How Much Recycled Concrete Aggregate for a 6x20 Shed Base?
A 6 by 20 foot shed base is 120 square feet. How much recycled concrete aggregate for a 6x20 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.
Volume and tonnage calculator →The math for a 6x20 shed base
- Area: 6 × 20 = 120 sq ft.
- Depth in feet: 4 ÷ 12 = 0.333 ft.
- Cubic feet: 120 × 0.333 = 40.0 cu ft.
- Cubic yards: ÷ 27 = 1.48 yd³.
- Tons: × 1.3 = 1.9 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 | 1.11 | 1.4 | 1.6 |
| 4 in | 1.48 | 1.9 | 2.1 |
| 6 in | 2.22 | 2.9 | 3.2 |
About recycled concrete aggregate
Recycled concrete aggregate is crushed old concrete. It compacts well and often costs less than virgin stone, which makes it a common driveway and pad base. 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. For a shed floor frame, the depths in the table above are a reasonable starting range.
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.
When to choose recycled concrete aggregate
Works well for:
- Driveway and pad bases
- Temporary construction entrances
- Fill under slabs when compacted in lifts
Less suited to:
- 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 20x25 area at 2 inches takes about 4.0 tons.
- Weight used here: about 1.3 tons per cubic yard.
Mistakes that throw off the order
- Skipping drainage. Water sitting under any surface softens the base and leads to ruts and potholes.
- Using inches as if they were feet. Depth has to be divided by 12 before you multiply; skipping that step inflates the order twelvefold.
- 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.
Questions people ask
How many tons of recycled concrete aggregate for a 6x20 shed base?
About 1.9 tons at 4 inches deep, or 2.1 tons with 10 percent extra.
How many cubic yards is a 6x20 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 6x20?
120 square feet.
Related guides
- Crushed Stone vs Gravel: Differences and Best Uses
- Tons to Cubic Yards for Gravel: Conversion Chart
- How Many Tons of Gravel in a Dump Truck? Loads and Coverage
- How Much Does a Ton of Gravel Cover? Depth Chart
- How Much Recycled Concrete Aggregate for a 6x14 Shed Base?
- How Much Recycled Concrete Aggregate for a 6x16 Shed Base?
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