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Assuming that the live loads are transmitted to the bottom chords of the truss, draw the influence line for the force in member BC. What is the line’s minimum value? Let L = 14 ft.

Determine the magnitude of the largest shear force in the beam. Assume L = 3 ft, P = 750 lb, and w = 300 lb/ft.

On this quiz, “maximum” refers to the highest vertical point on the influence graph and “minimum” refers to the lowest vertical point on the graph.Draw the influence line for the vertical reaction at A. What is the line’s maximum value? Let L1 = 3 m and L2 = 11 m.

Draw the influence line for the moment at B. What is the line’s minimum value? Let L1 = 4 m and L2 = 9 m.

Draw the influence line for the moment at B. What is the line’s minimum value? Let L1 = 5 m and L2 = 8 m.

Determine the deflection at B that would be caused by the concentrated moment if the middle support was not there. Let M = 14,500 lb·in., a = 83.14 in., b = 60.86 in., and EI = 35 × 106 lb·in.2. Note that b = (a + b)[1 – sqrt(3)/3].

The beam supports a single live load of 2,090 lb, a uniform live load of 600 lb/ft, a uniform dead load of 115 lb/ft. Determine the maximum positive shear that can be developed at point B. Assume the support at A is a pin and C is a roller. The influence lines for VB and MB are shown, along with the peak values of the influence lines.

On this quiz, “maximum” refers to the highest vertical point on the influence graph and “minimum” refers to the lowest vertical point on the graph.Draw the influence line for the vertical reaction at A. What is the line’s minimum value? Let L1 = 5 m and L2 = 8 m.

Determine the beam deflection at point H. Assume that EI = 1.91 × 1010 kN-mm2 is constant.

The truss is pin supported at A and rocker supported at E. Assume all members are pin connected. Determine the magnitude of the force in member AI. Let F1 = 550 lb, F2 = 900 lb, and L = 5 ft.