Question 24

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The continuous  two span footbridge has a uniform EI  (100,000kNm^2) and carries a total load of 12kN/m over its entire length Following a recent flood both the left hand (A) and inner  support (B) sink by 25mm.  Using  any method determine the moment  over  support B.


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HINT 1: Think about the relative  movement of each support.

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