Substances.

Specific Gravity.

Weight of

One Cubic

Foot.

Cubic

Feet per

Ton

Water = 1.

Pounds.

Cubic Ft.

Alum............................................................

1.72

107.2

20.9

Ballast (brick rubbish and gravel)........................

1.80

112

20.0

Brick...........................

1.90-2.40

124.7-135.3

18.1-16.0

Brickwork............................

1.76-1.84

110

20.4-18

Camphor.......................

.99

61.7

36.3

Clay.......................

1.92

119.7

18.7

Coal:

Anthracite...................

1.37-1.59

85.4-99.1

26.2-22.6

Bituminous......................

1.20-1.31

74.8-81.7

30-28.1

Earth, argillaceous:..............................

93-137

16-24

Dry, loose...........................

1.15-1.29

72-80

31.1-28

Dry, shaken....................

1.32-1.48

82-92

27.3-24.3

Moist, loose...........................

1.06-1.22

66-76

34.0-29.5

Packed.......................

1.44-1.60

90-100

24.8-22.4

Glass:

Flint.....................

2.90

187.0

12.0

Green...................

2.70

168.4

13.3

Plate...............................

2.70

168.4

13.3

Thick flooring........................

2.53

158.0

14.2

Crown...............................

2.50

155.9

14 4

Gunpowder, heaped........................

1.75-1.84

109.1-114.7

20.5-19.5

Ice, melting............................

.922

57.5

39

Marl............................

1.60-1.90

99.8-118.5

22.4-18.9

Masonry:

Ashlar granite.................................

2.37

147.5

15.2

" Limestone, hard...........................

2.70

168.5

11.4

" " semi-hard...........................

2.42

151.9

14.8

soft.......................

2.34

145.6

15.4

" Sandstone.......................

2.61

162.5

13.2

Rubble, dry...............................

2.21

138

16.2

mortar............................

2.47

154

14.6

Mortar, hardened...................................

1.65

103

21.7

Mud:

Dry, close.....................................

1.28-1.93

80-110

28.0-20.4

Wet, moderately pressed....................

1.93-2.09

110-130

20.4-17.2

Wet, fluid.........................

1.67-1.92

104-120

21.5-18.7

Phosphorus...........................

1.77

110.4

20.3

Plaster..........................

1.87-2.47

98

22.9

Portland cement.......................

1.25-1.51

78-94

28.7-23.8

Potash.............................

2.10

131

17.1

Sand..........................

1.44-1.87

90-117

24.9-19.1

" saturated with water....................

1.89-2.07

118-129

19-17.4

Salt, common........................

.1.92

119.7

18.7

" rock.........................................

2.10-2.26

131-140.7

17.1-15.9

Sulphur................................

2.00

124.7

18.0

Tiles.............................................................

2.00

124.7

18.0