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RE: Definition of A sub B in Rho evaluation

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Yeah. What he said.

Bill Allen, S.E. (CA #2607)
ALLEN DESIGNS
Laguna Niguel, CA
http://www.AllenDesigns.com 

||-----Original Message-----
||From: Charles Greenlaw [mailto:cgreenlaw(--nospam--at)speedlink.com]
||Sent: Friday, July 14, 2000 5:04 PM
||To: seaint(--nospam--at)seaint.org
||Cc: GSearer(--nospam--at)wje.com
||Subject: RE: Definition of A sub B in Rho evaluation
||
||
||Ah, yes, nobility. 
||
||Funny, though, what goes around comes around. 
||
||The origins and inplementation of the rho factor were as 
||bereft of nobility,
||and as coercively pushed without deference to 
||well-credentialed, cautious
||skeptics, as any substantive seismic code addition in memory. 
||It remains a
||sullying blight on the sponsoring SE Assn which let such 
||slipshoddery pass. 
||
||General Patton noted that it is not what we say, but what we 
||fail to say,
||that lets trouble happen and then get worse. 
||
||It may be of interest that there is an expertly compiled, 13-page
||Rho-damning paper under consideration by Seismology Committee 
||of SEAONC,
||authored by committee member Gary Searer SE, of Wiss Janney 
||Elstner, and
||which concludes that for good cause the Rho factor should be 
||immediately
||striken from code. This paper has 24 reviewing and co-signing 
||engineers,
||including Prof V.V. Bertero of UC Berkeley, a noted exponent 
||of redundancy
||in seismic systems. 
||
||Now I'm tolerant of the fact that many people are willing followers of
||controlling, coercive religious sects. Often they find 
||comfort in being told
||by "authority" in detail how to lead their lives, rather than 
||figure it out
||for themselves from first principles. But engineering 
||purports to be founded
||in open rationality and scientific method, not in dogma and ritual and
||downwardly imposed authoritarian heirarchy. Separation of church and
||engineering, in the attitude and methodology sense, should be 
||afforded the
||same respect the equivalent gets in our US Constitution. It 
||took a little
||roughness and a lapse of nobility to get things to where we 
||could have our
||own constitution, and more yet on occasion to preserve it. 
||
||Charles O. Greenlaw SE  Sacramento CA
||---------------------------------------------------
||At 08:04 AM 07/14/2000 -0700, you wrote:
||>Thanks Paul
||>It is refreshing to know that nobility is not dead! 
||>I also want to add that there are design examples in the 
||Seismic Design
||>Manuals (for 1997 UBC) published by SEAOC.  They include rho 
||calculations.
||>Sharon
||>
||>> -----Original Message-----
||>> From:	Paul_Reilly(--nospam--at)dot.ca.gov [SMTP:Paul_Reilly(--nospam--at)dot.ca.gov]
||>> Sent:	Thursday, July 13, 2000 8:01 AM
||>> To:	seaint(--nospam--at)seaint.org
||>> Subject:	RE: Definition of A sub B in Rho evaluation
||>> 
||>> 
||>> Ouch B & C.  Unnecessary roughness?  My interpretation for the code
||>> required standard of practice is 1936.  I would use 1600, 
||just because.
||>
||
||
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