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definitions index
ANNULAR SPACE.
The opening around the penetrating item.
CEILING RADIATION
DAMPER. A listed
device installed in a ceiling membrane of a fire-resistance-rated
floor/ceiling or roof/ceiling assembly to limit automatically
the radiative heat transfer through an air inlet/outlet opening.
COMBINATION
FIRE/SMOKE DAMPER.
A listed device installed in ducts and air transfer openings
designed to close automatically upon the detection of heat
and resist the passage of flame and smoke. The device is installed
to operate automatically, controlled by a smoke detection
system, and where required, is capable of being positioned
from a fire command center.
DAMPER.
See “Ceiling radiation damper,” “Combination
fire/smoke damper,” “Fire damper” and “Smoke
damper.”
DRAFTSTOP.
A material, device or construction installed to restrict the
movement of air within open spaces of concealed areas of building
components such as crawl spaces, floor/ceiling assemblies,
roof/ceiling assemblies and attics.
F RATING.
The time period that the through-penetration firestop system
limits the spread of fire through the penetration when tested
in accordance with ASTM E 814.
FIRE AREA.
The aggregate floor area enclosed and bounded by fire walls,
fire barriers, exterior walls or fire-resistance-rated horizontal
assemblies of a building.
FIRE BARRIER.
A fire-resistance-rated wall assembly of materials designed
to restrict the spread of fire in which continuity is maintained.
FIRE DAMPER.
A listed device installed in ducts and air transfer openings
designed to close automatically upon detection of heat and
resist the passage of flame. Fire dampers are classified for
use in either static systems that will automatically shut
down in the event of a fire, or in dynamic systems that continue
to operate during a fire. A dynamic fire damper is tested
and rated for closure under elevated temperature airflow.
FIRE DOOR.
The door component of a fire door assembly.
FIRE DOOR ASSEMBLY.
Any combination of
a fire door, frame, hardware, and other accessories that together
provide a specific degree of fire protection to the opening.
FIRE PARTITION.
A vertical assembly of materials designed to restrict the
spread of fire in which openings are protected.
FIRE PROTECTION
RATING. The period
of time that an opening protective assembly will maintain
the ability to confine a fire as determined by tests prescribed
in Section 715. Ratings are stated in hours or minutes.
FIRE RESISTANCE.
That property of materials or their assemblies that prevents
or retards the passage of excessive heat, hot gases or flames
under conditions of use.
FIRE-RESISTANCE
RATING. The period
of time a building element, component or assembly maintains
the ability to confine a fire, continues to perform a given
structural function, or both, as determined by the tests,
or the methods based on tests, prescribed in Section 703.
FIRE-RESISTANT
JOINT SYSTEM. An
assemblage of specific materials or products that are designed,
tested, and fire-resistance rated in accordance with eitherASTME1966
or UL 2079 to resist for a prescribed period of time the passage
of fire through joints made in or between fire-resistance-rated
assemblies.
FIRE SEPARATION
DISTANCE. The distance
measured from the building face to one of the following:
1. The closest
interior lot line;
2. To the centerline
of a street, an alley or public way; or
3. To an imaginary
line between two buildings on the property.
FIRE WALL.
A fire-resistance-rated
wall having protected openings, which restricts the spread
of fire and extends continuously from the foundation to or
through the roof, with sufficient structural stability under
fire conditions to allow collapse of construction on either
side without collapse of the wall.
FIRE WINDOW
ASSEMBLY. A window
constructed and glazed to give protection against the passage
of fire.
FIREBLOCKING.
Building materials installed to resist the free passage of
flame to other areas of the building through concealed spaces.
FLOOR FIRE
DOOR ASSEMBLY. A
combination of a fire door, a frame, hardware and other accessories
installed in a horizontal plane, which together provide a
specific degree of fire protection to a through-opening in
a fire-resistance-rated floor (see Section 711.8).
HORIZONTAL
ASSEMBLY. A fire-resistance-rated
floor or roof assembly of materials designed to restrict the
spread of fire in which continuity is maintained.
JOINT. The linear opening in or between
adjacent fire-resistance-rated assemblies that is designed
to allow independent movement of
the building in any plane caused by thermal, seismic,
wind or any other loading.
MEMBRANE PENETRATION. An opening made
through one side (wall, floor or
ceiling membrane) of an assembly.
MEMBRANE-PENETRATION FIRESTOP. A
material, device or construction
installed to resist for a prescribed time
period the passage of flame and heat through openings
in a protective membrane in order
to accommodate cables, cable trays,
conduit, tubing, pipes or similar items.
MINERAL FIBER.
Insulation composed principally of fibers
manufactured from rock, slag or glass, with or
without binders.
MINERAL WOOL.
Synthetic vitreous fiber insulation made
by melting predominately igneous rock or furnace
slag, and other inorganic
materials, and then physically forming the melt
into fibers.
Party walls. Any wall located on a lot line
between adjacent buildings, which
is used or adapted for joint service
between the two buildings, shall be constructed as a
fire wall in accordance with
Section 705. Party walls shall be constructed
without openings and shall create separate buildings.
PENETRATION FIRESTOP. A
through-penetration firestop or a
membrane-penetration firestop.
SELF-CLOSING. As applied to a fire door
or other opening, means equipped
with an approved device that will ensure closing
after having been opened.
SHAFT. An enclosed space extending
through one or more stories of a
building, connecting vertical openings in successive
floors, or floors and roof.
SHAFT ENCLOSURE. The walls or
construction forming the
boundaries of a shaft.
SMOKE BARRIER. A continuous membrane,
either vertical or horizontal,
such as a wall, floor, or ceiling assembly, that is
designed and constructed to restrict the movement of
smoke.
SMOKE COMPARTMENT. A space within a
building enclosed by smoke
barriers on all sides, including the top and
bottom.
SMOKE DAMPER. A listed device installed
in ducts and air transfer openings
designed to resist the passage of smoke. The
device is installed to operate automatically,
controlled by a smoke detection
system, and where required, is capable of
being positioned from a fire command center.
SPLICE. The result of a factory and/or
field method of joining or
connecting two or more lengths of a fire-resistant joint
system into a continuous entity.
T RATING. The time period that the
penetration firestop system,
including the penetrating item, limits the maximum
temperature rise to 325°F (163°C)
above its initial temperature
through the penetration on the nonfire side when tested in
accordance with ASTM E 814.
THROUGH PENETRATION. An opening that
passes through an entire assembly.
THROUGH-PENETRATION FIRESTOP SYSTEM. An
assemblage of specific materials or products that are
designed, tested and
fire-resistance rated to resist for a prescribed period
of time the spread of fire through penetrations. The
F and T rating criteria for
penetration firestop systems shall be in accordance
with ASTM E 814. See definitions of “F rating” and “T
rating.”
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