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Re: Hardy Frame, between code changes[Subject Prev][Subject Next][Thread Prev][Thread Next]
- To: seaoc(--nospam--at)seaoc.org
- Subject: Re: Hardy Frame, between code changes
- From: Parkerres <Parkerres(--nospam--at)aol.com>
- Date: Fri, 27 Mar 1998 11:16:43 EST
Jeff - In my opinion, if you know the upcoming code requires 2:1 H/L ratios for the shear walls and you are still designing for 3.5:1 just to sneak in under the deadline, you are doing your client and your profession a disservice. As a professional licensed engineer, you have a responsibility to design to incorporate the best available thinking into your design not just blindly finally the letter of the Code book. Particularly in circumstances following a "learning experience" such as an earthquake, are we bound to wait for code changes to be written and adopted before we try to pass on our experience into new projects? We were faced with this exact shear wall issue following Northridge. Our office is in LA which was enforcing 2:1, while surrounding cities such as Malibu and Santa Monica, where we do a lot of work, were not. We insisted that our clients follow the more restrictive guidelines because we felt irresponsible giving them a lower quality building just because some bureaucrat hasn't gotten around to changing the code language. High and mighty as this sounds, I know there was a difference in opinion (or at least in practice) with local engineer's regarding this issue. I still think we did the right thing to insist on forcing our client to follow the "new" code even if it wasn't quite in force yet, because we knew, as you do, that it was coming. As to the architect, he needs to face reality with regards to the new structural system, whether it is now or 6 months from now. That is part of his job. The use of steel frames is usually how we solve the lack of shear wall problem. The architect can often accomodate the frame with a 2x8 wall to hide the frame. I would encourage you to do right by yourself and your client. Remember, you are being hired for your expertise! Bruce Resnick, SE Parker Resnick Str. Eng.
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