Todd:
Maybe I'm just not understanding your full situation, but it would seem that
lets say you have 100 Psi at the top and 190 Psi at the first floor and 175
Psi at the second floor. (Nice high first floor for conventions or meeting
rooms restaurants ect.) I would look at the XH pipe up to the 2nd floor, Prv
on hose stations on the first floor only, and 250Psi rated heads and system
for the first floor.
Does that make sense, as opposed to a Diesel, if an Elect. will work?
Thom McMahon
Firetech, Inc.
2560 Copper Ridge Dr
Steamboat Springs, CO 80488-2136
Tel: 970-879-7952
Fax: 970-879-7926
----- Original Message -----
From: "Todd Williams - work" <[EMAIL PROTECTED]>
To: <[email protected]>
Sent: Wednesday, February 07, 2007 7:22 AM
Subject: pump tricks
I seem to be running into several situations lately where there is a very
fine balancing act between meeting the 100 psi at the top outlet of the
standpipe and not exceeding 175 psi at the base of the riser. (6 story
hotels are a good example) Does anybody have any good ideas they'd care to
share on making these work? I'd like to limit the use of extra-heavy pipe
and fitting (especially larger sizes) and PRVs. I have several tricks up my
sleeve, but I'm running out of sleeves.
Todd
Todd G. Williams, PE
Fire Protection Design/Consulting
Stonington, Connecticut
860-535-2080
www.fpdc.com
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