Thank you. Does the same effect occur next to a duct we wonder.
The ceiling area forms a pocket that is 4’ from an adjacent wall 4Ft away to sprinkler that is next to a duct. Art From: Sprinklerforum [mailto:sprinklerforum-boun...@lists.firesprinkler.org] On Behalf Of Larry Keeping Sent: Thursday, October 20, 2016 4:14 PM To: sprinklerforum@lists.firesprinkler.org Subject: RE: Sprikler obstruction. >From the 1984 Technical Committee Reports for Proposal 13-401: “SUBSTANTIATION Guidance is needed for the placement of standard sprinklers (ie non sidewall heads) in relation to their horizontal proximity to walls. Dead air spaces in corners can effect a sprinkler’s operation time. The minimum clearance for sidewall was used (NFPA 13 4-5.4). A recent installation in a 300 ft long by 9 ft wide corridor caused this concern when the sprinklers were located only 1 in off the wall.” Larry Keeping From: Sprinklerforum [mailto:sprinklerforum-boun...@lists.firesprinkler.org] On Behalf Of Art Tiroly Sent: October-20-16 9:42 AM To: sprinklerforum@lists.firesprinkler.org Subject: RE: Sprikler obstruction. What is the reasoning for the 4” minimum space to a wall or duct? It isn’t activation or spray pattern since sidewall sprinklers operate in a recessed escutcheon. Art at ATCO Fire From: Sprinklerforum [mailto:sprinklerforum-boun...@lists.firesprinkler.org] On Behalf Of rongreenman . Sent: Wednesday, October 19, 2016 5:32 PM To: sprinklerforum@lists.firesprinkler.org Subject: Re: Sprikler obstruction. For standard spray sprinklers: 4" from the duct unless a sidewall (you could use a vertical type) and no closer the 6' from the next closest sprinkler. The rules are pretty clear. Unless you can find a sprinkler who's listing negates these rules you're stuck. On Wed, Oct 19, 2016 at 2:26 PM, Art Tiroly <atir...@atcofirepro.com> wrote: 12x16” Duct is tight to ceiling. Up right Sprinkler is about 6” from ceiling on exposed pipe. Fire Marshall’s issue is that the sprinkler is about 2.5” from the face of the duct. Adjacent sprinkler is about 6’-0 away. Art From: Sprinklerforum [mailto:sprinklerforum-boun...@lists.firesprinkler.org] On Behalf Of Cesar Lira Sent: Wednesday, October 19, 2016 4:20 PM To: sprinklerforum@lists.firesprinkler.org Subject: RE: Sprikler obstruction. What size is the duct and what is the distance between the sprinkler and the top of duct. De: Sprinklerforum [mailto:sprinklerforum-boun...@lists.firesprinkler.org] En nombre de IPA Enviado el: miércoles, 19 de octubre de 2016 02:02 p. m. Para: sprinklerforum@lists.firesprinkler.org Asunto: Re: Sprikler obstruction. Is the duct below the sprinkler deflector? On Wed, Oct 19, 2016 at 12:25 PM, Art Tiroly <atir...@atcofirepro.com> wrote: Does an upright sprinkler have to be moved when a new duct was added less than 4” away from the existing sprinkler. I understand when a new sprinkler is installed it shall be 4” away from a wall. I have adequate coverage from the adjacent sprinkler in this basement meeting room space. Art Tiroly ATCO Fire Protection/Tiroly 24400 Highland Rd CLE 44143 216-621-8899 216-570-7030 cell _____ <https://www.avast.com/sig-email?utm_medium=email&utm_source=link&utm_campaign=sig-email&utm_content=emailclient> Imagen quitada por el remitente. Avast logo This email has been checked for viruses by Avast antivirus software. www.avast.com <https://www.avast.com/sig-email?utm_medium=email&utm_source=link&utm_campaign=sig-email&utm_content=emailclient> _______________________________________________ Sprinklerforum mailing list Sprinklerforum@lists.firesprinkler.org http://lists.firesprinkler.org/listinfo.cgi/sprinklerforum-firesprinkler.org _____ <https://www.avast.com/sig-email?utm_medium=email&utm_source=link&utm_campaign=sig-email&utm_content=emailclient> Image removed by sender. Avast logo This email has been checked for viruses by Avast antivirus software. www.avast.com <https://www.avast.com/sig-email?utm_medium=email&utm_source=link&utm_campaign=sig-email&utm_content=emailclient> _______________________________________________ Sprinklerforum mailing list Sprinklerforum@lists.firesprinkler.org http://lists.firesprinkler.org/listinfo.cgi/sprinklerforum-firesprinkler.org -- Ron Greenman 4110 Olson Dr., NW Gig Harbor, WA 98335 rongreen...@gmail.com 253.576.9700 The Universe is monstrously indifferent to the presence of man. -Werner Herzog, screenwriter, film director, author, actor and opera director (1942-) --- This email has been checked for viruses by Avast antivirus software. https://www.avast.com/antivirus
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