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Pad footing: plan size from the bearing resistance
Plan size of a square pad footing from the characteristic loads and the allowable bearing pressure. Reference: EN 1997-1 6.5 (with EN 1992-1-1 9.8).
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# Inputs
G_k := 800 kN
Q_k := 400 kN
q_a := 250 kN/m^2
h := 0.6 m
gamma_conc := 25 kN/m^3
# Size
A_req := (G_k + Q_k)/(q_a - gamma_conc*h) = m^2
B := ceil(sqrt(A_req)/(0.1 m))*0.1 m = m
q := (G_k + Q_k)/B^2 + gamma_conc*h = kN/m^2
q <= q_a =
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