chapp

TOWNHOUSE.

A single-family dwelling

unit constructed in a group of three or more

attached units in which each unit extends from

the foundation to roof and with open space on

at least two sides.

HIGH-RISE BUILDING.

A building with

an occupied floor located more than 75 feet (22

860 mm) above the lowest level of fire department

vehicle access.

INCOMPATIBLE MATERIALS.

Materials

that, when mixed, have the potential to react in a

manner that generates heat, fumes, gases or byprod

ucts which are hazardous to life or property.

[F] CORROSIVE.

A chemical that causes visible de

struction of, or irreversible alterations in, living tissue

by chemical action at the point of contact. A chemi

cal shall be considered corrosive if, when tested on

the intact skin of albino rabbits by the method de

scribed in DOTn 49 CFR, Part 173.137, such chem

ical destroys or changes irreversibly the structure of

the tissue at the point of contact following an expo

sure period of 4 hours. This term does not refer to

action on inanimate surfaces.

[F] COMBUSTIBLE DUST.

Finely divided solid

material that is 420 microns or less in diameter and

which, when dispersed in air in the proper propor

tions, could be ignited by a flame, spark or other

source of ignition. Combustible dust will pass

through a US No. 40 standard sieve.

[F] HAZARDOUS MATERIALS.

Those chemi

cals or substances that are physical hazards or health

hazards as classified in Section 307 and the Interna

tional Fire Code, whether the materials are in usable

or waste condition.

[F] FLAMMABLE MATERIAL.

A material capa

ble of being readily ignited from common sources of

heat or at a temperature of 600°F (316°C) or less

Low explosive.

Explosive material that will

burn or deflagrate when ignited. It is character

ized by a rate of reaction that is less than the

speed of sound. Examples of low explosives in

clude, but are not limited to: black powder;

safety fuse; igniters; igniter cord; fuse lighters;

fireworks; and propellants, 1.3C.

Mass-detonating explosives.

EXPLOSIVE.

A chemical compound, mixture

or device, the primary or common purpose of which

is to function by explosion. The term includes, but

is not limited to: dynamite, black powder, pellet

powder, initiating explosives, detonators, safety

fuses, squibs, detonating cord, igniter cord, and ig

niters.

Open mall.

An unroofed common pedestrian

way serving a number of tenants not exceeding

three levels. Circulation at levels above grade

shall be permitted to include open exterior bal

conies leading to exits discharging at grade.

Open mall building. Several structures housing

a number of tenants, such as retail stores, drink

ing and dining establishments, entertainment

and amusement facilities, offices, and other sim

ilar uses, wherein two or more tenants have a

main entrance into one or more open malls. An

chor buildings are not considered as a part of the

open mall building.

COVERED MALL BUILDING.

A single

building enclosing a number of tenants and occupants,

such as retail stores, drinking and dining establish

ments, entertainment and amusement facilities, pas

senger transportation terminals, offices and other simi

lar uses wherein two or more tenants have a main en

trance into one or more malls. Anchor buildings shall

not be considered as a part of the covered mall build

ing. The term “covered mall building” shall include

open mall buildings as defined below.

Mall. A roofed or covered common pedestrian

area within a covered mall building that serves as

access for two or more tenants and not to ex

ceed three levels that are open to each other.

retentivity

ability of material to remain magnetic after removing after the magnetizing force is removed

paramagnetic

can be magnetized but will exhibit little magnetic effect