Return to index: [Subject] [Thread] [Date] [Author]

Limit states design, was Re: What does AISC's Research Show?

[Subject Prev][Subject Next][Thread Prev][Thread Next]
"I've enjoyed about all I can stand" on ASD vs LRFD.  Most of our minds are
made up, and we aren't interested in facts to the contrary.

Now tell me about the "limit states design" as used in Canada.  If it's
better, cheaper, faster, I'm interested.  Otherwise, forget it.  

Just now (this week, anyway), I have all the good, old, dirty, dangerous,
non-repetitive, industrial work I can handle. 

Fountain E. Conner, P.E.
Gulf Breeze, Fl. 32561

> From: Peter Higgins <JillHiggins(--nospam--at)>
> To: INTERNET:seaint(--nospam--at)
> Subject: FW: What does AISC's Research Show? (Was: ASD vs. LRFD)
> Date: Sunday, April 30, 2000 12:33 PM
<liberally snipped>

> LRFD is considerably
> behind the times compared to the rest of the world. Even the Structural
> Institute of ASCE has finally gotten frustrated with AISC and published
> their own review of the literature and world codes. The conclusion? LRFD
> comes out badly in the comparison, and is considerably more cumbersome to
> boot. 
> Debating ASD vs LRFD is sort of like debating the merits of the Model T
> the Model A. The rest of the world has switched to at least the V8, some
> them with fuel injection and overhead cams.
> Anyone who has used one of the more modern codes cannot come away less
> impressed. Virtually all of them predict behavior better, are easier to
> use, and more transparent to the designer.
> For example, Is there anyone on the list group who has used limit states
> design in Canada who would prefer to use LRFD? I certainly wouldn't. Not
> only would I lose in a design competition, but I would take far longer to
> do the job, and probably be thoroughly baffled a couple of times in the
> process.
> Not only is ASD ready for the trash heap, but LRFD should land there
> on top of it. If AISC won't get in tune with the rest of the world,
> some one else will. As the saying goes: "Lead, follow, or get out of the
> way".
> Peter Higgins, SE