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
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sprinklerforum-bo Subject
[EMAIL PROTECTED] RE: Gang Drain for Attic Dry System
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06/28/2007 09:32
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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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