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RE: We're Not Getting Older, We're Getting DUMBER [WAS: Any Young Engineers Out There?]

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Title: RE: We're Not Getting Older, We're Getting DUMBER [WAS: Any Young Engineers Out There?]

>do you know for 100% fact
>that 100% of all designs done
>per the 1989  ASD spec (aka
>9th edition) will be conservative
>relative to new AISC specs
>such as the 2005 spec

If this question could be answered entirely from the strength side, I am all but certain that the 2005 ASD provisions provide a stress or strength equal to or greater than the 1989 ASD provisions.  However, it can't be limited to the strength side, and the changes on the load side in ASCE 7 are significant, such as their reduction in the usefulness (virtual eliminiation) of the 1/3 stress increase.  When both sides of the equation are considered, you may find cases where 1989 exceeds 2005.

Charlie