How Much #57 Stone for a 8x12 Shed Base?
How much #57 stone for a 8x12 shed base: at 4 inches deep you need about 1.19 cubic yards, which is roughly 1.6 tons at 1.35 tons per yard. The shed base covers 96 square feet, so every inch of depth adds about 0.30 yards.
Volume and tonnage calculator →The math for a 8x12 shed base
- Area: 8 × 12 = 96 sq ft.
- Depth in feet: 4 ÷ 12 = 0.333 ft.
- Cubic feet: 96 × 0.333 = 32.0 cu ft.
- Cubic yards: ÷ 27 = 1.19 yd³.
- Tons: × 1.35 = 1.6 tons.
The volume and tonnage calculator does this for any size.
#57 stone needed by depth
| Depth | Cubic yards | Tons (approx.) | Tons +10% |
|---|---|---|---|
| 2 in | 0.59 | 0.8 | 0.9 |
| 3 in | 0.89 | 1.2 | 1.3 |
| 4 in | 1.19 | 1.6 | 1.8 |
| 6 in | 1.78 | 2.4 | 2.6 |
About #57 stone
#57 stone is a clean crushed stone in roughly the 1/2 to 1 inch range with very few fines. It drains fast, which suits drainage layers and the top of a gravel drive, but it does not pack into a hard crust by itself. If the yard sells by the cubic yard instead of the ton, use the cubic-yard column directly.
Preparing the shed base
Level the footprint, extend the stone a foot or so beyond the shed walls for drip and drainage, and compact in lifts. A timber or block border holds the pad shape. Since the shed base carries a shed floor frame, a little extra depth is cheap insurance.
Ordering tips
- Round up. Compaction and uneven ground eat material. Adding about 10 percent is common.
- Delivery size. 1.8 tons fits in a single typical dump truck load; small loads may carry a delivery fee. See how many tons of gravel in a dump truck.
- Bulk vs bags. At this size bulk delivery is usually the practical choice.
- Where it drops. Have the truck dump as close to the shed base as firm ground allows.
When to choose #57 stone
Good uses:
- French drains and drainage layers
- The top course of a gravel driveway
- Under sheds where water needs to drain away
Poor fit for:
- A standalone base, since it does not pack hard without fines
- Paver setting beds
- Walk paths meant for strollers or wheelchairs
Quick reference numbers
- Per inch over 100 sq ft: about 0.42 tons of #57 stone (0.31 cubic yards).
- Per inch over 1,000 sq ft: about 4.2 tons.
- Another size for comparison: a 8x16 area at 4 inches takes about 2.1 tons.
- Weight used here: about 1.35 tons per cubic yard.
Where estimates go wrong
- Forgetting that compaction shrinks loose material. A loose 4-inch spread of a dense-graded stone may finish closer to 3 inches after rolling.
- Ignoring the base. A thin surface layer over soft soil fails early no matter how much material is on top.
- Measuring only the main rectangle. Aprons, turnouts and curved edges add real square footage.
- Assuming every supplier uses the same weight. Two yards selling the same product name can quote different tons per yard.
Questions people ask
How many tons of #57 stone for a 8x12 shed base?
About 1.6 tons at 4 inches deep, or 1.8 tons with 10 percent extra.
How many cubic yards is a 8x12 shed base at 4 inches?
About 1.19 cubic yards.
How much does a cubic yard of #57 stone weigh?
Usually around 1.3 to 1.45 tons, depending on stone size, fines and moisture.
How deep should #57 stone be for a shed base?
The table above shows 2 to 6 inches. Shallower depths suit top dressing; deeper depths suit new installs and heavier use.
How many square feet is 8x12?
96 square feet.
Related guides
- Number 57 Stone: Size, Weight, Uses, and Coverage
- Tons to Cubic Yards for Gravel: Conversion Chart
- How Many Tons of Gravel in a Dump Truck? Loads and Coverage
- How Much Does a Ton of Gravel Cover? Depth Chart
- How Much #57 Stone for a 8x8 Shed Base?
- How Much #57 Stone for a 8x10 Shed Base?
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