A bracket ABCD having a hollow circular cross section consists of a vertical arm AB, a horizontal arm BC parallel to the x0 axis, and a horizontal arm CD parallel to the z0 axis (see figure). The arms BC and CD have lengths b1 = 3.6 ft and b2 = 2.2 ft, respectively. The outer and inner diameters of the bracket are d2 = 7.5 in. and d1 = 6.8 in. A vertical load P = 1400 lb acts at point D. Determine the maximum tensile, compressive, and shear stresses in the vertical arm?

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B