Material Bank Weight
per cu. yd.
Percent of Swell Load Factor Loose Weight
per cu. yd.
Clay, dry 2300 25 0.80 1840
Clay, dense, tough or wet 3000 33 0.75 2250
Coal       1630
Anthracite 2200 35 0.74 1400
Bituminous 1900 35 0.74 1400
Earth, dry 2800 25 0.80 2240
Earth, wet 370 25 0.80 2700
Gravel, dry 3250 12 0.89 2900
Gravel, wet 3600 14 0.88 3200
Limestone, blasted 4200 67 - 75 0.60 - 0.57 2520 - 2400
Limestone, crushed       2700 - 2600
Sand, dry 3250 12 0.89 2900
Sand, wet 3600 14 0.88 3200
Sandstone 4140 40 - 60 0.72 - 0.63 2980 - 2610
Shale, riprap 2800 33 0.75 2100
Slate 4590 - 4860 30 0.77 3530 - 3740
Taprock 5075 50 0.67 3400
Snow, freshly fallen       135 - 235
Snow, wet       405 - 540
Garbage       1350
Ice       1550
Ashes       1080


Loader Bucket Fill

Material Factor (%)
Mixed moist aggregates 95 - 100
Uniform aggregates up to 1/8 inch 95 - 100
1/8 to 3/8 inch 90 - 95
1/2 to 3/4 inch 85 - 90
1 inch and over 85 - 90
Moist loam 100 - 110
Soil, boulders, rock 80 - 100
Cemented Materials  
Blasted 85 - 95
Well 80 - 95
Average 75 - 80
Poor 60 - 65




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