A rigid beam is placed on there columns of identical cross- sectional areas of \(200 \mathrm{~cm}^{2}\) each as shown in Fig. 13.32. Calculate the stresses in the columns if there was a gap of \(2 \mathrm{~mm}\) between the beam and the middle column before the load wass applied. Take \(E=18 . G P a\).

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1 2 800 kN T 2 mm 0.25m 0.25m Fig. 13.32 3 3 m