How Much Gravel for a 16x50 Parking Pad?

How much gravel for a 16x50 parking pad: at 4 inches deep you need about 9.88 cubic yards, which is roughly 13.8 tons at 1.4 tons per yard. The parking pad covers 800 square feet, so every inch of depth adds about 2.47 yards.

Volume and tonnage calculator →

The math for a 16x50 parking pad

Area: 16 × 50 = 800 sq ft.
Depth in feet: 4 ÷ 12 = 0.333 ft.
Cubic feet: 800 × 0.333 = 266.7 cu ft.
Cubic yards: ÷ 27 = 9.88 yd³.
Tons: × 1.4 = 13.8 tons.

The volume and tonnage calculator does this for any size.

Gravel needed by depth

Depth	Cubic yards	Tons (approx.)	Tons +10%
2 in	4.94	6.9	7.6
3 in	7.41	10.4	11.4
4 in	9.88	13.8	15.2
6 in	14.81	20.7	22.8

About gravel

Because ’gravel’ covers so many products, the weight per yard moves with stone size and how much fine material is in the pile. Rounded stone with no fines rolls under tires; crushed stone with fines locks together. Weight per yard is a planning number; the scale ticket at the yard is the real one.

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. For parked vehicles, 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. 15.2 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 parking pad as firm ground allows.

Good and poor uses for gravel

Good uses:

Rural driveways and lanes where low upfront cost matters
Drainage areas and around downspouts
Temporary access while a site is under construction

Less suited to:

Steep slopes, where loose stone washes downhill
Spots plowed often, since plows push gravel into the lawn
Areas next to doors, because stone tracks inside

Quick reference numbers

Per inch over 100 sq ft: about 0.43 tons of gravel (0.31 cubic yards).
Per inch over 1,000 sq ft: about 4.3 tons.
Another size for comparison: a 15x30 area at 4 inches takes about 7.8 tons.
Weight used here: about 1.4 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.
Ignoring the base. A thin surface layer over soft soil fails early no matter how much material is on top.
Using inches as if they were feet. Depth has to be divided by 12 before you multiply; skipping that step inflates the order twelvefold.

Questions people ask

How many tons of gravel for a 16x50 parking pad?

About 13.8 tons at 4 inches deep, or 15.2 tons with 10 percent extra.

How many cubic yards is a 16x50 parking pad at 4 inches?

About 9.88 cubic yards.

How much does a cubic yard of gravel weigh?

Usually around 1.3 to 1.5 tons, depending on stone size, fines and moisture.

How deep should gravel be for a parking pad?

The table above shows 2 to 6 inches. Shallower depths suit top dressing; deeper depths suit new installs and heavier use.

How many square feet is 16x50?

800 square feet.

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