How Much Crusher Run for a 12x20 Carport?
How much crusher run for a 12x20 carport: about 4.6 tons at 4 inches deep and 6.9 tons at 6 inches, over 240 square feet.
Volume and tonnage calculator →The math
- Area: 240.0 sq ft.
- Depth in feet: 4 ÷ 12 = 0.333 ft.
- Cubic yards: 240.0 × 0.333 ÷ 27 = 2.96 yd³.
- Tons: × about 1.55 tons per yard = 4.6 tons.
The crushed stone calculator does this for any size.
Related: How Much Crusher Run for a 12x20 Patio?
Crusher run needed by depth
| Depth | Cubic yards | Tons of crusher run | Tons +10% |
|---|---|---|---|
| 4 in | 2.96 | 4.6 | 5.1 |
| 6 in | 4.44 | 6.9 | 7.6 |
| 8 in | 5.93 | 9.2 | 10.1 |
Building the carport base
Most steel carports can anchor into a compacted gravel pad with auger or rebar anchors. Make the pad slightly larger than the frame and keep it level so the frame goes up square.
Related: How Much Crusher Run for a 12x24 Carport?
Depth for vehicles
Four inches works on firm ground for cars. Six inches is safer for trucks, heavy SUVs or soft soil.
Buying the stone
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. Crusher run mixes stone and stone dust, so it packs nearly solid when compacted in layers. The scale ticket is the real weight; tons per yard here is a planning figure.
Planning the cost
Quarries and landscape suppliers set their own prices, and they change by region and season. Get the price per ton, the delivery fee and the minimum order. If two products will both work, compare cost per square foot at your depth rather than cost per ton.
Tools for the job
A flat shovel, a steel rake, a wheelbarrow and a rented plate compactor cover most residential pads. A landscape rake or the back of a rake levels the top layer, and a long straightedge or a level string shows high and low spots before the final pass.
Questions people ask
How many tons of crusher run for a 12x20 carport?
About 4.6 tons at 4 inches or 6.9 at 6 inches.
Can a carport sit on gravel?
Many metal carports anchor into compacted gravel with ground anchors; check your kit.
How many tons of crusher run are in a cubic yard?
Roughly 1.55 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
- 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 12x20 Carport?
- How Much Crushed Stone for a 12x20 Carport?
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