×
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

Simple Colum Effective Length Factor K

Simple Colum Effective Length Factor K

Simple Colum Effective Length Factor K

(OP)
We have a basic load bearing tilt-up concrete wall warehouse with diaphragm roof deck and the walls taking shear.  The roof is conventional open web roof joists and girders.  The girders seat on top of the pin-pin columns.  I am trying to justify the common use of a K factor of 1.0 to select the column size for support of the axial loads.  The columns have roof steel members framing in on all 4 sides. I am not sure how to apply the definitions of braced and unbraced frames in AISC.  Our columns will not be braced but can the frame be considered braced by the deck transfer to the shear walls?
If so then the K factor can be 1.0.

RE: Simple Colum Effective Length Factor K

You have a braced condition as the lateral stability of the building does not depend upon the columns in bending to resist the lateral drift.  Thus, the k factor should be no smaller than 1.0.

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