Hello all,
I stumbled across a few non-typical steel angles in some open web steel joists and joist girders (supplied by Vulcraft) yesterday. The web members in particular induced some head scratching.
Some of the shapes I measured with my calipers were coming in around .110" in leg thickness...
I am going over the Moment Magnification Procedure for non-sway columns as described in ACI318-11 Section 10.01.6 and I noticed a difference in the code relative to ACI318-08 that I cannot find discussion or documentation of anywhere on the internet.
Equation 10-16 in ACI318-08 limits the value...