ABSTRACT
Although the SPT is not considered as a refined and completely reliable method of investigation, the Ncor values give useful information with regard to consistency of cohesive soils and relative density of cohesionless soils. The correlation between N
cor values and relative density of granular
soils suggested by Peck, et aI., (1974) is given in Table· 9.3. Before using Table 9.3 the observed N value has to be corrected for standard energy and
overburden pressure. The correlations given in Table 9.3 are just a guide and may vary according to the fineness of the sand.
