Early in my career. I designed this very way. Especially in churches. Given the wording though Down along the slope, your spray pattern cannot comply.
Not sure if it was in then, or if I just didn’t know at the time… So hard wording dictates the only position given a slope exceeding 2/12” Just my read. R/ Matt Please rate our customer service<https://survey.medallia.com/?emailsignature&fc=3539&bg=Fire%20and%20Fabrication> Matthew J. Willis, CWBSP, CET Engineering Designer IV FERGUSON FIRE DESIGN, LLC A Wholly Owned Subsidiary of Ferguson Fire & Fabrication, LLC 401 N 5th Street Suite 448 Wausau, WI 54403 C: 307-236-8249 [email protected]<mailto:[email protected]> www.FergusonFire.com<http://www.fergusonfire.com/> From: Tony Silva <[email protected]> Sent: Saturday, April 1, 2023 11:03 AM To: Discussion list on issues relating to automatic fire sprinklers <[email protected]> Subject: [Sprinklerforum] Sidewall sprinklers for sloped roofs from NFPA 13, 2013 8.7.4.2<http://8.7.4.2> Deflector Orientation. 8.7.4.2.1 Deflectors of sprinklers shall be aligned parallel to ceilings or roofs. 8.7.4.2.2 Sidewall sprinklers, where installed under a sloped ceiling with a slope exceeding 2 in 12, shall be located at the high point of the slope and positioned to discharge downward along the slope. This section has been in NFPA 13, for a long time and has continued onto the current edition. As per this section, there is only one option for locating sidewall sprinklers under a steeply sloped roof. At the peak. to discharge downward along the slope. I have a situation where the sloped piping is along a wall with the floor area being covered with two sidewall sprinklers. The deflectors of both sprinklers are installed parallel with the roof slope, positioned to discharge across the slope.The uppermost sidewall is located within 3 feet of the peak. I have been told that this configuration is incorrect as it is not permitted in NFPA 13. Although it is not covered in NFPA, this orientation of sidewall sprinklers is shown in the residential sprinkler installation guides of all major manufacturers. Further, complying with 8.7.4.2<http://8.7.4.2> is problematic if the roof slopes both ways with the peak at the high point. Any thoughts / comments? Tony
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