Approximate analysis of a rectangular frame subjected to vertical loading assumes that the inflection points are located at _______ of the span from each end of the girder and that the girder axial force is zero.

Assume that P = 15.6 kips and L = 6.5 ft. Determine the reaction at support A. Assume that EI is constant for the beam.

Use Robot to determine the magnitude of the vertical reaction force at A. Assume that M = 160 kN·m, P = 60 kN, w = 80 kN/m, and L = 1.9 m. Delete the self-weight of the beam.

Determine the magnitude of the bending moment at B. Let w = 2.1 kip/ft, L1 = 36 ft, and L2 = 25 ft. Assume EI = constant.

Determine the deflection at B that would be caused by the concentrated moment if the middle support was not there. Let M = 12,000 lb·in., a = 73.90 in., b = 54.10 in., and EI = 118 × 106 lb·in.2. Note that b = (a + b)[1 – sqrt(3)/3].

Determine the fixed end moment FEMBC. Let w = 1.3 kip/ft and L = 23 ft. Assume EI = constant.

Using the method of consistent deformations, determine the magnitude of the reaction at D. Let w = 18 kN/m and L = 8 m.

Determine the fixed end moment FEMBC with a settlement of 0.8 in. at support B.   As in Chapter 16, include the effect of settlement in the FEM calculation.  Let w = 2.3 kip/ft, L = 20 ft, E = 29,000 ksi and I = 1,650 in.4.

Determine the magnitude of the approximate bending moment at E in girder EF. Let w1 = 12 kN/m, w2 = 44 kN/m, L1 = 9 m, L2 = 7 m, and L3 = 7 m.

Using the method of consistent deformations, determine the force in member AD. Let P = 25 kN, L1 = 4 m, and L2 = 5 m. Assume EA = constant.