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How Much Recycled Concrete Aggregate for a 10x12 Shed Base?

A 10 by 12 foot shed base is 120 square feet. How much recycled concrete aggregate for a 10x12 shed base depends on depth: at 4 inches it is about 1.48 cubic yards or 1.9 tons. Suppliers usually sell by the ton, so the tonnage is the number to give them.

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The math for a 10x12 shed base

  1. Area: 10 × 12 = 120 sq ft.
  2. Depth in feet: 4 ÷ 12 = 0.333 ft.
  3. Cubic feet: 120 × 0.333 = 40.0 cu ft.
  4. Cubic yards: ÷ 27 = 1.48 yd³.
  5. Tons: × 1.3 = 1.9 tons.

The volume and tonnage calculator does this for any size.

Recycled concrete aggregate needed by depth

DepthCubic yardsTons (approx.)Tons +10%
3 in1.111.41.6
4 in1.481.92.1
6 in2.222.93.2

About recycled concrete aggregate

Ask whether the recycled concrete has been screened for rebar and debris. Fresh-crushed concrete can also be alkaline, so keep it away from sensitive plantings and streams. If the yard sells by the cubic yard instead of the ton, use the cubic-yard column directly.

Preparing the shed base

Level the footprint, extend the stone a foot or so beyond the shed walls for drip and drainage, and compact in lifts. A timber or block border holds the pad shape. Since the shed base carries a shed floor frame, a little extra depth is cheap insurance.

Ordering tips

  • Round up. Compaction and uneven ground eat material. Adding about 10 percent is common.
  • Delivery size. 2.1 tons fits in a single typical dump truck load; small loads may carry a delivery fee. See how many tons of gravel in a dump truck.
  • Bulk vs bags. At this size bulk delivery is usually the practical choice.
  • Where it drops. Have the truck dump as close to the shed base as firm ground allows.

Good and poor uses for recycled concrete aggregate

Works well for:

  • Driveway and pad bases
  • Temporary construction entrances
  • Fill under slabs when compacted in lifts

Poor fit for:

  • Near ponds, streams or sensitive plants, since fresh crush can raise pH
  • Decorative top layers
  • Drainage layers, unless the product is clean and screened

Quick reference numbers

  • Per inch over 100 sq ft: about 0.40 tons of recycled concrete aggregate (0.31 cubic yards).
  • Per inch over 1,000 sq ft: about 4.0 tons.
  • Another size for comparison: a 12x24 area at 2 inches takes about 2.3 tons.
  • Weight used here: about 1.3 tons per cubic yard.

Where estimates go wrong

  • Mixing up cubic yards and tons. Yards are volume, tons are weight; convert with the product’s weight per yard.
  • Forgetting that compaction shrinks loose material. A loose 4-inch spread of a dense-graded stone may finish closer to 3 inches after rolling.
  • Measuring only the main rectangle. Aprons, turnouts and curved edges add real square footage.
  • Using inches as if they were feet. Depth has to be divided by 12 before you multiply; skipping that step inflates the order twelvefold.

Questions people ask

How many tons of recycled concrete aggregate for a 10x12 shed base?

About 1.9 tons at 4 inches deep, or 2.1 tons with 10 percent extra.

How many cubic yards is a 10x12 shed base at 4 inches?

About 1.48 cubic yards.

How much does a cubic yard of recycled concrete aggregate weigh?

Usually around 1.2 to 1.4 tons, depending on stone size, fines and moisture.

How deep should recycled concrete aggregate be for a shed base?

The table above shows 3 to 6 inches. Shallower depths suit top dressing; deeper depths suit new installs and heavier use.

How many square feet is 10x12?

120 square feet.

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