Statics Truss Problem, Stuck at force in one member. Please help

AI Thread Summary
The discussion revolves around solving a statics truss problem, specifically focusing on member BD. The user is struggling with too many unknowns when attempting to apply the method of sections and has tried analyzing free body diagrams at joints B and D. Suggestions include cutting a section through BD and summing moments about the left support, while also recommending the method of joints to simplify the problem. By solving the joints in sequence (A, B, C, D, E), only two unknowns will need to be addressed at each joint. This approach can help clarify the forces in the truss members.
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Homework Statement


Figured it would be easier if I showed a picture

http://img210.imageshack.us/img210/707/problemcz.jpg


Homework Equations


Ʃm=0
Ʃfx=0
Ʃfy=0

The Attempt at a Solution



Here is my attempted solution, I am missing member BD and not sure which way to solve it, I tried sectioning it again and it provides too many unknowns. I tried taking a FBD at joint B and D but again too many unknowns.
Any suggestions on which way to go?
Thanks!
http://img804.imageshack.us/img804/12/photo2sw.jpg
 
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After solving for reactions and determining angles you should cut a section thru BD and sum moments about the left support. You may have done this but I can't read your calcs from this I phone tiny screen.
 
If you solve the joints in order ABCDE, then, in each case, there are just two unknowns to solve for. This is the method of joints which is a subset of the method of sections in which no moment equations are used.
 
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