Section 27-243
§ 27-243 Classification. Buildings and spaces shall be classified in
the high hazard occupancy group when they are used for storing,
manufacturing, or processing potentially-explosive products or
materials, or highly-combustible or highly-flammable products or
materials that are likely to burn with extreme rapidity. The high hazard
group shall also include: uses that involve storing, processing, or
handling any materials that produce explosive dust, or that result in
the division of matter into fine particles subject to spontaneous
ignition; uses that employ solids or substances that ignite or produce
flammable gases on contact with water; and any other uses that
constitute a high fire hazard because of the form, character, or volume
of the materials involved.
(a) Typical material contents. Acetylene gas and gases under pressure
of fifteen psig or more and in quantities greater than twenty-five
hundred cubic feet, including hydrogen, illuminating gas, natural gas,
and all other gases subject to explosion; gas piping at pressure levels
above fifteen psig regardless of the quantities of gas; celluloid and
celluloid products; cotton batting; kerosene; fuel or other oils having
a flash point under 200°F (tag closed cup), except five hundred fifty
gallons or less in one- and two-family dwellings; refrigerating systems
using high hazard refrigerants as defined in subchapter thirteen of this
chapter, and except that in buildings lawfully occupied as garages prior
to December sixth, nineteen hundred sixty-eight the storage of tank
trucks or other vehicles, approved by the fire commissioner for the
transportation of products having a flash point of over 100°F (tag open
cup), and where the product contained in the cargo space of the vehicles
is pending delivery, shall only be considered to constitute a high
hazard occupancy when the product is stored in quantities greater than
forty-five thousand gallons.
(b) Typical occupant activities. Artifical flower and synthetic
leather manufacture; ammunition, explosives, and fireworks manufacture,
sales or storage; dry cleaning or dyeing; using or storing gasoline or
other combustible solvents as outlined in article six of subchapter
seven of this chapter; feather renovating; fruit ripening processes;
hydrogenation processes; match manufacture or storage; metal enamelling
or japanning; paint and varnish manufacture; paint spraying or dipping,
as specified in article three of subchapter seven of this chapter;
derivation of petroleum products by application of heat; processing of
paper or cardboard in loose form; pyroxylin products manufacture and
storage; rag sorting and storage; shoe polish manufacture; straw goods
manufacture or broom corn storage; tar, pitch, or resin processing;
waste paper sorting, shredding, storage, or baling; cotton waste
processes.
Section 27-244
§ 27-244 Location restrictions. No space classified in the high hazard
occupancy group shall be located above the second story of any building
or building section classified in construction group II containing a
space classified in occupancy group J-1 or J-2.