Registered Civil Engineer — Geotechnical (China)

Practice session

A rectangular spread footing has foundation width b = 4.0 m and embedment depth d = 2.5 m in a silty clay subgrade (GB 50007-2011). The characteristic bearing capacity is fak = 180 kPa. The subgrade unit weight below the base is γ = 18.0 kN/m³, and the weighted average unit weight above the base is γm = 17.0 kN/m³. The bearing capacity correction coefficients are ηb = 0.3 and ηd = 1.6. What is the corrected characteristic bearing capacity fa?

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