Short
Tons
Metric
Tons
Short
Tons
Metric
Tons
Short
Tons
Metric
Tons
Short
Tons
Metric
Tons
Short
Tons
Metric
Tons
Short
Tons
Metric
Tons
1 .90 8 7.25 20 18.14 45 40.82 80 72.57 140 127.00
2 1.81 9 8.15 25 22.87 50 45.35 90 81.64 150 136.07
3 2.72 10 9.07 30 27.21 55 49.89 100 90.75 165 149.68
4 3.62 11 9.97 35 131.75 60 54.43 115 104.32 200 181.43
5 4.53 12 10.88 40 36.28 65 58.96 125 113.39 250 225.79
6 5.4 14 12.70 70 83.50 130 117.93 265 240.40
7 6.35 15 13.60 75 88.00 135 122.47 300 272.14
Substance Wt Per
Cu. Ft. lbs.
  Substance Wt Per
Cu. Ft. lbs.
Metals, Alloys, Ores   Water
       
Alum., cast-hammered 165 Water, 4 C., max. density 62.428
Aluminum. bronze 481 Water. 100 C 59.830
Brass, cast-rolled 534 Water, Ice 56
Bronze. 7.9 to 14% Sn 509 Water, snow, fresh fallen 8
Bronze, Phosphor 554 Water, sea water 64
Copper, cast-rolied 556    
Copper ore. pyrites 262    
Gold coin (U.S.) 1073 Various Busting Materials
Iron. gray cast 442    
Iron, cast. pig 450 Ashes, cinders 40- 45
Iron, Wrotght 485 Cement Portland, loose 90
Iron, co, hematite 325 Cement Portland, set 183
Iron ore, limonite 237 Lime, gypsum, loose 53 -64
lion ore, magnetite 315 Mortar, set 103
Iron stag 172 Slags, bank slag 67 -72
Lead 710 Stags, bank, screenings 98-117
Lead ore. galena 465 Slags, machine slag 96
Manganese 475 Slags, stag sand 49 – 55
Manganese ore, prolusite 259    
Mercury 849 Earth, etc. Excavated
Nickel 537 Clay, dry 63
Platinum, cast-hammered 1330 Clay, damp, plastic 110
Silver, cast-harnmered 656 Clay, and gravel, dry 100
Steel. cold-drawn 489 Earth, dry loose 76
Tin. cast-hammered 459 Earth, dry. packed 95
Tin ore, cassibrite 418 Earth, mud. packed 115
Tungsten 1200 Riprap, limestone 80 – 85
Zinc, cast-rolled 440 Riprap, sandstone 90
Zinc ore. blende 253 Riprap. shale 105
    Sand, graveL dry, loose 90 – 105
Timber. U.S. Seasoned
(Moisture, 15 lo 20%)
Sand, graveL dry, packed 100 – 120
Sand, gravel, wet 118 – 120
Ash, white-red 40    
Birch 32 Excavations in Water
Cedar, white-red 22    
Cypress 30 Sand or gravel 60
Fr. Douglas spruce 32 Sand or gravel and clay 65
Fir, eastern 25 Clay 80
Elm. white 45 River mud 90
Hemlock 29 Soil 70
Hickory 48 Stone riprap 65
Mahogany 44    
Maple, hard 43 Stone, Quarried Piled
Maple, white 33    
Oak, chestnut 54 Basalt. granite, gneiss 96
Oak. live 59 Limestone, marble, quartz 95
Oak. red. black 41 Sandstone 82
Oak. white 46 Shale 92
Pine. Oregon 32    
Pine, red 30 Coal and Coke, Piled
Pine. white 26    
Pine, yellow, long-leaf 44 Coal, anthracite 47 – 58
Walnut, black 42 Coal. bituminous, lignite 40 – 54
Walnut white 26 Coal. peat, turf 20 – 26
Diameter
Inches Millimeters
1/64 .4o
1/32 .79
3/64 1.2
1/16 1.6
5/64 2.0
3/32 2.4
7/64 2.8
1/8 3.2
5/32 4.0
3/16 4.8
7/32 5.6
1/4 6.3
5/16 7.9
3/9 9.5
7/16 11.1
1/2 12.7
1/16 14.3
5/8 15.9
11/16 17.5
3/4 19.0
13/16 20.6
7/8 22.2
15/16 23.8
1 25.4
1-1/16 27.0
1-1/8 28.6
1-3/6 30.2
1-1/4 31.7
1-3/8 34.9
1-7/16 36.5
1-1/2 38.1
1-5/8 41.3
1-11/16 42.9
1-3/4 44.4
1-13/16 46.0
1-7/8 47.6
1-15/16 49.2
2 50.8
2-1/16 52.4
2-1/8 54.0
2-1/4 57.1
2-1/2 63.5
2-3/4 69.9
3 76.2
3-1/4 82.5
3-1/2 88.9