Floor Plate Bending 2

[ToadJones]

Anyone know why AISC 360-05 is now using the plastic section modulus for calculating bending in plates?
This seems to be a pretty significant change from 1989
This came up in comparing the floor plate capcity tables of 89 vs 05

 

[JAE]

I don't think it is fear of LRFD. I think it is comfort with the green book.

 

[ToadJones]

What amazes me sometimes about this battle is the number of technical guides and specifications that also skipped over LRFD completely.
I know the ACOE has some specifications to this day that prefer the use of the Green Book.
AIST Technical Report 13 from 2003 still makes numerous code equation references to the Green Book.
From my experience, heavy industrial guys like ASD.
I am not very heavy, or industrial, but I do a lot of work in heavy industry.