How Much Gravel for a 30x30 Pole Barn?
A 30 by 30 pole barn covers 900 square feet. Spread 6 inches deep, the pad takes about 16.67 cubic yards, which is roughly 23.3 tons of gravel. That answers how much gravel for a 30x30 pole barn for a typical floor base.
Volume and tonnage calculator →The math
- Area: 900.0 sq ft.
- Depth in feet: 6 ÷ 12 = 0.500 ft.
- Cubic yards: 900.0 × 0.500 ÷ 27 = 16.67 yd³.
- Tons: × about 1.4 tons per yard = 23.3 tons.
The gravel calculator does this for any size.
Related: How Much Crushed Stone for a 30x30 Pole Barn?
Gravel needed by depth
| Depth | Cubic yards | Tons of gravel | Tons +10% |
|---|---|---|---|
| 4 in | 11.11 | 15.6 | 17.1 |
| 6 in | 16.67 | 23.3 | 25.7 |
| 8 in | 22.22 | 31.1 | 34.2 |
| 12 in | 33.33 | 46.7 | 51.3 |
Pole barn pad depth
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.
Related: How Much #57 Stone for a 30x30 Pole Barn?
Extending the pad past the walls
Many owners run the stone 1 foot beyond each wall: 32x32 feet, 1,024 sq ft, about 26.5 tons at 6 inches. It keeps mud away from the doors and protects the post bases.
Build it in layers
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.
Getting it delivered
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 30x30 pole barn?
About 23.3 tons at 6 inches deep.
How many yards of gravel for a 30x30 pad?
About 16.67 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 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.
Related guides
- Gravel for a Pole Barn Floor: Best Stone, Depth and Tons
- How Much Does a Ton of Gravel Cover? Depth Chart
- Tons to Cubic Yards for Gravel: Conversion Chart
- Crushed Stone vs Gravel: Differences and Best Uses
- Geotextile Fabric for Driveways: Woven vs Nonwoven and How Much You Need
- Compacting a Driveway Gravel Base in Lifts
- How Much Gravel for a 24x36 Pole Barn?
- How Much Gravel for a 24x40 Pole Barn?
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