Earth Quantities Hauled
Posted in Soil Engineering |
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When soils are excavated, they increase in volume, or swell, because of an increase in voids:
Vb = Vb L = ( 100 / ( 100 + % swell ) ) VL
where
Vb = original volume, yd3 (m3), or bank yards
VL = loaded volume, yd3 (m3), or loose yards
L = load factor
When soils are compacted, they decrease in volume:
Vc = Vb S
where
Vc = compacted volume, yd3 (m3)
S = shrinkage factor.
Bank yards moved by a hauling unit equals weight of load, lb (kg), divided by density of the material in place, lb (kg), per bank yard (m3).
