It sounds to me like the definition of “unused attic” is purposely vague (and note it is in the Appendix and not main Standard). The main definition of Light Hazard is “spaces of low quantity and combustibility of contents”. That is the question you need to answer. Does the presence of this specific air handling equipment raise it above this threthold? Todd G Williams, PE Fire Protection Design/Consulting Stonington, CT 860-535-2080 (tel:860-535-2080) (ofc) 860-554-7054 (tel:860-554-7054) (fax) 860-608-4559 (tel:860-608-4559) (cell)
> > On Dec 11, 2023 at 3:31 PM, <Anthony Johnson > (mailto:mountainfirepr...@gmail.com)> wrote: > > > > My understanding has always been that it's referring to 'used by the > occupants' of the building, not the presence of systems necessary to the > function of the building. If the presence of HVAC turns it into a "used" > space then you would also have to consider it "used" even if there were only > electrical or communication wires feeding fixtures or devices. That's the way > I see it anyway. > > > Anthony > > > > > > > > > > > Virus-free.www.avg.com > (http://www.avg.com/email-signature?utm_medium=email&utm_source=link&utm_campaign=sig-email&utm_content=webmail) > > > > > > > > On Mon, Dec 11, 2023 at 10:09 AM <tston...@comcast.net > (mailto:tston...@comcast.net)> wrote: > > > > > > > > > > > > > I am working on a unheated Attic of 6800 SF wood framing with a Ridge Pole > > 29’ above the upper floor ceiling structure. The structure was built in > > 1893. > > > > > > > > The Building is being renovated which includes new HVAC with air handling > > equipment to be installed in the Attic. No heating equipment. The attic > > will not be used for Storage. > > > > > > > > > > > > > > > > Will the presence of Air Handling equipment negate the definition of an > > “unused Attic”? Does the presence of any HVAC equipment put the occupancy > > into Ordinary Hazard? > > > > > > > > > > > > > > > > If there is a definition in NFPA FOR “Unused Attic”, I am unable to find it. > > > > > > > > > > > > > > > > > > > > > > > > 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 > > > > > > > > tston...@comcast.net > > (mailto:tston...@comcast.net) > > > > > > > > > > > > > > > > > > _________________________________________________________ > > SprinklerForum mailing list: > > > > https://lists.firesprinkler.org/list/sprinklerforum.lists.firesprinkler.org > > To unsubscribe send an email to > > sprinklerforum-le...@lists.firesprinkler.org > > (mailto:sprinklerforum-le...@lists.firesprinkler.org) > > _________________________________________________________ SprinklerForum > > mailing list: > > https://lists.firesprinkler.org/list/sprinklerforum.lists.firesprinkler.org > > To unsubscribe send an email to > > sprinklerforum-le...@lists.firesprinkler.org
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