How Much Gravel for a 12x35 RV Pad?
How much gravel for a 12x35 RV pad: about 10.9 tons at 6 inches deep. The pad covers 420 square feet, enough for a travel trailer or small motorhome.
Volume and tonnage calculator →The math
- Area: 420.0 sq ft.
- Depth in feet: 6 ÷ 12 = 0.500 ft.
- Cubic yards: 420.0 × 0.500 ÷ 27 = 7.78 yd³.
- Tons: × about 1.4 tons per yard = 10.9 tons.
The gravel calculator does this for any size.
Related: How Much Crushed Stone for a 12x35 RV Pad?
Gravel needed by depth
| Depth | Cubic yards | Tons of gravel | Tons +10% |
|---|---|---|---|
| 4 in | 5.19 | 7.3 | 8.0 |
| 6 in | 7.78 | 10.9 | 12.0 |
| 8 in | 10.37 | 14.5 | 16.0 |
| 12 in | 15.56 | 21.8 | 24.0 |
How thick to build it
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 12x35 RV 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.
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. Gravel is a broad label, so confirm whether the yard means crushed or rounded stone and whether it carries fines. Round up by about 10 percent for compaction and uneven ground.
Questions people ask
How many tons of gravel for a 12x35 RV pad?
About 10.9 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 gravel are in a cubic yard?
Roughly 1.4 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 Crushed Stone for a 12x30 RV Pad?
- How Much Crusher Run for a 12x30 RV Pad?
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