×
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 stiffeners in columns at moment connections (in close proximity)

Web stiffeners in columns at moment connections (in close proximity)

Web stiffeners in columns at moment connections (in close proximity)

(OP)
I am an engineer working for a steel fabricator. We are working on a job where the EOR is asking for web stiffeners at every moment connection. That in itself is not a problem. My issue is that I have beams with MCs coming into W-shape columns on all 4 sides with 2 sides being 2.5" lower (joist & deck floor system). He's asking for stiffeners in column at top & bottom flanges on all sides. So, at the top flange, I'll have stiffeners roughly 2.5" apart on the column web. I can't find anywhere in the manuals that says I can eliminate one set due to the close proximity of another set of stiffeners. Does that idea exist? On our own jobs, we've always made the judgment that if the stiffeners are that close that they serve the dual purpose. Am I out in left field in my thinking? Is there anywhere in a design guide or manual to back this up? Please help. Thanks.

Paul

RE: Web stiffeners in columns at moment connections (in close proximity)

There is a discussion in AISC Design Guide 13 section 5.1. They discuss that an offset stiffener could be treated with a strength reduction - its 100% capacity with 0" eccentricty to 65% capacity for a 2" eccentricity. It also discusses sloped stiffeners, or 2 close partial depth stiffeners.

RE: Web stiffeners in columns at moment connections (in close proximity)

(OP)
That helps. Thanks.

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