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RE: CBC Vs. UBC Do I need another Code?

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Thank you,
This confirms my opinions as I submitted a preliminary scope of work
including the appropriate codes I intended to use. The City of Santa Ana is
involved on the renovation of this building, but it is not an OSHPD or DSA
design. They are converting the URM building into the Orange County Center
for Contemporary Arts. It has been going back and forth
Retrofit-Remodel-Repair-Retrofit and Final design for over four years. I am
finally at the last stage and it looks like this might actually become a

Thanks for the comments.

-----Original Message-----
From: Tjb5424744(--nospam--at) [mailto:Tjb5424744(--nospam--at)]
Sent: Friday, November 20, 1998 1:10 PM
To: seaint(--nospam--at)
Subject: Re: CBC Vs. UBC Do I need another Code?

As for structural provisions for a project no covered by DSA of OSHPD, the
requirements are basically the same for structural design.  It is symantics.
California adopts the state building code as Title 24, California Code of
Regulations.  The latest in effect being the 1995 California Building Code
(CBC) which, for structural design, is the 1994 UBC with California
Amendments.  The local jurisdictions adopt the CBC with local amendments.
Unless the local amendments specifically require seismic retrofit and
the design standard to be used, the engineer is free to design to any
nationally recognized standard.

Your choice of the Uniform Building Code for Building Conservation (UBCB) is
founded for unreiforced masonry.  If this is a tilt-up anchorage retrofit,
provisions of  L.A. Division 91 or 1996 UBC Supplement may be appropriate.
For other types of construction maybe the CBC (UBC) would be correct.

Keep in mind, as with all codes, they are a minimum design standard to
potential collapse and may not protect the building from needing to be
demolished after a minor earthquake.  This is what perfomance based seismic
design is all about.  Forget Ricter Scale!!  Ask the owner what (s)he
for the expenditure of this money on retrofit.  See if (s)he is willing to
spend more (or less) for other results after the earthquake.

Ted Beckwith, RCE