Question 14

Posted in: Beams

Something for my Bridge Engineering Students

influence 14

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.

Well done to the 62 correct submissions, below are the solutions  for those of  you ( not very many) who  got it wrong.

Solution:

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.

Posted in: Beams

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