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Re: LRFD, ASD, and USD

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I have heard the same claims about LRFD, but I think it is really the
most applicable when designing larger structures with large floor plates
(eg. commercial office buildings).  For most smaller structural steel
applications, I found the differences to be insignificant.

Additionally, I question if it is really fair to compare Gr. 50 steel
and LRFD vs. Gr. 36 and ASD? 

Bill Allen, S.E. wrote:
> It doesn't seem like too many engineers (especially us old geezers) are too
> "warm and fuzzy" about LRFD in steel, although I just read a study in Modern
> Steel Construction whereby one could save about 15-20% in tonnage when using
> Gr. 50 steel and LRFD vs. Gr. 36 steel and ASD.