Recycled Concrete Aggregate for a 18x24 Parking Pad
How much recycled concrete aggregate for a 18x24 parking pad is a quick volume problem. 432 square feet at 4 inches comes to 5.33 cubic yards. Recycled concrete aggregate usually weighs about 1.2 to 1.4 tons per cubic yard, so plan on roughly 6.9 tons.
Volume and tonnage calculator →The math for a 18x24 parking pad
- Area: 18 × 24 = 432 sq ft.
- Depth in feet: 4 ÷ 12 = 0.333 ft.
- Cubic feet: 432 × 0.333 = 144.0 cu ft.
- Cubic yards: ÷ 27 = 5.33 yd³.
- Tons: × 1.3 = 6.9 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 | 4.00 | 5.2 | 5.7 |
| 4 in | 5.33 | 6.9 | 7.6 |
| 6 in | 8.00 | 10.4 | 11.4 |
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 parking pad
Dig out organic soil, compact the subgrade and set an edge so the stone does not migrate onto the lawn. A pad that holds parked weight for long periods benefits from a dense base under the surface stone. Since the parking pad carries parked vehicles, 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. 7.6 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 parking pad 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
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 15x30 area at 2 inches takes about 3.6 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.
- Forgetting that compaction shrinks loose material. A loose 4-inch spread of a dense-graded stone may finish closer to 3 inches after rolling.
- Mixing up cubic yards and tons. Yards are volume, tons are weight; convert with the product’s weight per yard.
- Skipping drainage. Water sitting under any surface softens the base and leads to ruts and potholes.
Questions people ask
How many tons of recycled concrete aggregate for a 18x24 parking pad?
About 6.9 tons at 4 inches deep, or 7.6 tons with 10 percent extra.
How many cubic yards is a 18x24 parking pad at 4 inches?
About 5.33 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 parking pad?
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 18x24?
432 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
- Recycled Concrete Aggregate for a 16x50 Parking Pad
- Recycled Concrete Aggregate for a 18x20 Parking Pad
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