Dick, Todd & Anthony,
Thank you for your feedback. I ask because I am hoping to Design a Dry
system using Specific Application Attic heads. Based on received comments I
believe the Attic heads should be fine.
Regards,
G. Tim Stone
G. Tim Stone Consulting, LLC
NICET Level III
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
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
Tim
The equipment shouldn't be an issue if only service people
are accessing the space. The issue is those old buildings have walk up
stairs and floors which someone will find it is a great space for storage.
If a stepladder is needed to get into the attic you
The 2022 edition of NFPA 13 section A.4.3.2 (16) lists unused attics under
examples of light hazard. This also exists in prior editions. That said,
the annex material is not the only consideration. The definitions of each
hazard classification should be considered when determining protection
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
