Checking My Work: Solving for Force in Member GH

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SUMMARY

The discussion centers on the calculation of forces in truss member GH, where the user obtained a tension force of 11.3 while a force truss member calculator indicated a tension of 6. The load applied at joint C is 12.5, with a roller at joint I and a hinge at joint F. The consensus among participants is that the user's calculations appear correct, particularly with a confirmed force of 6.91 in tension for member AG, suggesting the calculator may be inaccurate.

PREREQUISITES
  • Understanding of static equilibrium in truss systems
  • Familiarity with force analysis techniques in structural engineering
  • Proficiency in using force truss member calculators
  • Knowledge of tension and compression forces in structural members
NEXT STEPS
  • Review the principles of static equilibrium in truss analysis
  • Learn how to manually calculate forces in truss members using the method of joints
  • Investigate common errors in force truss member calculators
  • Explore advanced structural analysis software for accurate force calculations
USEFUL FOR

Engineering students, structural analysts, and professionals involved in truss design and analysis will benefit from this discussion, particularly those focused on verifying calculations and understanding discrepancies in computational tools.

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1. Homework Statement
I solved for all the forces in the members, but I was using a force truss member calculator to check my work. All the forces match up with the calculated but one, that is the force in member GH. I get 11.3 in tension the calculator gets 6 in tension. So am I right or the calculator? I attached the diagram. The load is 12.5 and is applied at joint C. There is a roller at joint I and a hinge at joint F. Can someone solve for member GH and tell me what they get.

Homework Equations

The Attempt at a Solution

 

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Your answer looks about right. What force did you get in AG? If the calculator is messed, I wouldn't compare your answers to it for any member.
 
PhanthomJay said:
Your answer looks about right. What force did you get in AG? If the calculator is messed, I wouldn't compare your answers to it for any member.
6.91 in tension
 

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