How Much Crusher Run for a 12x8 Shed Base?
How much crusher run for a 12x8 shed base: at 4 inches deep you need about 1.19 cubic yards, which is roughly 1.8 tons at 1.55 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 12x8 shed base
- Area: 12 × 8 = 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: × 1.55 = 1.8 tons.
The volume and tonnage calculator does this for any size.
Crusher run needed by depth
| Depth | Cubic yards | Tons (approx.) | Tons +10% |
|---|---|---|---|
| 3 in | 0.89 | 1.4 | 1.5 |
| 4 in | 1.19 | 1.8 | 2.0 |
| 6 in | 1.78 | 2.8 | 3.0 |
| 8 in | 2.37 | 3.7 | 4.0 |
About crusher run
The fines in crusher run fill the gaps between stones, so it weighs more per yard than clean stone once compacted. Plan on rolling or plate-compacting it in lifts. Weight per yard is a planning number; the scale ticket at the yard is the real one.
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. 2.0 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.
Good and poor uses for crusher run
Works well for:
- Base under asphalt, pavers or concrete
- Gravel drives that need a firm, packed surface
- Shed pads and equipment pads
Poor fit for:
- Drainage layers, since the fines slow water
- Decorative beds
- Spots where you want water to soak straight through
Quick reference numbers
- Per inch over 100 sq ft: about 0.48 tons of crusher run (0.31 cubic yards).
- Per inch over 1,000 sq ft: about 4.8 tons.
- Another size for comparison: a 12x24 area at 2 inches takes about 2.8 tons.
- Weight used here: about 1.55 tons per cubic yard.
Common estimating mistakes
- Measuring only the main rectangle. Aprons, turnouts and curved edges add real square footage.
- Ordering exactly the math. Uneven ground and spillage nearly always need a little more than the flat calculation.
- Using inches as if they were feet. Depth has to be divided by 12 before you multiply; skipping that step inflates the order twelvefold.
- Skipping drainage. Water sitting under any surface softens the base and leads to ruts and potholes.
Questions people ask
How many tons of crusher run for a 12x8 shed base?
About 1.8 tons at 4 inches deep, or 2.0 tons with 10 percent extra.
How many cubic yards is a 12x8 shed base at 4 inches?
About 1.19 cubic yards.
How much does a cubic yard of crusher run weigh?
Usually around 1.5 to 1.7 compacted tons, depending on stone size, fines and moisture.
How deep should crusher run be for a shed base?
The table above shows 3 to 8 inches. Shallower depths suit top dressing; deeper depths suit new installs and heavier use.
How many square feet is 12x8?
96 square feet.
Related guides
- Crushed Stone vs Gravel: Differences and Best Uses
- 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 Crusher Run for a 10x20 Shed Base?
- How Much Crusher Run for a 10x24 Shed Base?
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