Brian, There are much smarter people on here than me, but I have always understood that it means the Ordinary Temp heads are acceptable in any distance in relation to the Diffuser except the 1ft radius from the edge extending 1 in below to 2'-6" above for the downward discharge as noted in the table. Similar for the Horizontal discharge per table 8.3.2.5(a).
Micah Davis, SET NICET #124745 Water Based Systems Layout, Level IV Dynamic Fire Designs Mail: [email protected] Mobile: 931-242-1299 www.dynamicfiredesigns.com<http://dynamicfiredesigns.com/> Dynamic Fire Designs • 247 Winthrop Dr. • Spring Hill • FL • 34609 This message is confidential. It may also be privileged or otherwise protected by work product immunity or other legal rules. If you have received it by mistake, please let us know by e-mail reply and delete it from your system; you may not copy this message or disclose its contents to anyone. The integrity and security of this message cannot be guaranteed on the Internet. ________________________________ From: Sprinklerforum <[email protected]> on behalf of Brian Harris <[email protected]> Sent: Monday, November 19, 2018 2:32 PM To: [email protected] Subject: Heads Near Diffusers Can someone clarify the verbiage of 8.3.2.5(2) (NFPA13 2013) in the Ordinary-Temp column for heads next to a diffuser ( c)? It says “Any distance except as shown under Intermediate-Temperature Rating Column”. I have an AHJ saying that any head within 30” of a diffuser must be an Intermediate-Temperature head. Brian Harris, CET BVS Systems Inc. Design Manager bvssystemsinc.com<http://bvssystemsinc.com/> Phone: 704.896.9989 Fax: 704.896.1935
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