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Mitsurati
Commentator

Join Date: Mar 2009
Location: Southern California
Posts: 97
Good Answers: 15

Seismic Switchgear Requirements in California

10/20/2009 3:36 PM

I've heard that the seismic zone 4 requirements are obsolete in California, replaced by IBC 2006. I am looking at installing a 27kV vacuum breaker, 3 sections with utility metering, and I am wondering what will be required as far as seismic certification. This is going into a water treatment plant near San Francisco. Is certification even required for this, or do I just need anchoring calculations?
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Pathfinder Tags: california IBC seismic switchgear zone 4
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GRAY HAIRED OLD GOAT
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Join Date: Nov 2008
Location: US - TEXAS
Posts: 196
Good Answers: 18
#1

Re: Seismic Switchgear Requirements in California

10/21/2009 6:28 AM

You need anchoring and foundation calculations.
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dda
Active Contributor

Join Date: Jul 2007
Location: Los Angeles
Posts: 23
#2

Re: Seismic Switchgear Requirements in California

10/21/2009 12:29 PM

The requirement would be Seismic Certification in accordance with IBC 2006.

I did a job at a refinery with this requirement. We had a California Licenced PE do the calculations/certifications. We provided detailed shop drawings of the equipment. We got a nice report with anchor bolt requirements. In addition they required that a few more nuts and bolts be used to bolt the adjacent sections together. It cost around 5-6K for the certification.
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dolfan
Participant

Join Date: Nov 2009
Posts: 1
#3
In reply to #2

Re: Seismic Switchgear Requirements in California

11/11/2009 2:09 PM

Hello dda,

Can you give me the contact info for the California Licenced PE that did your calculations/certifications. We need need certification by a California Licenced PE for the switchgear enclosure we are designing/contructing. Also let me know if you and or your company was satisfied with their performance.
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dda
Active Contributor

Join Date: Jul 2007
Location: Los Angeles
Posts: 23
#4
In reply to #3

Re: Seismic Switchgear Requirements in California

11/11/2009 3:06 PM

We probably should take this off forum

You can contact me at this disposable E-mail address pigdogleft2000-cr4@yahoo.com. I will be glad to help you all I can
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dda (2); dolfan (1); GRAY HAIRED OLD GOAT (1)

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