Determine the force in member AB, BC and BD which is used in conjunction with the beam to carry the 30-k load. The beam has a moment of inertia  of I = 600 in⁴, the members AB and BC each have a cross-sectional area of 2 in², and BD has a cross-sectional area of 4 in². Take E = 29(10³) ksi. Neglect the thickness of the beam and its axial compression, and assume all members are pin connected. Also assume the support at A is a pin and E is a roller.

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B, 3 ft 1A D TE - 3 ft – 4 ft 30 k