Sitting on a plane, so don't have 13 in front of me, but I don't think it meets the 3x C or D rule. Seems obstructed to me, at least as I'm seeing it in my head.
Steve <div>-------- Original message --------</div><div>From: [email protected] </div><div>Date:10/16/2014 5:46 AM (GMT-08:00) </div><div>To: [email protected] </div><div>Subject: RE: Obstructions </div><div> </div>Hi David, My opinion is along the same lines as Tim's. Also, you can reference the picture shown in A.8.5.5.1 of NFPA 13 (2010) which shows the pattern development of the sprinkler head. If you insert your light into this picture at 10" below and 6" wide, you can clearly see that you are getting water on both sides of the obstruction as stated in A.8.6.5.2.1.4. Thanks, Sean Van Gaal Project Manager Nicet III Water-Based System Layout #124801 P: (623) 580-7818 C: (602) 400-4512 F: (623) 434-3154 [email protected] AERO Automatic Sprinkler Co. 21605 N. Central Ave. Phoenix, AZ, 85024 (623) 580-7800 aerofire.com -----Original Message----- From: Sprinklerforum [mailto:[email protected]] On Behalf Of Tim Stone Sent: Thursday, October 16, 2014 5:40 AM To: [email protected] Subject: RE: Obstructions David, I am referencing NFPA 13, 2010 ed. Chapter 8.6.5.2, Obstructions to sprinkler discharge. If Light or Ordinary Hazard Occupancy you can apply 8.6.5.2.1.4, Structural members only. A.8.6.5.2.1.4, discusses that nonstructural elements are exempt but must also comply with "Beam Rule" 8.6.5.1.2 and "Wide Obstruction Rule" 8.6.5.3.3. In my opinion based on information you provide below and reviewing NFPA 13 for Light and or Ordinary occupancy the sprinkler location is OK. Regards, G. Tim Stone G. Tim Stone Consulting, LLC NICET Level III Engineering Technician Fire Protection Sprinkler Design and Consulting Services 117 Old Stage Rd. - Essex Jct., VT. 05452 CELL: (802) 373-0638 TEL: (802) 434-2968 Fax: (802) 434-4343 [email protected] -----Original Message----- From: Sprinklerforum [mailto:[email protected]] On Behalf Of Smith, David L.(FAC) Sent: Thursday, October 16, 2014 8:18 AM To: [email protected] Subject: Obstructions Good Morning All; Obstructions, Obstructions, Obstructions; Wow, this is one subject that's worth arguing sometimes. I've been in a discussion on whether a light that is 4' long x 6" wide hanging under a sprinkler head less than 18" from the deflector is an obstruction or not. (It's right at 10") Could you all pipe in on what your thoughts are? David L. Smith Fire Protection Maintenance City of Lakeland Public Works / Facilities 228 S. Massachusetts Ave. Lakeland, Fl. 33801 Office: 863-834-2380 Fax: 863-834-2284 Cell: 863-559-0903 [email protected]<mailto:[email protected]> ________________________________ PUBLIC RECORDS NOTICE: All e-mail sent to and received from the City of Lakeland, Florida, including e-mail addresses and content, are subject to the provisions of the Florida Public Records Law, Florida Statute Chapter 119, and may be subject to disclosure. _______________________________________________ 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 _______________________________________________ Sprinklerforum mailing list [email protected] http://lists.firesprinkler.org/listinfo.cgi/sprinklerforum-firesprinkler.org
