Draw the influence line for the moment at B. What is the line’s maximum value? Let L1 = 5 m and L2 = 11 m.

Assuming that the live loads are transmitted to the bottom chords of the truss, draw the influence line for the force in member BF. What is the line’s minimum value? Let L = 16 ft.

Determine the reaction moment at A. Let P = 192 lb, a = 56 in., and EI = 214 × 106 lb·in.2.

Determine the deflection at B that would be caused by the concentrated moment if the middle support was not there. Let M = 10,800 lb·in., a = 65.82 in., b = 48.18 in., and EI = 84 × 106 lb·in.2. Note that b = (a + b)[1 – sqrt(3)/3].

The beam supports a single live load of 2,970 lb, a uniform live load of 550 lb/ft, a uniform dead load of 85 lb/ft. Determine the maximum negative 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.

Determine the slope at A that would be caused by the distributed load if the fixed support was a pin support, instead. Let w = 4 lb/in., a = 118 in., and EI = 33 × 106 lb·in.2.

Assuming that the live loads are transmitted to the bottom chords of the truss, draw the influence line for the force in member BF. What is the line’s minimum value? Let L = 18 ft.

A great majority of structures being built today are statically indeterminate.

Determine the slope at A that would be caused by the distributed load if the fixed support was a pin support, instead. Let w = 4 lb/in., a = 108 in., and EI = 214 × 106 lb·in.2.

The beam supports a single live load of 1,710 lb. Determine the maximum negative 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.