If it is a drain line, you would include it in the hydraulic calculations
WHY??
Jeff Hewitt, PE, SET, SFPE (Prof. Member)
Corporate Engineer
Bi-State Fire Protection Corporation
636-946-0011
636-946-5172 (FAX)
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----- Original Message -----
From: <[EMAIL PROTECTED]>
To: <[email protected]>
Cc: <[email protected]>;
<[EMAIL PROTECTED]>
Sent: Thursday, June 28, 2007 9:39 AM
Subject: RE: Gang Drain for Attic Dry System
Even though the 1 inch pipe does not seem to increase the gridding effect,
it still must be provided in the hydraulic calculations where it can end
up
show some surprising effects.
Thank You
Rahe Loftin, P.E.
Region 7 - GSA
Office - 817-978-7299
Fax - 817-978-8644
Cell - 817-371-3102
"Matthew J.
Willis" To
<[EMAIL PROTECTED] [email protected]
fp.com> cc
Sent by:
sprinklerforum-bo Subject
[EMAIL PROTECTED] RE: Gang Drain for Attic Dry System
er.org
06/28/2007 09:32
AM
Please respond to
[EMAIL PROTECTED]
resprinkler.org
Yes... But see 8.15.2.5.3.4 (02). The handbook gives a good commentary if
available. The piping is limited to 1", so you do not increase the
gridding
effect.
R/
Matt
Matthew J. Willis
Living Water Fire Protection, LLC.
1160 McKenzie Rd.
PO Box 877
Cantonment, FL. 32533
850-937-1850 Voice
850-937-1852 Facsimile
[EMAIL PROTECTED]
----- >-----Original Message-----
----- >From: [EMAIL PROTECTED]
----- >[mailto:[EMAIL PROTECTED] On
----- >Behalf Of [EMAIL PROTECTED]
----- >Sent: Thursday, June 28, 2007 9:24 AM
----- >To: [email protected]
----- >Subject: Gang Drain for Attic Dry System
----- >
----- >
----- >This question was just posed to me by my Branch Manager -
----- >
----- >In an attic dry system with each branch line ending in
----- >what amounts to a "low?point", if the designer
----- >interconnected each branch line to?a 1-inch gang drain,
----- >would that not, in effect, create a gridded dry system?
----- >
----- >Ray Hoshall
----- >Service Manager
----- >FIRE TECH SERVICES, INC.
----- >
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