Method of Joints: Solving for Fab in a Truss Structure

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SUMMARY

The discussion centers on solving for the force Fab in a truss structure using the Method of Joints. The participant encountered inconsistencies in their calculations when attempting to determine Fab, indicating a misunderstanding of the method. Ultimately, they resolved the issue with assistance from forum members, confirming the importance of correctly applying the Method of Joints in structural analysis.

PREREQUISITES
  • Understanding of truss structures and their components
  • Proficiency in the Method of Joints for analyzing forces
  • Familiarity with static equilibrium principles
  • Basic knowledge of vector resolution in two dimensions
NEXT STEPS
  • Study the Method of Joints in detail, focusing on force equilibrium
  • Practice solving truss problems using different loading conditions
  • Explore software tools for structural analysis, such as SAP2000 or ANSYS
  • Learn about alternative methods for truss analysis, like the Method of Sections
USEFUL FOR

Civil engineers, structural engineering students, and anyone involved in analyzing truss structures will benefit from this discussion.

JeeebeZ
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Homework Statement


Everything is in the PDF
View attachment Mech hw Q 3.pdf


Homework Equations





The Attempt at a Solution



So once I get to the last 2 joints Then all I have left to solve for is Fab.
I get different numbers each way i try to figure it out.
So I know I'm doing something wrong.
Any ideas?
 
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i got it solved... thanks anyway people
 

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