RE: SEISMIC: Roof Supported Equipment[Subject Prev][Subject Next][Thread Prev][Thread Next]
- To: seaint(--nospam--at)seaint.org
- Subject: RE: SEISMIC: Roof Supported Equipment
- From: "Polhemus, Bill" <bill.polhemus(--nospam--at)tyson.com>
- Date: Tue, 17 May 2005 18:30:28 -0500
From: Polhemus, Bill [mailto:bill.polhemus(--nospam--at)tyson.com]
Sent: Tuesday, May 17, 2005 6:14 PM
Subject: SEISMIC: Roof Supported Equipment
Because you evil Left-Coasters have foisted this upon us, I now have to foray into the "dark side" of structural engineering, calculating seismic forces.
My untutored brain does register grudging respect that the ICC (in reality, many of you SEAOCers) have done a creditable job digesting all this NEHRP stuff for me, but I'm still agog at the sheerness of the learning curve.
Anyway, I've got a situation that would be a no-brainer if it were just a building. But instead, I've got some rather massive equpment sitting on a steel platform which in turn is place on the ROOF of an existing building, and I want to determine what the effect of this will be.
Again, it will probably turn out to be nothing, but I'm undecided enough about it that I know I have to make the effort.
So instead of just a building with a site factor involved, I've got a building with a site factor, and then the equipment on top of that. Surely the building will act as a sort of giant energy absorber for the equipment such that the equipment seismic effect will be much diminished.
The building is a single (high-bay) story, all precast concrete.
Do I do this as a Two DOF system?
What would YOU do?
This email and any files transmitted with it are confidential and intended solely for the use of the addressee. If you are not the intended addressee, then you have received this email in error and any use, dissemination, forwarding, printing, or copying of this email is strictly prohibited. Please notify us immediately of your unintended receipt by reply and then delete this email and your reply. Tyson Foods, Inc. and its subsidiaries and affiliates will not be held liable to any person resulting from the unintended or unauthorized use of any information contained in this email or as a result of any additions or deletions of information originally contained in this email.
- Prev by Subject: SEISMIC: Roof Supported Equipment
- Next by Subject: RE: SEISMIC: Roof Supported Equipment
- Previous by thread: RE: SEISMIC: Roof Supported Equipment
- Next by thread: RE: SEISMIC: Roof Supported Equipment