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Re: Occupancy Category History

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Harold, can I just give you a desk next to me?  Thanks again!  If you keep this up I will need to buy you far more than a pitcher of beer.


On Jan 4, 2008 9:36 AM, Harold Sprague < spraguehope(--nospam--at)> wrote:
There have been occupancies for a long time for fire protection.  Structural loading picked it up a bit later. 
It was not in ANSI A58.1-1972, but it appeared in ANSI A58.1-1982.  The I factor is generally not in the building codes (BOCA, UBC, SBC) in the 70's vintage.  BTW there were 5 members of the seismic committee. 
UBC: I believe that UBC picked it up on the 1979 issue (I don't have that one).  I have the 1981 and it did not have a bar on the I table to indicate a revision.  It is not in the 1973 UBC. 

BOCA:  Not in the '81, but is included in the '87 and indicates a revision bar. 
SBC: It is contained in the '88 which is the oldest that I have. 

Harold Sprague

Date: Fri, 4 Jan 2008 08:38:09 -0700
From: jake.watson1(--nospam--at)
To: seaint(--nospam--at)
Subject: Occupancy Category History

I need a history lesson.  Does anyone remember approximately when the UBC introduced the concept of "Occupancy Category"?  When did we start getting different I values for different uses?

Jake Watson, S.E.
Salt Lake City, UT

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