How Much Crushed Stone for a 40x64 Pole Barn?
How much crushed stone for a 40x64 pole barn: about 66.4 tons for a 6-inch pad covering the 2,560 square foot footprint. Many builders extend the pad a foot or two past the walls, which adds material.
Volume and tonnage calculator →The math
- Area: 2,560.0 sq ft.
- Depth in feet: 6 ÷ 12 = 0.500 ft.
- Cubic yards: 2,560.0 × 0.500 ÷ 27 = 47.41 yd³.
- Tons: × about 1.4 tons per yard = 66.4 tons.
The crushed stone calculator does this for any size.
Related: How Much Gravel for a 40x64 Pole Barn?
Crushed stone needed by depth
| Depth | Cubic yards | Tons of crushed stone | Tons +10% |
|---|---|---|---|
| 4 in | 31.60 | 44.2 | 48.7 |
| 6 in | 47.41 | 66.4 | 73.0 |
| 8 in | 63.21 | 88.5 | 97.3 |
| 12 in | 94.81 | 132.7 | 146.0 |
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.
Related: How Much #57 Stone for a 40x64 Pole Barn?
Extending the pad past the walls
Many owners run the stone 1 foot beyond each wall: 42x66 feet, 2,772 sq ft, about 71.9 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
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. Ask your supplier for their own tons-per-yard number, since stone source and moisture change it.
Questions people ask
How many tons of crushed stone for a 40x64 pole barn?
About 66.4 tons at 6 inches deep.
How many yards of crushed stone for a 40x64 pad?
About 47.41 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.
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 Crushed Stone for a 40x40 Pole Barn?
- How Much Crushed Stone for a 40x60 Pole Barn?
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