Brian I'll email you about getting those details. Not that I plan to but I was insinuating that to a HVAC guy on a project. Mostly to be funny because we couldn't all fit in the space. And he's already having to do "unconventional" (i.e. using silicon as a sealer) things to his system at the request of the AHJ. This just added to it.
But I definitely see a concern of condensation and a sleeve being a must. Aaron M. Peck +1 (202) 407-9079 Skype Sent from my iPad On Jun 13, 2013, at 12:27 AM, Brian Harris <[email protected]> wrote: > I have a pdf file showing details of the "approved" way to do this I got from > SMACNA a few years back, I've never actually done it but If you'd like a copy > just email me off forum at "[email protected]" > > Brian Harris, CET > BVS Systems Inc. > bvssytemsinc.com > > -----Original Message----- > From: [email protected] > [mailto:[email protected]] On Behalf Of Richard > Lindner > Sent: Wednesday, June 12, 2013 1:22 PM > To: [email protected] > Subject: Re: routing sprinkler pipe through a duct > > There is a fitting for ductwork to deal with the issue when pipes pass > through the ductwork. Looks like a teardrop constructed of sheetmetal and is > provided to stop issues such as the whistling. Also, sealing the ductwork > openings is a necessity. > > > On Wed, Jun 12, 2013 at 1:12 PM, Tom Wellen <[email protected]>wrote: > >> I hear of one instance where this was done where after the >> installation, a whistle developed from the moving air. >> >> Tom Wellen >> >> >> On Jun 12, 2013, at 11:48 AM, <[email protected]> wrote: >> >>> Yeah you read that right. >>> >>> I had a query regarding running a 1" sprinkler drop through a duct >>> to >> provide sprinklers below. The client is afraid that running the line >> beside the duct will look ugly and doesn't want to do that. >>> >>> The area does have a finished ceiling and the duct is exposed and >> extends to about 2ft below the ceiling. Essentially the duct is >> similar to a soffit as far as obstruction rules are concerned. The >> duct is just over 48" in width. >>> >>> I suggested just spacing the sprinklers beside the run of duct as if >>> you >> were dealing with a soffit but for some reason the idea of punching >> through the duct is more attractive. >>> >>> I couldn't find any prohibitive language in NFPA 13 that would >>> prevent >> this. >>> >>> Anyone know of anything or any text that expressly prohibits this? >>> >>> Craig L. Prahl, CET >>> Fire Protection >>> CH2MHILL >>> Lockwood Greene >>> 1500 International Drive >>> Spartanburg, SC 29304-0491 >>> Direct - 864.599.4102 >>> Fax - 864.599.8439 >>> CH2MHILL Extension 74102 >>> [email protected] >>> >>> _______________________________________________ >>> Sprinklerforum mailing list >>> [email protected] >> http://lists.firesprinkler.org/listinfo.cgi/sprinklerforum-firesprinkl >> er.org >> >> _______________________________________________ >> Sprinklerforum mailing list >> [email protected] >> >> http://lists.firesprinkler.org/listinfo.cgi/sprinklerforum-firesprinkl >> er.org > _______________________________________________ > Sprinklerforum mailing list > [email protected] > http://lists.firesprinkler.org/listinfo.cgi/sprinklerforum-firesprinkler.org > _______________________________________________ > Sprinklerforum mailing list > [email protected] > http://lists.firesprinkler.org/listinfo.cgi/sprinklerforum-firesprinkler.org _______________________________________________ Sprinklerforum mailing list [email protected] http://lists.firesprinkler.org/listinfo.cgi/sprinklerforum-firesprinkler.org
