OpenSpecEngineering

Open data for a field built on precision

Earthwork Load Factors & Swell

MaterialLoad factor (bank / loose)Loose / bank volume, calculatedSwell (%), calculated

Load factor from Caterpillar [1]; loose/bank = 1/LF and swell = 1/LF − 1 are calculated. Shrinkage depends on the compaction specified, so the source gives none.

Compacted Soil Unit Weights

MaterialUSCS groupsUnit weight (pcf)Unit weight (kN/m³)

AASHTO Table 3.5.1-1 [2], given in kcf; kN/m³ converted exactly. The USCS groups are the ones the site’s soil presets assign to each row.

Construction Material Densities

MaterialDensity (kg/m³)Density (lb/ft³)Unit weight (kN/m³), calculatedSource

Density in kg/m³ as the source gives it; lb/ft³ converted exactly; unit weight γ = ρg0 calculated. “Solid grains” rows are the mineral itself; a stockpile or bed weighs less by its void fraction.

Use these in the Earthwork Shrink / Swell and Weight/Mass from Material + Volume calculators.