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Cantilever Framework Practice Exam Confusion

  1. May 3, 2015 #1
    1430676784993-1828161305.jpg Little bit stuck with this practice question for my exams, how do they suppose I work out the length of the individual beams or height of the framework without an initial length? Is there a secret way I've never heard of? Any help would be appreciated, it's foundation degree level but probably easier than other issues faced in the engineering sector..
     
  2. jcsd
  3. May 3, 2015 #2

    jack action

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    You don't need them. Just do a FBD and you will see.

    I started it for you. The blue lines are the reaction forces in the beams and the red lines are the components of the reaction force of the slanted beam. Sum of Fy = 0, sum of Fx = 0 ...

    FBD.jpg
     
  4. May 3, 2015 #3
    Ah thanks for that, much appreciated! Knew I was missing something.
     
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