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Solving for Forces in a Truss

  1. Jun 2, 2010 #1
    Can anyone suggest the method to use for solving for the force in member GI in the attached diagram? Is there a way to section the truss?

  2. jcsd
  3. Jun 2, 2010 #2


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    It might help to first find the external reaction forces at H and I. There are normally some rules/assumptions about truss analysis. Do you know what they are? They must have been provided in class or the book.
  4. Jun 2, 2010 #3


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    There may be an easier way, but after solving reactions, use the method of joints, starting at A, and then grind out the forces, carefully watching plus and minus directions, joint by joint, until reaching the bottom....
  5. Jun 2, 2010 #4
    yeah i forgot to mention that i can solve for the external forces okay. i was hoping i wasn't seeing a way to section it, hoping to avoid going join by join.

    thanks community.
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