Figure P12.36 shows a 3 5 pile group consisting of 15 concrete piles of 400 mm

Question:

Figure P12.36 shows a 3 × 5 pile group consisting of 15 concrete piles of 400 mm diameter and 12 m in length. What would be the maximum load that can be allowed on the mat with a factor of safety of 3? The piles have a centerto- center spacing of 1200 mm.

Figure P12.36

Qall = ? Clay C= 60 kN/m? 5 m 7 m Clay Cu= 90 kN/m?