Look at NFPA 13 (2019 ed) FIGURE A.9.5.5.3.1.2 Sprinkler Location Below Obstruction.
The sprinkler is no longer required to be literally beneath the obstruction. As long as it is within 3 of the edge and between 1 and 12 below, it satisfies the requirement for beneath (under). Thank you, Bob Knight, CET III Fire by Knight, LLC 208-318-3057 From: Luis Perea [mailto:[email protected]] Sent: Wednesday, October 05, 2022 3:19 PM To: 'Discussion list on issues relating to automatic fire sprinklers' Subject: [Sprinklerforum] ESFR Sprinkler Under Obstruction Hi everyone, Per NFPA-13 i can´t find if its mandatory to install a sprinkler under the HVAC extraction Grill, the size of the duct it is clearly an obstruction and the option i have been thinking is to install the sprinkler with a baffle under the grill. Does anyone know if this is correct or have any other solution? Thank you. LRPF -- This email has been checked for viruses by AVG antivirus software. www.avg.com
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