Thom,
I think I mentioned overkill in my previous post. You can't protect
from every possibility. My question was based on a situation where
you get a 20 psi drop at a flow of 500 gpm before the pump kicks in.
What impact would this have on sprinkler performance if the demand
exceeded 500 gpm? The answer may be none, but I think it is a
question worth asking.
Todd
At 01:46 PM 12/1/2008, you wrote:
In that case a 2 million gallon tank and both electric and diesel fire pumps
and don't calc a design area, do the whole building flowing, and install a
loop underground supply and new access road on all sides, wet horizontal
standpipes with hose connections at every entry/exit point. Then build it
out of all fire proof construction, and allow no flammable or combustible
materials inside the building, make it bomb proof, flood proof, tornado
proof and don't forget the seismic.
Just how far do you want to go to protect your client from any possibility?
(And the eternal question, "At what point does the owner say this is
ridiculous!" and get someone else that's "More Reasonable".)
All these things are in the NFPA box of tools, but should we try to apply
them to every project?
Thom McMahon, SET
Firetech, Inc.
2560 Copper Ridge Dr
P.O. Box 882136
Steamboat Springs, CO 80488
Tel: 970-879-7952
Fax: 970-879-7926
-----Original Message-----
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED] On Behalf Of Todd Williams
Sent: Monday, December 01, 2008 11:27 AM
I always understood that it is our responsibility to provide a system that
protects a property from catastrophic fire damage. And that the "best
interest of the property owner or client" is for us to meet that goal. If it
results in bigger pipe sizes, larger orifices and serious overflow, then so
be it. We should not go overboard, but should take varying circumstances
into account that may be outside of the strict NFPA box. Just my
opinion.......
Todd G. Williams, PE
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Todd G. Williams, PE
Fire Protection Design/Consulting
Stonington, Connecticut
www.fpdc.com
860.535.2080
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