There is a square five pile cap as shown in Figures 4-36. Known conditions: cushion cap thickness of 1.2m, effective height h0=1050mm, using C25 concrete (tensile strength design value ft=1.27MPa); Pile section size 0.4m * 04m; Column section size 0.6m * 0.6m. Calculate the punching shear bearing capacity Fl of the cushion cap as () kN.<image 1>
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