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How Much Crushed Stone for a 30x48 Pole Barn?

How much crushed stone for a 30x48 pole barn: about 37.3 tons for a 6-inch pad covering the 1,440 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: 1,440.0 sq ft.
  2. Depth in feet: 6 ÷ 12 = 0.500 ft.
  3. Cubic yards: 1,440.0 × 0.500 ÷ 27 = 26.67 yd³.
  4. Tons: × about 1.4 tons per yard = 37.3 tons.

The crushed stone calculator does this for any size.

Crushed stone needed by depth

DepthCubic yardsTons of crushed stoneTons +10%
4 in17.7824.927.4
6 in26.6737.341.1
8 in35.5649.854.8
12 in53.3374.782.1

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 32x50, or 1,600 sq ft. At 6 inches that is about 41.5 tons. A wider apron sheds water away from the posts and gives the eave drip a place to land.

Layering the base

Remove sod and organic soil first. Compact the subgrade, then place and compact the stone in thin lifts. If the barn floor will be stone permanently, finish with a material that has fines so it packs firm.

Ordering and delivery

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. Crushed stone has angular faces that lock together under a compactor, which is why it holds a pad shape. Round up by about 10 percent for compaction and uneven ground.

Questions people ask

How many tons of crushed stone for a 30x48 pole barn?

About 37.3 tons at 6 inches deep.

How many yards of crushed stone for a 30x48 pad?

About 26.67 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 crushed stone are in a cubic yard?

Roughly 1.4 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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