I get the feeling that Table B3.2 of ANSI/AISC 360-05 does not exist. I have been through the errata and it makes no mention of it. In "Symbols" on page 16.1-xxxiv of the AISC Steel Construction Manual, 13th Edition, 5th Printing, "My" is said to be defined by Table B4.2. Can anyone clear this up?
I am a structural engineer in the states. I am looking at some metal bar grating for a factory floor. This is carbon steel stuff and its vintage is 60's. The Metal Bar Grating Manual (MBG 531-09 published by NAAMM) uses an allowable stress of 18 ksi. I Believe that I can eek out extra capacity...