You are not crazy. It could be a rounding error but even at 1160 there have to 
be no friction loss between flowing nodes.


Ron Fletcher
Aero Automatic
Phoenix, AZ




-----Original Message-----
From: [email protected] 
[mailto:[email protected]] On Behalf Of Bill Brooks
Sent: Thursday, December 16, 2010 2:23 PM
To: [email protected]
Subject: 0.58 over 2000

Reviewing a hydraulic calc for a 0.58 over 2000 gridded warehouse system.
All seemed OK until I reached the BOR flow of 1143 gpm.  From this I assume
the selected design area isn't correct since there's no way a 0.58 over 2000
system should flow less than 1160 gpm.  I've never heard of hydraulic
imbalance that results in lower overall flow.  Am I crazy or is there a new
version of sprinkler hydraulics out there?

Bill Brooks

William N. Brooks, P.E.
Brooks Fire Protection Engineering Inc.


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