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Homework Help: Frame Analysis Using Method of Members, 3Hinged Arch Help!

  1. Sep 6, 2009 #1
    1. Determine the type and magnitude of force in bars BD and BE using method of members.

    2. Well, I don't know where to start. I know there are three equations EFy=0, EFx=0, EMc=0 but I don't know what the first member to consider and how to solve this type of problem.

    3. There is a hint that first isolate each truss as a free body. No final answer is given in the textbook.
    So far I isolated each truss, then sum the moments at A for the left truss then moments at C for the right truss. Am I on the right path?

    I need your help. Please help.! Thanks!

    Attached Files:

    Last edited: Sep 6, 2009
  2. jcsd
  3. Sep 6, 2009 #2


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    iceicebaby03: Yes, you are on the right path. Hint: Don't you also want to use your other two relevant equations in item 2 of post 1, on each of your two isolated trusses?
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