6.6 The predicted average load on a set of 10 foundations on a particular soil type is 500 kN (112 kips) with = 35 kN (7.9 kips). The measured loads are 809 kN (182 kips), 748 kN (168 kips), 695 kN (156 kips), 700 kN (157 kips), 902 kN (203 kips), 895 kN (201 kips), 752 kN (169 kips), 637 kN (143 kips), 741 kN (167 kips), and 697 kN (156 kips). Calculate the reliability index and the probability of failure. Consider the measured loads as resistance. 6.7 The unfactored loads at the base of a column located on a pile cap are shown in Fig. P6.7. Calculate the loads for Ground surface MDL 50 kNm (37 kip ft) M=80 kNm (59 kip ft) 30 kN (7 kips) DL 200 kN (90 kips) Q100 kN (45 kips) FIGURE P6.7 Concrete pile cap 0.5 m (2 ft) -0.75 m (2.5 ft)- 0.75 m (2.5 ft) -pile