How Much Crushed Stone for an 18x24 Carport?
How much crushed stone for an 18x24 carport: about 7.5 tons at 4 inches deep and 11.2 tons at 6 inches, over 432 square feet.
Volume and tonnage calculator →The math
- Area: 432.0 sq ft.
- Depth in feet: 4 ÷ 12 = 0.333 ft.
- Cubic yards: 432.0 × 0.333 ÷ 27 = 5.33 yd³.
- Tons: × about 1.4 tons per yard = 7.5 tons.
The crushed stone calculator does this for any size.
Related: How Much Crusher Run for an 18x24 Carport?
Crushed stone needed by depth
| Depth | Cubic yards | Tons of crushed stone | Tons +10% |
|---|---|---|---|
| 4 in | 5.33 | 7.5 | 8.2 |
| 6 in | 8.00 | 11.2 | 12.3 |
| 8 in | 10.67 | 14.9 | 16.4 |
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 Crushed Stone for a 18x24 Parking Pad?
How deep
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. Crushed stone has angular faces that lock together under a compactor, which is why it holds a pad shape. The scale ticket is the real weight; tons per yard here is a planning figure.
Planning the cost
Stone is usually priced per ton or per cubic yard, and delivery is often a separate charge based on distance. A full truckload can cost less per ton than a partial one, so it can pay to combine projects. Ask whether the quote includes tax, delivery and any small-load fee before you compare yards.
Measuring the area
Use a long tape and measure each side twice. If the ground slopes, measure depth at the high and low ends and average them. Irregular outlines can be broken into simple rectangles, triangles and circles; add the pieces for the total square footage before converting to tons.
Questions people ask
How many tons of crushed stone for an 18x24 carport?
About 7.5 tons at 4 inches or 11.2 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 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
- 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 Crusher Run for an 18x20 Carport?
- How Much Gravel for an 18x24 Carport?
As an Amazon Associate, AsphaltTons.com earns from qualifying purchases. Product links below are sponsored.