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RE: Italian Seismic Loads[Subject Prev][Subject Next][Thread Prev][Thread Next]
- To: "'seaint(--nospam--at)seaint.org'" <seaint(--nospam--at)seaint.org>
- Subject: RE: Italian Seismic Loads
- From: Harold Sprague <harold.sprague(--nospam--at)neenan.com>
- Date: Fri, 22 Jan 1999 12:14:49 -0700
Bruce, This is an area that is in a state of flux. The 97UBC (the 2000 IBC will be in general agreement) states: Fp = 4.0 Ca Ip Wp Ca is a maximum of 0.66 (reflects bad soil and close to fault) Ip = 1.0 (but you could make a case for a 1.5 if it is an important piece of art work) Fp = 2.64 Wp You can see the huge difference with the 1994 UBC. With good soil and 10 km away from the fault Ca = 0.32 Fp = 1.28 Wp There are also adjustments for height of the building and the height of the floor under consideration in the 1997 UBC. I would be inclined to use the 1997 UBC. Regards, Harold Sprague The Neenan Company harold.sprague(--nospam--at)neenan.com -----Original Message----- From: Parkerres(--nospam--at)aol.com [mailto:Parkerres(--nospam--at)aol.com] Sent: Wednesday, January 20, 1999 3:00 PM To: seaint(--nospam--at)seaint.org Subject: Italian Seismic Loads To all: We are currently designing a piece of artwork to be hung from a ceiling of a musuem in Venice, Italy. I would really appreciate it if someone could tell me what is the correct seismic design coefficient for such a piece. We are currently basing our design on the 1994 UBC with Fp = ZICpWp = 0.80Wp, assuming Z = 0.40 for seismic zone 4, I = 1.0 for nonessentials, and Cp = 2.00 for nonstructural components "signs and billboards" or "exterior and interior ornamentations and appendages". Your input is appreciated. Ciao - Bruce Resnick, SE Parker Resnick Str. Eng.
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