1. Refer to Problem 3.19. Using Eq. (3.51), determine the variation of the relative density with depth. Use Qc 5 1.
2. Refer to Problem 3.19. Use Eq. (3.55) and Kulhawy and Mayne factors for a and c to predict the variation of N60 with depth. Given:mean grain size D50 5 0.2 mm.
3. In the soil profile shown in Figure P3.22, if the cone penetration resistance (qc) at A (as determined by an electric friction-cone penetrometer) is 0.8 MN/m.2, estimate
a. The undrained cohesion, cu
b. The overconsolidation ratio, OCR
4. In a pressuremeter test in a soft saturated clay, the measuring cell volume Vo 5 535 cm3, po 542.4 kN/m2, pf 5 326.5 kN/m2, vo 5 46 cm3, and vf 5 180 cm3. Assuming Poisson's ratio smsd to be 0.5 and using Figure 3.31, calculate the pressuremeter modulus (Ep).