Grade-1 Registered Structural Engineer (China)

Practice session

A shallow foundation has base width b = 4.0 m and embedment depth d = 2.0 m. The subgrade soil has characteristic bearing capacity f_ak = 180 kPa, unit weight γ = 18 kN/m³ (below base), weighted average unit weight above base γ_m = 17 kN/m³, and bearing capacity correction coefficients η_b = 0.3 and η_d = 1.5. According to GB 50007-2011 Section 5.2.4, what is the corrected characteristic bearing capacity f_a of the subgrade?

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