19.9 For the drilled shaft described in Problem 19.7, determine these values: a. The ultimate load-carrying capacity b. The load-carrying capacity for a settlement of 25 mm Use the procedure outlined in Section 19.8. 19.7 Figure 19.16 shows a drilled shaft without a bell. Here, L₁ = 6 m, L₁ = 7 m, D₁ = 1.5 m, c() = 50 kN/m², and c(2) = 75 kN/m². Find these values: a. The net ultimate point bearing capacity. Use Eqs. (19.23) and (19.24) b. The ultimate skin resistance. Use Eqs. (19.26) and (19.28) c. The working load, Q (FS = 3) FIG. 19.16 12 D, Clay Cu(1) Clay C₂ (2)