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How Much Crushed Stone for a 12x35 RV Pad?

An RV parks for weeks at a time, so the pad needs real depth. A 12 by 35 foot pad at 6 inches is 7.78 cubic yards, about 10.9 tons of crushed stone, for how much crushed stone for a 12x35 RV pad.

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The math

  1. Area: 420.0 sq ft.
  2. Depth in feet: 6 ÷ 12 = 0.500 ft.
  3. Cubic yards: 420.0 × 0.500 ÷ 27 = 7.78 yd³.
  4. Tons: × about 1.4 tons per yard = 10.9 tons.

The crushed stone calculator does this for any size.

Crushed stone needed by depth

DepthCubic yardsTons of crushed stoneTons +10%
4 in5.197.38.0
6 in7.7810.912.0
8 in10.3714.516.0
12 in15.5621.824.0

How thick to build it

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.

Size and access

Measure your rig with slides out and add a few feet. At 12 feet wide, check that slide-outs and the awning clear. Leave a turning area at the entry.

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.

Ordering and delivery

Most quarries and landscape yards deliver by the ton; ask whether there is a minimum and a delivery fee, and where the driver can dump without damaging your lawn. 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.

Questions people ask

How many tons of crushed stone 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 crushed stone 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.

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