Figure P13.9 shows a drilled shaft extending into clay shale. Given: q u (clay shale) = 1.81

Question:

Figure P13.9 shows a drilled shaft extending into clay shale. Given: q_u (clay shale) = 1.81 MN/m². Considering the socket to be rough, estimate the allowable load-carrying capacity of the drilled shaft. Use FS = 4. Use the Zhang and Einstein procedure.

Loose sand 2 m 1.5 m Y= 15 kN/m3 6'= 30° Clay shale Concrete drilled shaft 8 m