Environmental Engineering Reference
In-Depth Information
where
25
′
′
(6.44)
rel
45
25
with 0
is the friction angle of soil at its relative density.
They suggest the use of Figure 6.48 (based on work by Wroth, 1975) to estimate
rel
1 where
for
lightly over-consolidated soils. For over-consolidated soils, Figure 6.49 may be used to
Figure 6.48.
Drained Poisson Ratio
versus plasticity index for some lightly over-consolidated soils
(Kulhawy and Mayne, 1988; Wroth, 1975).
Figure 6.49.
Drained Poisson ratio
versus OCR and stress level for clay (Kulhawy and Mayne, 1988
and Poulos, 1978).
