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Re: Rationale for Sprinklers on Trucks...

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But isn't the test fire used for the 2 hr rating significantly less intense than a gasoline fueled fire? The fire at the maze burned for nearly two hours.
Bill Cain, SE
Berkeley CA
-----Original Message-----
From: Ben.Yousefi(--nospam--at)SMGOV.NET
To: seaint(--nospam--at)
Sent: Thu, 3 May 2007 11:01 AM
Subject: RE: Rationale for Sprinklers on Trucks...

Another idea worth considering is fire retardant paint on the steel. Intumescent paint has been used effectively in structures for along time. You can get rating of up to 2 hours with it. And, it won’t cover the steel like monokote would, so it can still be visually inspected.
Ben Yousefi, SE
Santa Monica, CA

From: Benjamin Maxwell [mailto:enginerd666(--nospam--at)]
Sent: Thursday, May 03, 2007 10:36 AM
To: seaint(--nospam--at)
Subject: RE: Rationale for Sprinklers on Trucks...
Stupid idea, but how about requiring fire suppression systems on the tanker trucks themselves?  Put the solution, if deemed necessary, on the cause of the problem, not the receiving end.  Government agencies may be cash strapped, but we all know the oil companies aren't.


Donald Bruckman <bruckmandesign(--nospam--at)> wrote:
I’m not even sure any fireproofing or fire suppression system could have overcome 8600 gallons of burning gasoline anyway.  A system capable of that would have to cost a ton of money for a very rare occurrence.  Vehicle fires occur on overpasses all the time and do not bring down the span.  This was an anomaly.

From: Fred Turner [mailto:turner(--nospam--at)]
Sent: Thursday, May 03, 2007 8:48 AM
To: seaint(--nospam--at)
Subject: Rationale for Sprinklers on Steel Bridges
Since no one died in the MacArthur Maze Fire it doesn't seem appropriate to rationalize the need for sprinklers on bridges on the basis that building codes require sprinklers in buildings to meet a life safety performance objective at this juncture. The more salient issue is that choke points exist in our transportation systems that, if disrupted, will cause widespread economic losses. Attention to enhancing redundancy and reliability of these systems is needed. Fire protection systems may not provide the best approach to manage this type of risk. The San Francisco Bay Area is fortunate that redundancy in the form of alternative routes already exist in the freeway system around the MacArthur Maze damage. We may not be so fortunate after future incidents. 
Fred Turner, Staff Structural Engineer, California Seismic Safety Commission, a public policy advisory agency, Turner(--nospam--at), 1755 Creekside Oaks Dr. #100 Sacramento, CA 95833 Phone: 916-263-5506 Ext. 227 or 916-263-0582 Fax: 916-263-0594 

Benjamin H. Maxwell, S.E.

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