And unnecessarily cost your employer (or yourself) the additional labor hours and materials vs. Todd's existing tap solution which is perfectly acceptable.
Todd, don't forget potential drain issue with the bottom of the 2.5" lower than the bottom of the 2". -----Original Message----- From: [email protected] [mailto:[email protected]] On Behalf Of [email protected] Sent: Thursday, November 11, 2010 8:36 AM To: [email protected] Subject: Re: reduce then increase pipe sizes From a. Fitters asspect. I would just cut the 3" main , roll groove it in place and install a 3" grooved tee then reduce the bull outlet Tom berry Precision fire protection Service/inspections [email protected]. Sent via DROID on Verizon Wireless -----Original message----- From: John Denhardt <[email protected]> To: "[email protected]" <[email protected]> Sent: Thu, Nov 11, 2010 13:59:36 GMT+00:00 Subject: Re: reduce then increase pipe sizes It is allowed. You are not missing anything. Ask the AHJ for a reference. John Sent from my BlackBerry� smartphone with Nextel Direct Connect -----Original Message----- From: Todd Williams <[email protected]> Sender: <[email protected]> Date: Thu, 11 Nov 2010 08:50:35 To: <[email protected]> Reply-To: <[email protected]> Subject: reduce then increase pipe sizes I am working on an existing system where we have to tie in a new 2-1/2" main into an existing 3". Since they do not make a 3x2-1/2 mechanical tee, that option is out. My proposal is to utilize an existing plugged 2" outlet, install a 2 x 0-6 TxG nipple and then increase to 2-1/2". It works hydraulically with 18+ psi left over (reducing the 2-1/2" main not an option hydraulically). I don't see anything in the Code that states that it is not allowed. However, the AHJ says it isn't. Before I argue the point, am I missing something? Todd G. Williams, PE Fire Protection Design/Consulting Stonington, CT 860.535.2080 www.fpdc.com _______________________________________________ Sprinklerforum mailing list [email protected] http://fireball.firesprinkler.org/mailman/listinfo/sprinklerforum For Technical Assistance, send an email to: [email protected] To Unsubscribe, send an email to:[email protected] (Put the word unsubscribe in the subject field) _______________________________________________ Sprinklerforum mailing list [email protected] http://fireball.firesprinkler.org/mailman/listinfo/sprinklerforum For Technical Assistance, send an email to: [email protected] To Unsubscribe, send an email to:[email protected] (Put the word unsubscribe in the subject field) _______________________________________________ Sprinklerforum mailing list [email protected] http://fireball.firesprinkler.org/mailman/listinfo/sprinklerforum For Technical Assistance, send an email to: [email protected] To Unsubscribe, send an email to:[email protected] (Put the word unsubscribe in the subject field) _______________________________________________ Sprinklerforum mailing list [email protected] http://fireball.firesprinkler.org/mailman/listinfo/sprinklerforum For Technical Assistance, send an email to: [email protected] To Unsubscribe, send an email to:[email protected] (Put the word unsubscribe in the subject field)
