How Much Crusher Run for a 12x40 RV Pad?
How much crusher run for a 12x40 RV pad: about 13.8 tons at 6 inches deep. The pad covers 480 square feet, enough for most fifth wheels and Class A coaches.
Volume and tonnage calculator →The math
- Area: 480.0 sq ft.
- Depth in feet: 6 ÷ 12 = 0.500 ft.
- Cubic yards: 480.0 × 0.500 ÷ 27 = 8.89 yd³.
- Tons: × about 1.55 tons per yard = 13.8 tons.
The crushed stone calculator does this for any size.
Related: How Many Tons of Asphalt for a 12 by 40 RV Pad?
Crusher run needed by depth
| Depth | Cubic yards | Tons of crusher run | Tons +10% |
|---|---|---|---|
| 4 in | 5.93 | 9.2 | 10.1 |
| 6 in | 8.89 | 13.8 | 15.2 |
| 8 in | 11.85 | 18.4 | 20.2 |
| 12 in | 17.78 | 27.6 | 30.3 |
Depth for an RV pad
RVs put a lot of weight on a few tires and leveling jacks. A 6-inch compacted base suits most firm soils; soft or clay ground often needs 8 inches or more and a woven fabric underneath. Put jack pads or small concrete pads where the jacks land.
Related: How Much Crusher Run for a 12x40 Parking Pad?
Size and access
A 12-foot width gives tight but workable 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
Build the pad a little higher than the yard and slope it gently. Standing water under an RV softens the base and invites rust.
Getting it delivered
If you haul it yourself, a typical half-ton pickup should carry only about half a cubic yard of stone, well under what the bed looks like it can hold. 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.
Questions people ask
How many tons of crusher run for a 12x40 RV pad?
About 13.8 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 12x40 RV Pad?
- How Much Crushed Stone for a 12x40 RV Pad?
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