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I prefer LRFD. AISC has stated that it will not update the ASD code, 
and the last published version is June 1, 1989, almost ten years ago. 
This means that any new research will be incorporated into the LRFD 
only. Any existing problems with the ASD will not be corrected.  Most 
other materials are now being designed with LRFD or Strength Design 

Many of the difficulties people have using the LRFD results from the 
UBC attempts to integrate two radically different design methods into 
the static force procedures. The 1994 UBC required that LRFD users 
apply the same forces, but eliminated the 1/3 stress increase, 
hindering LRFD use. The 1997 UBC has attempted to correct this, but 
you will find a large number of little exceptions and "gottcha's".

Most people at my company use the ASD. If I ask them questions about 
some areas of design, I get blank looks, since the ASD lacks any 
discussion of design for those areas, or provides a simple method 
that does not really consider all factors.

Personally, I think the IBC will probably recognize and try to 
correct these problems, and begin to move the ASD to an Alternate 
Design status with some restrictions on areas which are not current.

> From:          "ITS Pty Ltd" <admin(--nospam--at)>
> To:            <seaint(--nospam--at)>
> Subject:       RE: SPACE GASS
> Date:          Thu, 23 Jul 1998 14:54:14 +1000
> Importance:    Normal
> Reply-to:      seaint(--nospam--at)

> Definitely.
> Can you tell me what type of design code for steel structures is in use in Canada.
> We are also looking at whether we will develop a design module to ASD and / or LRFD.  I have been told that the most prominent
> design code is still the Allowable Stress code.  Can I get some sort of a consensus on this from people who read it?
> Nick Stanley, B.Eng (Hons), B.Bus
> Structural Engineer - ITS
> admin(--nospam--at)
> > -----Original Message-----
> > From: T [mailto:vicpeng(--nospam--at)]
> > Sent: Thursday, 23 July 1998 14:33
> > To: seaint(--nospam--at)
> > Subject: Re: SPACE GASS
> >
> >
> > How about Canada too?  Something that is not as expensive as S-Frame or other finite element/dynamic capable software
> > would go down well with small businesses!!
> >
> > Thor Tandy P.Eng
> > Victoria  BC
> > vicpeng(--nospam--at)
> >
> >
> > Subject: SPACE GASS
> >
> >
> > >
> > >After a significant number of queries from the US we are looking at developing a design module for the US code (the
> > program already
> > >has code checking / design facilities for British, South African, Australian and New Zealand codes).  To this end I am trying to
> > >ascertain whether there would be any demand for a user-friendly, relatively low cost windows based program that performs static
> > >(linear and non-linear analysis), dynamic (frequencies and response) and elastic buckling analysis and design to the US code.
> > >
> > >
> >
> >
> >
> >
William Kirkham
KPFF Consulting Engineers
111 SW 5th Ave., Suite 2500
Portland, OR 97204-3628
(503) 227-3251
(503) 227-7980 FAX