How Much Limestone Screenings for a 3x20 Walkway?
A 3 by 20 foot walkway is 60 square feet. How much limestone screenings for a 3x20 walkway depends on depth: at 3 inches it is about 0.56 cubic yards or 0.8 tons. Suppliers usually sell by the ton, so the tonnage is the number to give them.
Volume and tonnage calculator →The math for a 3x20 walkway
- Area: 3 × 20 = 60 sq ft.
- Depth in feet: 3 ÷ 12 = 0.250 ft.
- Cubic feet: 60 × 0.250 = 15.0 cu ft.
- Cubic yards: ÷ 27 = 0.56 yd³.
- Tons: × 1.4 = 0.8 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 | 0.19 | 0.3 | 0.3 |
| 2 in | 0.37 | 0.5 | 0.6 |
| 3 in | 0.56 | 0.8 | 0.9 |
About limestone screenings
Limestone screenings are the fine dust and chips left after crushing limestone. They pack very tight, which makes them a common setting bed for pavers and flagstone and a surface for paths. Weight per yard is a planning number; the scale ticket at the yard is the real one.
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. For foot traffic, 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. 0.9 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 0.8 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.
When to choose limestone screenings
Works well for:
- 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 14x28 area at 2 inches takes about 3.4 tons.
- Weight used here: about 1.4 tons per cubic yard.
Mistakes that throw off the order
- Forgetting that compaction shrinks loose material. A loose 4-inch spread of a dense-graded stone may finish closer to 3 inches after rolling.
- Skipping drainage. Water sitting under any surface softens the base and leads to ruts and potholes.
- Ordering exactly the math. Uneven ground and spillage nearly always need a little more than the flat calculation.
- Measuring only the main rectangle. Aprons, turnouts and curved edges add real square footage.
Questions people ask
How many tons of limestone screenings for a 3x20 walkway?
About 0.8 tons at 3 inches deep, or 0.9 tons with 10 percent extra.
How many cubic yards is a 3x20 walkway at 3 inches?
About 0.56 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 3x20?
60 square feet.
Related guides
- #10 Stone (Stone Dust): Size, Uses and How Many Tons
- 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
- How Much Limestone Screenings for a 3x10 Walkway?
- How Much Limestone Screenings for a 3x15 Walkway?
As an Amazon Associate, AsphaltTons.com earns from qualifying purchases. Product links below are sponsored.