Contact US

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

Composite Steel Truss

Composite Steel Truss

Composite Steel Truss

Has anyone ever seen/heard of a composite steel truss?  To clarify, I mean that the stringers/floorbeams would be composite w/ a concrete deck that is placed on top.  I'm wondering if this has ever been done.

RE: Composite Steel Truss

We've done it - with at least with stringers. Although most of the trusses I've worked on did not make the stringers composite for various reasons. Waaaaaaaay back we had a client that was opposed to all composite design. In another case the panel lengths weren't that long that studs would make a difference.

As far as floor beams go, I think it's more economical and easier for erection to run the stringers over the floorbeams.  

RE: Composite Steel Truss

Yes, composite trusses have been in use since the 1960s especially for deck trusses.

As to high trusses, this has little effect on the overall truss behavior.  

Pony trusses and deck trusses this is probably very helpful.

Eng-Tips Forums:Real Solutions for Real Problems Really Quick.

RE: Composite Steel Truss

I've done it for a thru truss.  We had I shaped bottom chords and made them composite with the concrete deck as well which eliminated the out-of-plane floor beam bending issue.  

RE: Composite Steel Truss

Thanks all for the input.  I just received a set of plans that has exactly what I was asking about as well.  The concept seemed practical, I had just never seen one before.  Also, was composite design being used that far back for trusses?  A lot of span bridges built around that time around here weren't designed to be composite.  It probably depends on which region one is in but we seem to be behind everyone.

RE: Composite Steel Truss

Composite decks make sense structurally...but I wouldn't use that system in cold areas where lots of salt is used.  Replacing a deck is one thing, replacing a composite deck is another.

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


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