd³.
  4. Tons: × about 1.35 tons per yard = 43.2 tons.

The crushed stone calculator does this for any size.

#57 stone needed by depth

DepthCubic yardsTons of #57 stoneTons +10%
4 in21.3328.831.7
6 in32.0043.247.5
8 in42.6757.663.4
12 in64.0086.495.0

Pole barn pad depth

A 4-inch layer works for storage and light use on firm soil. For equipment, vehicles or a future concrete floor, 6 to 8 inches of compacted stone is common, and soft ground may need more plus fabric underneath.

Extending the pad past the walls

Adding 1 foot on every side makes the pad 38x50, or 1,900 sq ft. At 6 inches that is about 47.5 tons. A wider apron sheds water away from the posts and gives the eave drip a place to land.

Layering the base

Strip topsoil, level and compact the subgrade, then spread stone in lifts of about 3 to 4 inches, compacting each. A coarser base topped with a finer, packable stone often makes the most solid floor.

Ordering and delivery

Most quarries and landscape yards deliver by the ton; ask whether there is a minimum and a delivery fee, and where the driver can dump without damaging your lawn. #57 is a washed stone of roughly 1/2 to 1 inch with few fines; it drains fast but stays a little loose on its own. The scale ticket is the real weight; tons per yard here is a planning figure.

Questions people ask

How many tons of #57 stone for a 36x48 pole barn?

About 43.2 tons at 6 inches deep.

How many yards of #57 stone for a 36x48 pad?

About 32.00 cubic yards at 6 inches.

How deep should a pole barn gravel pad be?

About 4 inches for light use and 6 to 8 inches for vehicles or a future slab.

How many tons of #57 stone are in a cubic yard?

Roughly 1.35 tons for planning, but suppliers vary with stone size and moisture.

Do I need to compact it?

Yes for anything that carries weight. Compact in lifts of a few inches with a plate compactor.

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