Standard penetration tests were carried out in normally consolidated fine sands at different locations. The following data

Question:

Standard penetration tests were carried out in normally consolidated fine sands at different locations. The following data were collected, with average unit weights assumed for the entire depth. Determine the (N₁)₆₀ values using the correction factors proposed by (a) Liao and Whitman (1986) and (b) Skempton (1986).

Average unit weight (kN/m) Depth (m) 3.5 18.0 12 8.8 18.0 8 12.4 18.5 15 18.5 18.5 19 23.6 19.0 21 16.9 19.0 26