ANSI/AISC05: What happened to hybrid beams? 1

[IJR]

Pals

The latest version of AISC has nothing to say about hybrid beams. Prior versions used factor Re not mentioned anywhere in this new version

Am I missing something?

respects
IJR

 

[271828]

Good question. For what it's worth, I suppose one could handle hybrid beams using F4 or F5. Myt, Mp, etc. can be adjusted to account for different web and flange yield stresses. I guess they're not used much nowadays, so the Spec. Committee decided to leave out explicit guidance for them.