Geoscience Reference
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Table 2.14 Result of the laboratory test of soil samples from lower Paglajhora and 14 Miles
Bustee
Sample
no.
Lithology
Cohesion
(kg/cm 2 )
Angle of
internal
friction (
Wet
density
(gm/cm 3 )
Dry
density
(gm/cm 3 )
Water
holding
capacity (%)
φ
)
I
Foliated
gneiss and
mica-schist
0.12
22 ° 30
2.14
1.86
32
II
Foliated
gneiss and
mica-schist
0.25
19
°
2.08
1.79
28
III
Foliated
gneiss and
mica-schist
0.18
17
°
30
2.02
1.74
23
Fig. 2.15 Spatial distribution of cohesion (c)
2.3.5 Wet Soil Density (
γ s )
Speci
c unit weight of water and unit weight of the soil were estimated by
examining the soil samples collected from 50 landslide locations during
eld
investigation from the GSI (Geological Survey of India, East Kolkata) laboratory.
The density of soil and water varies from place to place due to in situ
geo-hydrologic condition. The saturated soil density of rock was also consulted and
 
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