The primary drive is typically lead in isolation, if you aren't providing a PIV or wall post I believe your next logical progression in the NFPA 24 "lead in" valve list is valves in a fire rated room accessible from outside. But the AHJ has latitude not to require that. Typically we just insist on PIVs on the underground and no one has an issue and we install everything as you describe.
Mike Morey CFPS 3229 * NICET S.E.T. 123677 Project Manager * Fire Protection Group Shambaugh & Son, LP an EMCOR Company 7614 Opportunity Drive * Fort Wayne, IN * 46825 direct 260.487.7824 / cell 260.417.0625 / fax 260.487.7991 email [email protected] [cid:[email protected]] From: Kyle.Montgomery <[email protected]> Sent: Thursday, December 22, 2022 1:48 PM To: [email protected] Subject: [Sprinklerforum] Riser Rooms What code section(s) determines if/when sprinkler system control valves (system risers) need to be located in a riser room? Is it ever actually a requirement, or just a preference? And what about proximity to exterior access doors? The standard ZjQcmQRYFpfptBannerStart Be Careful With This Message The sender's identity could not be verified and someone may be impersonating the sender. ZjQcmQRYFpfptBannerEnd What code section(s) determines if/when sprinkler system control valves (system risers) need to be located in a riser room? Is it ever actually a requirement, or just a preference? And what about proximity to exterior access doors? The standard for speculative warehouses in my neck of the woods (desert) is generally to have risers in the pump room, or to have one or more banks of risers positioned around the building, generally next to a man door. But, do the risers have to be immediately adjacent to a door? Or within a certain maximum distance? Are there instances where a dedicated room is required? I realize many jurisdictions might have their own amendments and/or interpretations, but I'm just wondering from a national code standpoint what the driving factors are. Thanks. Kyle Montgomery [cid:[email protected]] Aero Automatic Sprinkler Co. 21605 N. Central Ave. Phoenix, AZ 85024 Direct: 623.580.7820 Cell: 602.763.4736 [email protected]<mailto:[email protected]> This message is for the named person's use only. It may contain confidential, proprietary or legally privileged information. No confidentiality or privilege is waived or lost by any mistransmission. If you receive this message in error, please immediately delete it and all copies of it from your system, destroy any hard copies of it and notify the sender. You must not, directly or indirectly, use, disclose, distribute, print, or copy any part of this message if you are not the intended recipient.
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