How Much Recycled Concrete Aggregate for a 20x100 Driveway?

How much recycled concrete aggregate for a 20x100 driveway is a quick volume problem. 2,000 square feet at 4 inches comes to 24.69 cubic yards. Recycled concrete aggregate usually weighs about 1.2 to 1.4 tons per cubic yard, so plan on roughly 32.1 tons.

Volume and tonnage calculator →

The math for a 20x100 driveway

Area: 20 × 100 = 2,000 sq ft.
Depth in feet: 4 ÷ 12 = 0.333 ft.
Cubic feet: 2,000 × 0.333 = 666.7 cu ft.
Cubic yards: ÷ 27 = 24.69 yd³.
Tons: × 1.3 = 32.1 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	18.52	24.1	26.5
4 in	24.69	32.1	35.3
6 in	37.04	48.1	53.0

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 driveway

Strip sod and soft topsoil, grade for drainage and compact the subgrade before any stone goes down. Gravel drives last longer with a compacted base layer under the top stone and a slight crown so water runs off. Since the driveway carries car and truck traffic, 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. 35.3 tons may take more than one 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 driveway 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 20x25 area at 4 inches takes about 8.0 tons.
Weight used here: about 1.3 tons per cubic yard.

Mistakes that throw off the order

Ignoring the base. A thin surface layer over soft soil fails early no matter how much material is on top.
Skipping drainage. Water sitting under any surface softens the base and leads to ruts and potholes.
Forgetting that compaction shrinks loose material. A loose 4-inch spread of a dense-graded stone may finish closer to 3 inches after rolling.
Ordering exactly the math. Uneven ground and spillage nearly always need a little more than the flat calculation.

Questions people ask

How many tons of recycled concrete aggregate for a 20x100 driveway?

About 32.1 tons at 4 inches deep, or 35.3 tons with 10 percent extra.

How many cubic yards is a 20x100 driveway at 4 inches?

About 24.69 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 driveway?

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 20x100?

2,000 square feet.

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