×
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

Column Design for Axial Load and Moment

Column Design for Axial Load and Moment

Column Design for Axial Load and Moment

(OP)
Does anyone have any good references on column design for axial load + moment? Say I have a 20' tall column with an allowable axial load of 20 kips. Say there is a moment of 5 foot-kips at the base plate. What would one have to take into account? I have AISC's latest errata of their Design Guide 1, but that isn't updated for Allowable Strength Design (ASD05).
 

RE: Column Design for Axial Load and Moment

You use beamcolum (column with moments) equations in books or codes to resolve this. Chapter H of the LRFD code is a sample of such.

If you want to refer to ASD procedures, then (if allowed by the standing regulations) use ASD design, it is still chapter H of the AISC's ASD 1989 edition.

You can find nice exlanation of why and how in Gaylord, Gaylord and Stallmeyer's book

Design of Steel Structures.

RE: Column Design for Axial Load and Moment

Salmon and Johnson Chapter 12 has a section on combined compression and bending.

Any steel designers handbook will step you through the process, combined compression and bending is very common in design. You will need to calculate a reduced compression capacity depending on how close to moment capacity your section is.

If your column is a unrestrained free cantilever, you will need to calculate the effective length of your column. I would take 2.2*20'.

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