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[ Frames ] Determining the resultant forces at pins B and C

  1. Dec 1, 2014 #1
    So i'm a little bummed out about this one, I'd appreciate the help. Apparently the correct answers should be Fcd = 350lb, Fbe = 1531.25lb, or 1.53 kip.

    Problem can be viewed here: http://i.imgur.com/pK79lVN.png

    Here's my attempt at solution album: http://imgur.com/a/GQsxJ

    What can I do? Did I do something wrong? Thanks
  2. jcsd
  3. Dec 1, 2014 #2


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    There's a reason why we have the template here. There's also a reason why we say "Don't post images of your work".

    That picture is extremely messy and hard to follow. I'm not even sure what you, re doing on that page.
  4. Dec 1, 2014 #3


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    I am having trouble seeing what you are doing, I am not following your numbers. It is always a good idea to see if you can determine support reactions first by summing moments about one of the supports before you break apart the individual frame members. You will be able to get the horizontal force reactions. Note that the 1050 pound load acts at the center of its distribution when determining such reactions. Also take advantage of the so called 2 force members where end reactions of these members must be equal and opposite and directed toward each other along the same line of action. You must write down your equations more clearly. Use a sharp pencil!
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