How Much Crusher Run for a 20x40 RV Pad?
How much crusher run for a 20x40 RV pad: about 23.0 tons at 6 inches deep. The pad covers 800 square feet, enough for most fifth wheels and Class A coaches.
Volume and tonnage calculator →The math
- Area: 800.0 sq ft.
- Depth in feet: 6 ÷ 12 = 0.500 ft.
- Cubic yards: 800.0 × 0.500 ÷ 27 = 14.81 yd³.
- Tons: × about 1.55 tons per yard = 23.0 tons.
The crushed stone calculator does this for any size.
Related: How Much Crusher Run for a 20x40 Parking Pad?
Crusher run needed by depth
| Depth | Cubic yards | Tons of crusher run | Tons +10% |
|---|---|---|---|
| 4 in | 9.88 | 15.3 | 16.8 |
| 6 in | 14.81 | 23.0 | 25.3 |
| 8 in | 19.75 | 30.6 | 33.7 |
| 12 in | 29.63 | 45.9 | 50.5 |
Depth for an RV pad
Plan on at least 6 inches of compacted stone. Heavier motorhomes, wet sites or soft soil call for 8 to 12 inches. Fabric under the stone stops it from pumping into the mud over time.
Related: How Much Crusher Run for a 20x40 Driveway?
Size and access
A 20-foot width gives comfortable room to open slide-outs and walk around the rig. Add a wider entry flare where the pad meets the driveway so you can swing in without cutting across the lawn.
Drainage
Crown the pad or slope it slightly so rain runs off rather than collecting under the rig. Keep the top an inch or two above surrounding grade.
Getting it delivered
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. Ask your supplier for their own tons-per-yard number, since stone source and moisture change it.
Questions people ask
How many tons of crusher run for a 20x40 RV pad?
About 23.0 tons at 6 inches deep.
How thick should an RV gravel pad be?
At least 6 inches compacted; 8 to 12 on soft soil.
Do I need fabric under an RV pad?
On soft or clay soil, a woven geotextile helps keep the stone from sinking.
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.
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
- 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 20x40 RV Pad?
- How Much Crushed Stone for a 20x40 RV Pad?
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