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
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
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'.