Slightly weathered Sandstone
(BP2g, BP2s)
Moderately weathered Sandstone (BP3)
BP4
Highly weathered Sandstone (BP5)
Slightly weathered shale ( S2 )
Moderately to Highly weathered shale
S5
S5a
|
Very hard and intact
Hard and slightly disintegrate
Breakable and easily disintegrate
Easily broken and disintegrate
Hard and slake
Breakable and easily slake
Breakable and slake
|
> 30
5-30
10-15
dented
< 20
10-20
dented
|
Smooth and intact
Slightly massive and gritty
Partially massive and gritty
Very gritty and massive
Soapy and intact
Powdery and slightly massive
Powdery, gritty and massive
|
2.4 – 2.6
2.2 – 2.7
2.0 – 2.7
1.5 – 1.9
2.4 – 2.5
2.2 – 2.4
2.5 – 2.6
|
98
94
-
46
92
96
92
|