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F=3for square fooling vitimate loadl Bearing capality\begin{array}{l}q=1.3 C N_{C}+\gamma D_{f} N_{q}+0.4 \times B N_{\gamma} \\\text { for clay } \phi=0 \\\text { for } \phi=0 \quad N_{c}=5.7 \quad N_{q}=1 \quad N \gamma=0 \\q=1.3 C N C+\gamma D_{f} N_{q} \\q=1.3 \times 60 \times s .7+19 \times 1.5 \times 1 \\=473.1 \mathrm{kN} / \mathrm{m}^{2}\end{array}The ret ultimate bearing capality is\begin{aligned}q_{n u} & =q-r D t \\& =473.1-19 \times 1.5=446.4 \mathrm{~N} 1 \mathrm{~m}^{2}\end{aligned} The net safe bearing capacitya_{n s}=\frac{a_{n u}}{k}=\frac{444.6}{3}=148.2 \mathrm{kN} / \mathrm{m}^{2}the safe bearing capacity\begin{array}{l}q_{s}=q_{n s}+\gamma D_{f}=148.2+19 \times 1.5 \\q_{s}=176.7 \mathrm{kN} / m^{2}\end{array}The maximum colums coad that cani be applied\begin{aligned}Q_{S} & =q_{S} \times \text { Area of footing } \\& =176.7 \times 2 \times 2 \\& =106.8 \mathrm{kN}\end{aligned} ...