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APPENDIX: REFERENCE TABLE OF PROPORTION OF
COMMON MATERIALS
S/N Material name
Category
Specific gravity reference
(Kg/m
3
)
Note
1
Ordinary soil
Stick thin dry soil
1250
Caking dry soil
1520
Powder dry soil
1550
Wet soil
1725
Mud-like soil
1730
Tight soil
1840
2
Clay
Wet soil
1750
Dry soil
1485
3
Sand
Loose dry sand
1440
Wet sand
1680
Water-Wet Sand
1850
4
Sandstone
Broken sand stone
1500
Solid sandstone
2300
5
Gravel
Dry gravel
1485-1650
Wet gravel
2015
Gravel pit
1900
Dry clay mixed
1185
Wet clay mixed
1650
Dry sand mixed
1730
Wet Sand Mixed
2000
6
Bauxite
1425
7
Gravel
1600
8
Slag
Dry
650
9
Coal
Smokeless Coal
1190
Bituminous coal
950
Dry peat
415
Wet peat
1125
10 Weathered
rock
75% of the
geotechnical
1955
50% of the
geotechnical
1725
25% of the
geotechnical
1585
11 Gypsum
Crushing Block
1600
Break bulk
1810
A solid block
2780
12 Limestone
Fragmentation
1550
A solid block
2600
13 Slag
1760-2100
14 Granite
Chunky
1650
Overall
2800
15 Hematite
2460
16 Magnetite
2780