How Much Limestone Screenings for a 3x15 Walkway?

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

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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: × 1.4 = 0.6 tons.

The volume and tonnage calculator does this for any size.

Limestone screenings 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

About limestone screenings

Screenings hold moisture and can crust over. Use them in thin layers over a compacted stone base instead of as a thick layer on their own. If the yard sells by the cubic yard instead of the ton, use the cubic-yard column directly.

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 limestone screenings

Best suited to:

Paver and flagstone setting beds
Firm walking paths
Top-dressing a compacted stone base

Less suited to:

Deep layers on their own
Low spots that collect water
Under heavy vehicle traffic without a base

Quick reference numbers

Per inch over 100 sq ft: about 0.43 tons of limestone screenings (0.31 cubic yards).
Per inch over 1,000 sq ft: about 4.3 tons.
Another size for comparison: a 8x16 area at 3 inches takes about 1.7 tons.
Weight used here: about 1.4 tons per cubic yard.

Mistakes that throw off the order

Measuring only the main rectangle. Aprons, turnouts and curved edges add real square footage.
Using inches as if they were feet. Depth has to be divided by 12 before you multiply; skipping that step inflates the order twelvefold.
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.

Questions people ask

How many tons of limestone screenings 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 limestone screenings weigh?

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

How deep should limestone screenings be for a walkway?

The table above shows 1 to 3 inches. Shallower depths suit top dressing; deeper depths suit new installs and heavier use.

How many square feet is 3x15?

45 square feet.

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