Question
Q3. The structure shown in Figure Q3 has been analysed using a new software package. The magnitude of the uniformly distributed load F is 1. (a) Sketch the bending moment diagram. No calculations are required at this stage. [5 marks] (b) Using the slope deflection approach, write the equations of the moment equilibrium at A and B. Do not solve for A and 0 B. [10 marks] (c) If the correct value of the bending moment at B is 39, what is the value of the bending moment at A? [5 marks] (d) Using the concept of approximate positions of points of contraflexure, check this value of the bending moment at B. [5 marks] F KN/m A B U 4m 6m 5m Figure Q3 A three span continuous beam