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How Much Crushed Stone for a 16x40 RV Pad?

An RV parks for weeks at a time, so the pad needs real depth. A 16 by 40 foot pad at 6 inches is 11.85 cubic yards, about 16.6 tons of crushed stone, for how much crushed stone for a 16x40 RV pad.

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The math

  1. Area: 640.0 sq ft.
  2. Depth in feet: 6 ÷ 12 = 0.500 ft.
  3. Cubic yards: 640.0 × 0.500 ÷ 27 = 11.85 yd³.
  4. Tons: × about 1.4 tons per yard = 16.6 tons.

The crushed stone calculator does this for any size.

Crushed stone needed by depth

DepthCubic yardsTons of crushed stoneTons +10%
4 in7.9011.112.2
6 in11.8516.618.3
8 in15.8022.124.3
12 in23.7033.236.5

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

A 16-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

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

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. 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 16x40 RV pad?

About 16.6 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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