×
INTELLIGENT WORK FORUMS
FOR ENGINEERING PROFESSIONALS

Log In

Come Join Us!

Are you an
Engineering professional?
Join Eng-Tips Forums!
  • Talk With Other Members
  • Be Notified Of Responses
    To Your Posts
  • Keyword Search
  • One-Click Access To Your
    Favorite Forums
  • Automated Signatures
    On Your Posts
  • Best Of All, It's Free!
  • Students Click Here

*Eng-Tips's functionality depends on members receiving e-mail. By joining you are opting in to receive e-mail.

Posting Guidelines

Promoting, selling, recruiting, coursework and thesis posting is forbidden.

Students Click Here

Jobs

Effective Length for X-Braces

Effective Length for X-Braces

Effective Length for X-Braces

(OP)
What are most designers using for effective brace lengths for steel X-bracing (CBF)?  The telecommunications industry TIA/EIA has reduction values base upon ASCE 10-97 "Design of Latticed Steel Transmission Structures", but what does AISC or IBC say about this issue?

TIA

RE: Effective Length for X-Braces

They don't say. It's common to do what the tower people do.

DBD

RE: Effective Length for X-Braces

ASCE 10 on p58 Example 7 says that you can consider the cross over point as a brace point if the tension member has 20% of the force in the compression member, so it is load case dependent if you can count on the tension member as a brace point.  Otherwise the out of plane buckling is the entire member length.

_____________________________________
I have been called "A storehouse of worthless information" many times.

Red Flag This Post

Please let us know here why this post is inappropriate. Reasons such as off-topic, duplicates, flames, illegal, vulgar, or students posting their homework.

Red Flag Submitted

Thank you for helping keep Eng-Tips Forums free from inappropriate posts.
The Eng-Tips staff will check this out and take appropriate action.

Reply To This Thread

Posting in the Eng-Tips forums is a member-only feature.

Click Here to join Eng-Tips and talk with other members!


Resources