How Much Gravel for a 50x80 Pole Barn?
A 50 by 80 pole barn covers 4,000 square feet. Spread 6 inches deep, the pad takes about 74.07 cubic yards, which is roughly 103.7 tons of gravel. That answers how much gravel for a 50x80 pole barn for a typical floor base.
Volume and tonnage calculator →The math
- Area: 4,000.0 sq ft.
- Depth in feet: 6 ÷ 12 = 0.500 ft.
- Cubic yards: 4,000.0 × 0.500 ÷ 27 = 74.07 yd³.
- Tons: × about 1.4 tons per yard = 103.7 tons.
The gravel calculator does this for any size.
Related: How Much Crushed Stone for a 50x80 Pole Barn?
Gravel needed by depth
| Depth | Cubic yards | Tons of gravel | Tons +10% |
|---|---|---|---|
| 4 in | 49.38 | 69.1 | 76.0 |
| 6 in | 74.07 | 103.7 | 114.1 |
| 8 in | 98.77 | 138.3 | 152.1 |
| 12 in | 148.15 | 207.4 | 228.1 |
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.
Related: How Much #57 Stone for a 50x80 Pole Barn?
Extending the pad past the walls
Adding 1 foot on every side makes the pad 52x82, or 4,264 sq ft. At 6 inches that is about 110.5 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
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. Ask your supplier for their own tons-per-yard number, since stone source and moisture change it.
Questions people ask
How many tons of gravel for a 50x80 pole barn?
About 103.7 tons at 6 inches deep.
How many yards of gravel for a 50x80 pad?
About 74.07 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 40x80 Pole Barn?
- How Much Gravel for a 48x64 Pole Barn?
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