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How Much #57 Stone for a 48x64 Pole Barn?

How much #57 stone for a 48x64 pole barn: about 76.8 tons for a 6-inch pad covering the 3,072 square foot footprint. Many builders extend the pad a foot or two past the walls, which adds material.

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The math

  1. Area: 3,072.0 sq ft.
  2. Depth in feet: 6 ÷ 12 = 0.500 ft.
  3. Cubic yards: 3,072.0 × 0.500 ÷ 27 = 56.89 yd³.
  4. Tons: × about 1.35 tons per yard = 76.8 tons.

The crushed stone calculator does this for any size.

#57 stone needed by depth

DepthCubic yardsTons of #57 stoneTons +10%
4 in37.9351.256.3
6 in56.8976.884.5
8 in75.85102.4112.6
12 in113.78153.6169.0

How deep the barn pad should be

Plan the pad around what the barn will hold. Hay and tools sit fine on 4 inches of compacted stone; tractors, trucks or a later slab pour justify 6 to 8 inches built up in compacted lifts.

Extending the pad past the walls

Adding 1 foot on every side makes the pad 50x66, or 3,300 sq ft. At 6 inches that is about 82.5 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.

Buying the stone

If you haul it yourself, a typical half-ton pickup should carry only about half a cubic yard of stone, well under what the bed looks like it can hold. #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 48x64 pole barn?

About 76.8 tons at 6 inches deep.

How many yards of #57 stone for a 48x64 pad?

About 56.89 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.

Should I put landscape fabric under the stone?

On soft or clay soil, a woven geotextile keeps stone from sinking into the dirt and makes the layer last longer.

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