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How Much Crushed Stone for a 14x45 RV Pad?

How much crushed stone for a 14x45 RV pad: about 16.3 tons at 6 inches deep. The pad covers 630 square feet, enough for most fifth wheels and Class A coaches.

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The math

  1. Area: 630.0 sq ft.
  2. Depth in feet: 6 ÷ 12 = 0.500 ft.
  3. Cubic yards: 630.0 × 0.500 ÷ 27 = 11.67 yd³.
  4. Tons: × about 1.4 tons per yard = 16.3 tons.

The crushed stone calculator does this for any size.

Crushed stone needed by depth

DepthCubic yardsTons of crushed stoneTons +10%
4 in7.7810.912.0
6 in11.6716.318.0
8 in15.5621.824.0
12 in23.3332.735.9

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.

Size and access

A 14-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

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. Round up by about 10 percent for compaction and uneven ground.

Questions people ask

How many tons of crushed stone for a 14x45 RV pad?

About 16.3 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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