A continuous footing is shown in Figure 17.22. Using Terzaghi’s bearing capacity factors, determine the gross allowable load per unit area (q_all) that the footing can carry. Assume general shear failure. Given: γ = 115 lb/ft³, c' = 600 lb/ft², ϕ' = 25^ο, D_f = 3.5 ft, β = 4 ft, and factor of safety = 3.

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Df FIGURE 17.22 F VAS B qall PAVLE Unit weight of soil y