×
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

web crippling of a W-Beam encased in concrete ??

web crippling of a W-Beam encased in concrete ??

web crippling of a W-Beam encased in concrete ??

(OP)
If a wide flanged beam is encased in concrete (no mesh so I cant consider it composite), do I need to check for web crippling, and web yielding for the concentrated load on the beam?

Is there any reference out there that covers this??

Thanks

RE: web crippling of a W-Beam encased in concrete ??

I'm not aware of any reference...I would probably not consider the concrete as resisting web crippling or providing any other help if:

1.  The concrete is simply unreinforced, cast fire proofing for the beam, or

2.  The concrete might be removed someday for whatever reason, or

3.  The beam and concrete is in any way exposed to potential moisture infiltration where rusting and spalling of the concrete might occur (I've seen this happen in buildings a lot).

I all of these cases, the concrete may not be considered structural by some future engineer or owner and the concrete removal would create a loss of capacity and safety without anyone (except for you) knowing it.

If the concrete is cast-in, integral with a slab, and reinforced, then perhaps you could then consider its benefits in regards to web crippling, LTB, etc.

RE: web crippling of a W-Beam encased in concrete ??

(OP)
Thanks Jae,
Thats a good answer. This is an existing building and WE have removed concrete from steel beams in other areas to investigate the existing conditions. I wouldn't like to rely on this concrete only to have someone else in 50 years remove it to investigate this connection.

Thanks

T

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