Something for my Bridge Engineering Students
Well done to the 62 correct submissions, below are the solutions for those of you ( not very many) who got it wrong.
Moment at B is Diagram 3, when the load is between B and D the moment at B is always zero
Moment at C is Diagram 4, when the load is at A, the moment C is hogging
Reaction at B is Diagram 2, when the load is at A the reaction at B is greater than when the load is placed directly on B
Reaction at D is diagram 1, when the load is at A the reaction at D is downwards, as the load move between B and D the reaction at D acts upwards with increasing magnitude.