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Prob. 6.10-12. A rectangular box beam has the dimensions shown in Fig. P6.10-12 and is subjected to a vertical shear force V = 60 kN. Determine the web shear stresses Ta and Ta at the locations A and B indicated in the figure. TB 50 mm 50 mm 100 mm Z B Vv 100 mm t = 10 mm = const P6.10-12