How Much #57 Stone for a 50x80 Pole Barn?
How much #57 stone for a 50x80 pole barn: about 100.0 tons for a 6-inch pad covering the 4,000 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: 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 1.35 tons per yard = 100.0 tons.
The crushed stone calculator does this for any size.
Related: How Much Gravel for a 50x80 Pole Barn?
#57 stone needed by depth
| Depth | Cubic yards | Tons of #57 stone | Tons +10% |
|---|---|---|---|
| 4 in | 49.38 | 66.7 | 73.3 |
| 6 in | 74.07 | 100.0 | 110.0 |
| 8 in | 98.77 | 133.3 | 146.7 |
| 12 in | 148.15 | 200.0 | 220.0 |
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 Crushed 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 106.6 tons. A wider apron sheds water away from the posts and gives the eave drip a place to land.
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.
Buying the stone
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. #57 is a washed stone of roughly 1/2 to 1 inch with few fines; it drains fast but stays a little loose on its own. Round up by about 10 percent for compaction and uneven ground.
Questions people ask
How many tons of #57 stone for a 50x80 pole barn?
About 100.0 tons at 6 inches deep.
How many yards of #57 stone 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 #57 stone are in a cubic yard?
Roughly 1.35 tons for planning, but suppliers vary with stone size and moisture.
Do I need to compact it?
Yes for anything that carries weight. Compact in lifts of a few inches with a plate compactor.
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 #57 Stone for a 40x80 Pole Barn?
- How Much #57 Stone for a 48x64 Pole Barn?
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