A square footing is shown in Figure 16.19. Determine the gross allowable load, Qall, that the footing can carry. Use Terzaghi's equation for general shear failure (Fs = 3.5). Given: ( = 16 kN/m3, (sat = 18.9 kN/m3, c' = 17 kN/m3,(' = 32°, Df = 1.2 m, h = 0.9 m, and B = 1.75 m?

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Unit weight of soil : γ -Groundwater table sat