How Much Recycled Concrete Aggregate for a 6x8 Shed Base?

How much recycled concrete aggregate for a 6x8 shed base is a quick volume problem. 48 square feet at 4 inches comes to 0.59 cubic yards. Recycled concrete aggregate usually weighs about 1.2 to 1.4 tons per cubic yard, so plan on roughly 0.8 tons.

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The math for a 6x8 shed base

Area: 6 × 8 = 48 sq ft.
Depth in feet: 4 ÷ 12 = 0.333 ft.
Cubic feet: 48 × 0.333 = 16.0 cu ft.
Cubic yards: ÷ 27 = 0.59 yd³.
Tons: × 1.3 = 0.8 tons.

The volume and tonnage calculator does this for any size.

Recycled concrete aggregate needed by depth

Depth	Cubic yards	Tons (approx.)	Tons +10%
3 in	0.44	0.6	0.6
4 in	0.59	0.8	0.8
6 in	0.89	1.2	1.3

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. Ask your supplier for their own tons-per-yard figure, since stone source and moisture shift it.

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. This shed base sees a shed floor frame, so match the depth to that load rather than to the minimum.

Ordering tips

Round up. Compaction and uneven ground eat material. Adding about 10 percent is common.
Delivery size. 0.8 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 about 0.8 tons this job is small enough that bagged material could work; a 0.5 cubic foot bag holds about 1/54 of a yard, so compare the bag count with a bulk minimum.
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

Best suited to:

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

Think twice 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 3 inches takes about 3.5 tons.
Weight used here: about 1.3 tons per cubic yard.

Common estimating mistakes

Skipping drainage. Water sitting under any surface softens the base and leads to ruts and potholes.
Measuring only the main rectangle. Aprons, turnouts and curved edges add real square footage.
Ordering exactly the math. Uneven ground and spillage nearly always need a little more than the flat calculation.
Mixing up cubic yards and tons. Yards are volume, tons are weight; convert with the product’s weight per yard.

Questions people ask

How many tons of recycled concrete aggregate for a 6x8 shed base?

About 0.8 tons at 4 inches deep, or 0.8 tons with 10 percent extra.

How many cubic yards is a 6x8 shed base at 4 inches?

About 0.59 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 6x8?

48 square feet.

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