The Lubbock avalanche. (Lubbock, Tex.) 1909-1922, 1922-05-16

existing buildlnK, the floor openings
through which u passes shall be
equipped with automatically closing
trap doors not less than | l-2 inches
thick. made OF two thicknesses of
matched boards, covered on the UNI
derside with tin. The trap doors
when closed shall extend beyond the
opening on all sides. Such trap doors
shall be protected by a substantial
guard or gate, which shall be kept
closed at all times except when In
actual use.
Section IL. Skylights over Stair
way and Elevator Shafts: Where a
stairway, elevator. or dumb waiter
shaft extends through the roof and
is covered by a skylight, the sky
light shall be constructed with in
combustible frame and sash. glazed
with ordinary thin glass. and shall
be protected by a galvanized steel
wire screen with a mesh not exceed
ing one inch, and the wire not smaller
than No. ~ gauge. The screen
shall have metal supports and shall
be placed not less than inches
above the skylight. Instead Of sky
light, window may be placed in the
side Of the shaft above the roof
which is furtherest removed from a
property line. The window shall
have incombustible frame and sash.
and be glazed with thin glass.
Section Is. Floor lights; Except
in dwellings, all openings hereafter
made in floors for the transmission
of light to floors below shall be COW
cred with glass set in metal frames
and bars The glass shall be not less
than ga inch in thickness. and II
any glass measures more than Is
square inches there shall be a rigid
wire mesh either in the glass or un-
der IL.
Section IS. Light, Vent, and
Dumb Waiter Shafts. In every
building hereafter erected or alter
ed except frame buildings, al walls
or partitions forming interior light
or vent shafts shall be built in ac-
stair and elevator shafts in new
buildings as specified in Section ID.
The walls Of dumb waiter shafts. ex-
cept those in dwellings which extend
only one story above the basement or
cellar shall be Of fire-resistiye con-
struction, and shall not be less than
3 inches thick IL constructed Of
brick. hollow or solid partition
blocks. or Of steel studding and met
al lath with "a inch of Portland
cement plaster on each side; or 2
inch solid metal lath and Portland
cement plaster wall may be permit
ted. IL securely anchored at each
floor, the material and method Of
construction to be as specified for
stair and elevator shafts in existing
buildings in Section ~.
In frame buildings outside the
fire limits the enclosure partition Of
all such shafts may be constructed
as provided in Section 10, FOR stair
and elevator shafts in existing build
ings.
Where a dumb waiter shaft does
not extend through the roof the top
OF the shaft shall be Of fire-resistive
construction Of the same thickness
as the walls Of the shaft
All openings 10 dumb waiter shafts
shall be protected by fire doors
mounted in incombustible frames SCI
curcly anchored % the walls.
The walls Of al light and vent
shafts hereafter erected shall extend
not less than feet above the roof
level. except that when a shaft IL COW
cred by an iucombustible ventiliating
skylight. the walls need not extend
more than feet above the roof.
Masonry walls shall be properly
COPIED.
SECTION H. Roof Openings All
openings in roofs for the admission
Of light or air, other than those pro
vided for in Sections IL and l6, shall
have incombustible frames and sash
glazed with wire glass; or ordinary
glass may be used, II protected above
and below by galvanized steel wire
screen with mesh not exceeding one
inch, and the wire not smaller than
No. ~ gauge. The top screen shall
be installed as specified in Section
IA.
Section Is. Exits Required The
term floor area as used in this sec
ton shall mean the entire floor space
between exterior walls and fire walls.
In every building hereafter erected,
except IN private dwellings, each
floor area above the first shall be
provided with at least two means Of
egress remote from each other
All exit doors in schools, hospitals,
theaters and other places Of public
asscmblage shall open outwards.
The means of egress 70 all build
ings three or more stories IN height
and so occupied A. 10 bring them
within the purview Of the State Fire
Escape Law, shall conform 20 said
State law and the specifications pro
mulgated Hereunder, and the Build
ing Inspector shall not grant per-
nit. as provided in Section 3, Of this
ordinance, for the erection Of any
building unless the plans and specifi-
cations for egress in such building
shall conform to the requirements
of the State Fire Escape Law.
Section 10. Motion Picture Thea
tiers: The Building Inspector shall
not grant a permit for the erection
or alteration of any building TO be
used as a motion picture theater, or
in which motion pictures are 70 be
exhibited within the corporate linn