Page 67 - 2018_IFC

DEFINITIONS

Type 3. A fire resistant, theft resistant and weather resis- [BF] MEMBRANE-PENETRATION FIRESTOP SYS-
tant “day box” or portable structure constructed in accor- TEM. An assemblage consisting of a fire-resistance-rated
dance with NFPA 495, NFPA 1124 or DOTy 27 CFR Part floor-ceiling, roof-ceiling or wall assembly, one or more pen-
55 used for the temporary storage of explosive materials. etrating items installed into or passing through the breach in
one side of the assembly and the materials or devices, or both,
Type 4. A permanent, portable or mobile structure such as
a building, igloo, box, semitrailer or other mobile con- installed to resist the spread of fire into the assembly for a
tainer that is fire resistant, theft resistant and weather resis- prescribed period of time.
tant and constructed in accordance with NFPA 495, NFPA [BE] MERCHANDISE PAD. A merchandise pad is an area
1124 or DOTy 27 CFR Part 55. for display of merchandise surrounded by aisles, permanent
fixtures or walls. Merchandise pads contain elements such as
Type 5. A permanent, portable or mobile structure such as
a building, igloo, box, bin, tank, semitrailer, bulk trailer, nonfixed and moveable fixtures, cases, racks, counters and
tank trailer, bulk truck, tank truck or other mobile con- partitions as indicated in Section 105.2 of the International
tainer that is theft resistant, which is constructed in accor- Building Code from which customers browse or shop.
dance with NFPA 495, NFPA 1124 or DOTy 27 CFR Part METAL HYDRIDE. A generic name for compounds com-
55. posed of metallic element(s) and hydrogen.
MAGNESIUM. The pure metal and alloys, of which the METAL HYDRIDE STORAGE SYSTEM. A closed sys-
major part is magnesium. tem consisting of a group of components assembled as a
MALL. See “Covered mall building.” package to contain metal-hydrogen compounds for which
there exists an equilibrium condition where the hydrogen-
MANUAL FIRE ALARM BOX. A manually operated absorbing metal alloy(s), hydrogen gas and the metal-hydro-
device used to initiate an alarm signal.
gen compound(s) coexist and where only hydrogen gas is
MANUAL STOCKING METHODS. Stocking methods released from the system in normal use.
utilizing ladders or other nonmechanical equipment to move [BG] MEZZANINE. An intermediate level or levels
stock.
between the floor and ceiling of any story and in accordance
MARINA. Any portion of the ocean or inland water, either with Section 505 of the International Building Code.
naturally or artificially protected, for the mooring, servicing MISCELLA. A mixture, in any proportion, of the extracted
or safety of vessels and shall include artificially protected oil or fat and the extracting solvent.
works, the public or private lands ashore, and structures or
facilities provided within the enclosed body of water and MOBILE FOOD PREPARATION VEHICLES. Vehicles
ashore for the mooring or servicing of vessels or the servicing that contain cooking equipment that produce smoke or
of their crews or passengers. grease-laden vapors for the purpose of preparing and serving
food to the public. Vehicles intended for private recreation
MARINE MOTOR FUEL-DISPENSING FACILITY. shall not be considered mobile food preparation vehicles.
That portion of property where flammable or combustible liq-
uids or gases used as fuel for watercraft are stored and dis- MOBILE FUELING. The operation of dispensing liquid
pensed from fixed equipment on shore, piers, wharves, floats fuels from tank vehicles into the fuel tanks of motor vehicles.
or barges into the fuel tanks of watercraft and shall include all Mobile fueling may also be known by the terms “Mobile fleet
other facilities used in connection therewith. fueling,” “Wet fueling” and “Wet hosing.”
MAXIMUM ALLOWABLE QUANTITY PER CON- MORTAR. A tube from which fireworks shells are fired into
TROL AREA. The maximum amount of a hazardous mate- the air.
rial allowed to be stored or used within a control area inside a MULTIPLE-STATION ALARM DEVICE. Two or more
building or an outdoor control area. The maximum allowable single-station alarm devices that can be interconnected such
quantity per control area is based on the material state (solid, that actuation of one causes all integral or separate audible
liquid or gas) and the material storage or use conditions. alarms to operate. A multiple-station alarm device can consist
[BE] MEANS OF EGRESS. A continuous and unobstructed of one single-station alarm device having connections to
path of vertical and horizontal egress travel from any occu- other detectors or to a manual fire alarm box.
pied portion of a building or structure to a public way. A MULTIPLE-STATION SMOKE ALARM. Two or more
means of egress consists of three separate and distinct parts: single-station alarm devices that are capable of interconnec-
the exit access, the exit and the exit discharge. tion such that actuation of one causes the appropriate alarm
MECHANICAL STOCKING METHODS. Stocking meth- signal to operate in all interconnected alarms.
ods utilizing motorized vehicles or hydraulic jacks to move NESTING. A method of securing flat-bottomed compressed
stock. gas cylinders upright in a tight mass using a contiguous three-
[BG] MEDICAL CARE. Care involving medical or surgical point contact system whereby all cylinders within a group
procedures, nursing or for psychiatric purposes. have not less than three points of contact with other cylinders,
walls or bracing.
MEMBRANE STRUCTURE. An air-inflated, air-sup-
ported, cable or frame-covered structure as defined by the NET EXPLOSIVE WEIGHT (net weight). The weight of
International Building Code and not otherwise defined as a explosive material expressed in pounds. The net explosive
tent. See Chapter 31 of the International Building Code. weight is the aggregate amount of explosive material con-

34 2018 INTERNATIONAL FIRE CODE ®
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