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Can this truss structure be statically indeterminate?

  1. Oct 22, 2012 #1
    I have designed this truss but I'm reading on the internet that this equation, 2j = m + r IS NOT enough to determine whether a structure is statically determinate. It has to do with the arrangement of the members as well???

    How can I tell beyond the equation I guess is my question?

    Also, what's the difference between statically determinate and stability?

    Here is a snapshot of how I determined statical determinacy.

    Thanks
    1. The problem statement, all variables and given/known data



    2. Relevant equations



    3. The attempt at a solution
     

    Attached Files:

  2. jcsd
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