4-32 4-33 The strip footing is subjected to the column loadings shown. If the soil is assumed to exert a trapezoidal loading on the base of the footing, determine the magnitudes of w₁ and w2 and draw the shear and moment diagrams for the footing. 80 kN 120 kN W1 -2 m -3 m -1 m Prob. 4-33 B