ABSTRACT
Terzaghi and Peck Formula Based on the work of Skempton and others, Terzaghi and Peck (1948) modified Eq. (7.16) applicable to normally consolidated clays of low to moderate sensitivity as
(7.17)
Azzouz et al., Formula Azzouz et aI., (1976) proposed a number of correlations based on the statistical analysis of a number of soils. The one of the many which is reported to have 86 percent reliability is
Cc = 0.37 (eo + 0.003 wI + 0.0004 wn - 0.34) where eo =in-situ void ratio, wI and w
n are in per cent. For organic soil they proposed
(7.18)
(7.19)
Hough's Formula Hough (1957), on the basis of experiments on precompressed soils, has given the following equation
Cc = 0.3 (eo - 0.27) (7.20)
(7.21) (7.22)
Nagaraj and Srinivasa Murthy Formula Nagaraj and Srinivasa Murthy (1985) have developed equations based on their investigation as follows
C c
= 0.2343 el Cc = 0.39 eo
where el is the void ratio at the liquid limit, and eo is the in-situ void ratio. In the absence of consolidation test data, one of the formulae given above may be used for
computing C c
according to the judgment of the engineer.
