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


Steel structure

Steel structure

Steel structure


We require some structure material urgently, but the material available in the market is not of AISC standard. The structural material quoted by the vendor have web thickness lower and have flange thickness larger then that stated in AISC. Vendor have also quoted that the moment of inertia of those beams is greater than that in AISC standard.

My question is that whether we can use this material on structure designed on AISC standard or not?

RE: Steel structure

Chemistry, yield, hardness, etc. should be checked. Any shape can use the rules in AISC, but the tables are not of any use.

RE: Steel structure

Also to consider - while the shapes may have higher I and S values, the fact that the web is thinner will most likely put the governing failure mode as buckling instead of yielding.  You will most likely get smaller allowable (or ultimate) moments from these shapes.

RE: Steel structure

You'll have to classify the material based on b/t ratios, at least in Canada.  These will determine the permissable stresses.


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!


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