How Much Sand for a 3x15 Walkway?

How much sand for a 3x15 walkway is a quick volume problem. 45 square feet at 3 inches comes to 0.42 cubic yards. Sand usually weighs about 1.3 to 1.5 dry tons per cubic yard, so plan on roughly 0.6 tons.

Volume and tonnage calculator →

The math for a 3x15 walkway

Area: 3 × 15 = 45 sq ft.
Depth in feet: 3 ÷ 12 = 0.250 ft.
Cubic feet: 45 × 0.250 = 11.2 cu ft.
Cubic yards: ÷ 27 = 0.42 yd³.
Tons: × 1.35 = 0.6 tons.

The volume and tonnage calculator does this for any size.

Sand needed by depth

Depth	Cubic yards	Tons (approx.)	Tons +10%
1 in	0.14	0.2	0.2
2 in	0.28	0.4	0.4
3 in	0.42	0.6	0.6
4 in	0.56	0.8	0.8

About sand

Sand weight changes a lot with moisture. Damp sand can weigh noticeably more per yard than dry sand, so a ton of wet sand covers less area than the same ton dry. Ask your supplier for their own tons-per-yard figure, since stone source and moisture shift it.

Preparing the walkway

Dig the path a few inches below grade, compact the bottom, add fabric if needed and install edging on both sides so the material stays on the walk. This walkway sees foot traffic, so match the depth to that load rather than to the minimum.

Ordering tips

Round up. Compaction and uneven ground eat material. Adding about 10 percent is common.
Delivery size. 0.6 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 about 0.6 tons this job is small enough that bagged material could work; a 0.5 cubic foot bag holds about 1/54 of a yard, so compare the bag count with a bulk minimum.
Where it drops. Have the truck dump as close to the walkway as firm ground allows.

Good and poor uses for sand

Best suited to:

Paver and flagstone bedding
Leveling under above-ground pools (with the right product)
Filling joints and backfilling pipe

Less suited to:

Driveway bases, since sand shifts under load
Steep areas exposed to runoff
Thick layers under pavers, which settle unevenly

Quick reference numbers

Per inch over 100 sq ft: about 0.42 tons of sand (0.31 cubic yards).
Per inch over 1,000 sq ft: about 4.2 tons.
Another size for comparison: a 12x24 area at 3 inches takes about 3.6 tons.
Weight used here: about 1.35 tons per cubic yard.

Common estimating mistakes

Ignoring the base. A thin surface layer over soft soil fails early no matter how much material is on top.
Assuming every supplier uses the same weight. Two yards selling the same product name can quote different tons per yard.
Mixing up cubic yards and tons. Yards are volume, tons are weight; convert with the product’s weight per yard.
Forgetting that compaction shrinks loose material. A loose 4-inch spread of a dense-graded stone may finish closer to 3 inches after rolling.

Questions people ask

How many tons of sand for a 3x15 walkway?

About 0.6 tons at 3 inches deep, or 0.6 tons with 10 percent extra.

How many cubic yards is a 3x15 walkway at 3 inches?

About 0.42 cubic yards.

How much does a cubic yard of sand weigh?

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

How deep should sand be for a walkway?

The table above shows 1 to 4 inches. Shallower depths suit top dressing; deeper depths suit new installs and heavier use.

How many square feet is 3x15?

45 square feet.

As an Amazon Associate, AsphaltTons.com earns from qualifying purchases. Product links below are sponsored.