Recycled Concrete Aggregate for a 18x30 Parking Pad
How much recycled concrete aggregate for a 18x30 parking pad: at 4 inches deep you need about 6.67 cubic yards, which is roughly 8.7 tons at 1.3 tons per yard. The parking pad covers 540 square feet, so every inch of depth adds about 1.67 yards.
Volume and tonnage calculator →The math for a 18x30 parking pad
- Area: 18 × 30 = 540 sq ft.
- Depth in feet: 4 ÷ 12 = 0.333 ft.
- Cubic feet: 540 × 0.333 = 180.0 cu ft.
- Cubic yards: ÷ 27 = 6.67 yd³.
- Tons: × 1.3 = 8.7 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 | 5.00 | 6.5 | 7.2 |
| 4 in | 6.67 | 8.7 | 9.5 |
| 6 in | 10.00 | 13.0 | 14.3 |
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. If the yard sells by the cubic yard instead of the ton, use the cubic-yard column directly.
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. 9.5 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.
When to choose recycled concrete aggregate
Best suited to:
- 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 15x30 area at 3 inches takes about 5.4 tons.
- Weight used here: about 1.3 tons per cubic yard.
Common estimating mistakes
- Assuming every supplier uses the same weight. Two yards selling the same product name can quote different tons per yard.
- Using inches as if they were feet. Depth has to be divided by 12 before you multiply; skipping that step inflates the order twelvefold.
- Skipping drainage. Water sitting under any surface softens the base and leads to ruts and potholes.
- 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 18x30 parking pad?
About 8.7 tons at 4 inches deep, or 9.5 tons with 10 percent extra.
How many cubic yards is a 18x30 parking pad at 4 inches?
About 6.67 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 18x30?
540 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 18x20 Parking Pad
- Recycled Concrete Aggregate for a 18x24 Parking Pad
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