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Determine the distribution factor DFCB. Let w1 = 1.2 kip/ft, w2 = 3.0 kip/ft, L1 = 33 ft, and L2 = 26 ft. Assume EI = constant.

Determine the reaction moment at A. Let P = 140 lb, a = 55 in., and EI = 46 × 106 lb·in.2.

Determine the distribution factor DFEC. Let P1 = 13 kips, P2 = 13 kips, L1 = 24 ft, L2 = 12 ft, and L3 = 18 ft. Assume EI = constant.

Using the slope-deflection equations below, determine the beam slope at C. Let P1 = 17 kips, P2 = 16 kips, L1 = 22 ft, L2 = 12 ft, and L3 = 17 ft. Assume EI = constant.MAC = EIθC / 17 + 46.59MCA = EIθC / 8.5 + –85.41MCE = EIθC / 8.5 + 68MEC = EIθC / 17 + –68

Use Robot to determine the magnitude of the axial force in column FI. Assume each member is a steel W16x40, but delete the self-weight of the members. Let P1 = 14.0 kN, P2 = 38.0 kN, L1 = 10 m, L2 = 5 m, and L3 = 6 m.

Determine the reaction moment at A. Let P = 140 lb, a = 54 in., and EI = 230 × 106 lb·in.2.

A truck exerts wheel reactions P1 = 10 kips and P2 = 4 kips on the deck of a bridge. Determine the maximum positive moment at C. Assume the truck only travels in the direction shown. The influence lines for VC and MC are shown, along with the peak values of the influence lines.

Identify the moment equation that corresponds to MBC. Let w = 2.2 kip/ft, L1 = 16 ft, and L2 = 19 ft. Assume EI = constant.

Draw the influence line for the moment at B. What is the line’s maximum value? Let L1 = 4 m and L2 = 8 m.

Determine the slope at A that would be caused by the distributed load if the fixed support was a pin support, instead. Let w = 3 lb/in., a = 114 in., and EI = 117 × 106 lb·in.2.