×
INTELLIGENT WORK FORUMS
FOR ENGINEERING PROFESSIONALS

Contact US

*
*
*
*

Thanks. We have received your request and will respond promptly.

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!
*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

Lateral Bracing Strength

thread723-29293

Lateral Bracing Strength

Lateral Bracing Strength

(OP)
Is there any information on strength requirements or required cross section of lateral bracing?  AASHTO code gives minimum spacong criteria, but no information on the strength required to consider a point braced.

RE: Lateral Bracing Strength

It takes very little to brace a beam laterally.  How little is little?  I don't know.  It would be a good topic for a research paper.

I use about 10% of the load on the beam.  When applied to a tension member, 10% usually gives a fairly small brace.

Beef it up if it's for a crane beam or other dynamically loaded structure.

RE: Lateral Bracing Strength

We've used 2% of the axial load in the compression chord or flange you are bracing.

RE: Lateral Bracing Strength

Secondary bracing members used in towers and antenna supporting structures allows a resisting force between 1.5% tp 2.5% of the axial design compressive force in the supported member. This is given in Canadian Code S37-01.

Fs(tension/compression) = (0.015+0.008*(L/r-60)) * Cf

Cf = axail design compression of supported member

Hope this helps. Have a nice day!

Ayrom

RE: Lateral Bracing Strength

for AISC, horizontal force
H=Af*fb*2%.
Af:area of compress flange, fb: compress stress

RE: Lateral Bracing Strength

look at pg 16.1-21 in the "manual of steel construction LRFD 3rd edition" published by AISC

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! Already a Member? Login

Resources

Low-Volume Rapid Injection Molding With 3D Printed Molds
Learn methods and guidelines for using stereolithography (SLA) 3D printed molds in the injection molding process to lower costs and lead time. Discover how this hybrid manufacturing process enables on-demand mold fabrication to quickly produce small batches of thermoplastic parts. Download Now
Design for Additive Manufacturing (DfAM)
Examine how the principles of DfAM upend many of the long-standing rules around manufacturability - allowing engineers and designers to place a part’s function at the center of their design considerations. Download Now
Taking Control of Engineering Documents
This ebook covers tips for creating and managing workflows, security best practices and protection of intellectual property, Cloud vs. on-premise software solutions, CAD file management, compliance, and more. Download Now
Close Box

Join Eng-Tips® Today!

Join your peers on the Internet's largest technical engineering professional community.
It's easy to join and it's free.

Here's Why Members Love Eng-Tips Forums:

Register now while it's still free!

Already a member? Close this window and log in.

Join Us             Close