The following are the results of a standard penetration test in sand. Determine the corrected standard penetration numbers, (N1)60, at the various depths given. That the water table was not found within 12 m below the ground surface. Assume that the average unit weight of sand is 17 kN/m3. Use Liao and Whitman's relationship [Eq. (17.10)]. Assume pa ( 100 kN/m2.
Depth (m) N60
2..................7
4.................10
6.................11
8.................14
10.................9