Free construction quantity tool

Crushed Stone Base
Tonnage Calculator

Build a roadway quantity from pavement width, two matching shoulders, and the outside base keyout triangles. The calculation stays in your browser.

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Roadway segments

Segment 01Name OptionalLength

Enter length.Pavement width (EOP to EOP)

Enter pavement width.Shoulder width (each side)

Enter shoulder width.Shoulder slope (down)

Enter shoulder slope.Side slope

H:1V

Enter side slope.Compacted thickness

Enter compacted thickness.

Tons per cubic yard

tons/CY

Editable project-wide conversion factor.Waste / overrun

Applied after all segment quantities are totaled.

US customary

Enter the full pavement width, one shoulder width used on both sides, the shoulder and side slopes, and compacted thickness.

Transparent method

The base bottom follows the pavement and shoulder surfaces. Beyond each of the two shoulders, the base tapers to the side slope as an equal triangle.

01
Keyout run per sideThickness in feet ÷ (1 ÷ side slope H:V − shoulder slope)
02
Equivalent width per sideTriangle area ÷ thickness = keyout run ÷ 2
03
Effective base widthPavement width + 2 × shoulder width + 2 × equivalent keyout width
04
Order tonsLength × effective width × thickness ÷ 27 × tons/CY × (1 + waste %)

ESTIMATING AID

The responsible project professional must verify dimensions, material properties, construction allowances, quantities, and purchasing requirements.