Statics: pratt truss calculation check

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SUMMARY

The discussion revolves around the calculation of a Pratt truss using the joint method in statics, specifically addressing issues with joint B where a mathematical error was identified. The user expressed frustration over difficulties in finding mistakes in their calculations after multiple attempts. Additionally, there was a mention of using RISA software for project work related to civil engineering, emphasizing the importance of accurate calculations in practical applications.

PREREQUISITES
  • Understanding of statics principles, particularly the joint method.
  • Familiarity with Pratt truss design and analysis.
  • Basic proficiency in RISA software for structural analysis.
  • Knowledge of civil engineering fundamentals related to truss mechanics.
NEXT STEPS
  • Review the joint method for analyzing trusses in statics.
  • Practice using RISA for structural calculations and simulations.
  • Study common errors in truss analysis and how to avoid them.
  • Explore advanced topics in civil engineering related to structural integrity and design.
USEFUL FOR

Civil engineering students, structural analysts, and professionals involved in truss design and analysis will benefit from this discussion, particularly those seeking to improve their understanding of statics and software applications in structural engineering.

mrmotobiker
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Homework Statement



please find it attached as pdf.

Homework Equations



joint method was conducted.

The Attempt at a Solution



please find it attached. i spent so much time on this and i took statics like 1.5 years ago. can you help me find my mistake? i can't seem to find why is my center joints not canceling out.

oh does anyone know how to use RISA? this is for a project in my experimentation class.
 

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oh i know i know, I'm a civil and i know statics is a foundation for civil engineering =P but man... I am so pissed off because of this! i redid it like 5 times. i really need to finish this by tomorrow because I'm actually testing a the real thing on the truss machine. will post pics of the testing if i manage to finish this.
 
Don't know about RISA, but you made a math error at joint B in calculating BG..otherwise, you're doing good...
 

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