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How Much Gravel for a 24x30 Pole Barn?

A 24 by 30 pole barn covers 720 square feet. Spread 6 inches deep, the pad takes about 13.33 cubic yards, which is roughly 18.7 tons of gravel. That answers how much gravel for a 24x30 pole barn for a typical floor base.

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The math

  1. Area: 720.0 sq ft.
  2. Depth in feet: 6 ÷ 12 = 0.500 ft.
  3. Cubic yards: 720.0 × 0.500 ÷ 27 = 13.33 yd³.
  4. Tons: × about 1.4 tons per yard = 18.7 tons.

The gravel calculator does this for any size.

Gravel needed by depth

DepthCubic yardsTons of gravelTons +10%
4 in8.8912.413.7
6 in13.3318.720.5
8 in17.7824.927.4
12 in26.6737.341.1

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

Many owners run the stone 1 foot beyond each wall: 26x32 feet, 832 sq ft, about 21.6 tons at 6 inches. It keeps mud away from the doors and protects the post bases.

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.

Buying the stone

Small dump trucks commonly carry around 5 to 10 tons and tri-axles more, but loads vary by truck and state, so ask the yard what fits in one trip. Gravel is a broad label, so confirm whether the yard means crushed or rounded stone and whether it carries fines. The scale ticket is the real weight; tons per yard here is a planning figure.

Questions people ask

How many tons of gravel for a 24x30 pole barn?

About 18.7 tons at 6 inches deep.

How many yards of gravel for a 24x30 pad?

About 13.33 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 gravel 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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