Page 81 - 2018_IFC

DEFINITIONS

1
Class III system. A system providing 1 / -inch (38 mm) tours, fire suppression systems or equipment, or maintenance
2
hose stations to supply water for use by building occu- features of related systems.
1
pants and 2 / -inch (64 mm) hose connections to supply a SYSTEM. An assembly of equipment consisting of a tank,
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larger volume of water for use by fire departments and container or containers, appurtenances, pumps, compressors
those trained in handling heavy fire streams. and connecting piping.
STATIC PILES. Piles in which processed wood product or TANK. A vessel containing more than 60 gallons (227 L).
solid biomass feedstock is mounded and is not being turned
or moved. TANK, ATMOSPHERIC. A storage tank designed to oper-
ate at pressures from atmospheric through 1.0 pound per
STATIONARY BATTERY ARRAY. An arrangement of square inch gauge (760 mm Hg through 812 mm Hg) mea-
individual stationary storage batteries in close proximity to sured at the top of the tank.
each other, mounted on storage racks or in modules, battery
cabinets or other enclosures. TANK, PORTABLE. A packaging of more than 60-gallon
(227 L) capacity and designed primarily to be loaded into or
STEEL. Hot- or cold-rolled as defined by the International on or temporarily attached to a transport vehicle or ship and
Building Code.
equipped with skids, mountings or accessories to facilitate
STORAGE, HAZARDOUS MATERIALS. The keeping, handling of the tank by mechanical means. It does not include
retention or leaving of hazardous materials in closed contain- any cylinder having less than a 1,000-pound (454 kg) water
ers, tanks, cylinders, or similar vessels; or vessels supplying capacity, cargo tank, tank car tank or trailers carrying cylin-
operations through closed connections to the vessel. ders of more than 1,000-pound (454 kg) water capacity.
[BG] STORY. That portion of a building included between TANK, PRIMARY. A listed atmospheric tank used to store
the upper surface of a floor and the upper surface of the floor liquid. See “Primary containment.”
or roof next above (see “Basement,” “Building height,” TANK, PROTECTED ABOVE GROUND. A tank listed in
“Grade plane” and “Mezzanine”). A story is measured as the accordance with UL 2085 consisting of a primary tank pro-
vertical distance from top to top of two successive tiers of vided with protection from physical damage and fire-resistive
beams or finished floor surfaces and, for the topmost story, protection from a high-intensity liquid pool fire exposure.
from the top of the floor finish to the top of the ceiling joists The tank may provide protection elements as a unit or may be
or, where there is not a ceiling, to the top of the roof rafters.
an assembly of components, or a combination thereof.
[BG] STORY ABOVE GRADE PLANE. Any story having TANK, STATIONARY. Packaging designed primarily for
its finished floor surface entirely above grade plane, or in stationary installations not intended for loading, unloading or
which the finished surface of the floor next above is:
attachment to a transport vehicle as part of its normal opera-
1. More than 6 feet (1829 mm) above grade plane; or tion in the process of use. It does not include cylinders having
less than a 1,000-pound (454 kg) water capacity.
2. More than 12 feet (3658 mm) above the finished
ground level at any point. TANK VEHICLE. A vehicle other than a railroad tank car
SUBORDINATE (FIRE PROTECTION AND LIFE or boat, with a cargo tank mounted thereon or built as an inte-
SAFETY SYSTEM). A system that is activated by another gral part thereof, used for the transportation of flammable or
fire protection or life safety system. For example, where a fire combustible liquids, LP-gas or hazardous chemicals. Tank
alarm system activates a smoke removal or elevator recall vehicles include self-propelled vehicles and full trailers and
system, the smoke removal or elevator recall system is con- semitrailers, with or without motive power, and carrying part
sidered to be “subordinate” to the fire alarm system. or all of the load.
SUPERVISING STATION. A facility that receives signals TEMPORARY SPECIAL EVENT STRUCTURE. Any
and at which personnel are in attendance at all times to temporary ground-supported structure, platform, stage, stage
respond to these signals. scaffolding or rigging, canopy, tower supporting audio or
visual effects equipment or similar structures not regulated
SUPERVISORY SERVICE. The service required to moni- within the scope of the International Building Code.
tor performance of guard tours and the operative condition of
fixed suppression systems or other systems for the protection TENT. A structure, enclosure, umbrella structure or shelter,
of life and property. with or without sidewalls or drops, constructed of fabric or
pliable material supported in any manner except by air or the
SUPERVISORY SIGNAL. A signal indicating the need of contents it protects (see “Umbrella structure”).
action in connection with the supervision of guard tours, the
fire suppression systems or equipment, or the maintenance THEFT RESISTANT. Construction designed to deter ille-
features of related systems. gal entry into facilities for the storage of explosive materials.
SUPERVISORY SIGNAL-INITIATING DEVICE. An [BF] THROUGH-PENETRATION FIRESTOP SYS-
initiating device such as a valve supervisory switch, water TEM. An assemblage consisting of a fire-resistance-rated
level indicator, or low-air pressure switch on a dry-pipe sprin- floor, floor-ceiling or wall assembly, one or more penetrating
kler system whose change of state signals an off-normal con- items passing through the breaches in both sides of the
dition and its restoration to normal of a fire protection or life assembly and the materials or devices, or both, installed to
safety system; or a need for action in connection with guard resist the spread of fire through the assembly for a prescribed
period of time.

48 2018 INTERNATIONAL FIRE CODE ®
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