Los Angeles herald., 1906-06-08
PueLIo ADVERTISING

service for tho building shall he en-
closed In fireproof walls or partitions,
navins 2 tight door aud containing no
glass other than wired glass not less
than one-fourth Of an inch thick.
CLASS "B" BGiLDfNGs DEFINITION
soo AND AT ,IL.IMIT. LIMIT OF HEIGHT -
not exceed ono hundred feet nor be
more than eight stories I'm height the
exterior walls and piers of which shall
sonry and steel, and all internal loads
| except those bearing on exterior
wallsl shall he carried to the founda-
tons by columns and girders of iron or
All wooden jolsts, Turing or studding
or so6its OF stairs shall be metal lathed
ana plestered. No studding shall be
STRUCTURAL METAL
See 80. Every beam carrying ma
sonry and all columns In class sB"
Class cIne sna'i De hreprooted as IN
All exposed parts OF other structural
metal shall be covered with metal latin
on metal Turing, allowing one-half
inch air space and plastered
| CONSTRUCTION OF FLOORS
Sec. so. IN buildings OF Glass "B"
all floors, ceiling aud roof toists may be
of wood. Every floor shall be com
posed OF two layers of flooring. each
| not less than seven eighths of an inch
thick. with, one inch OF non -combustible
/
the. flooring and extending over the
entire area solid UP to all materials
which pass through tho floors and be-
tween furring strips. Under such layer
Iof non -combustible material there must
| be placed sheet of waterproof paper;
| or the floor may be constructed with a
layer OF two,inch tongued and grooved
| planktng and layer of one-inch floor
| ing, with a layer of waterproof paper
| between, or two thicknesses of seven
eighths inch flooring with two thick
e. la.aNa 1.
fooring. All waterproof paper must be
turned up at least two inches where 1t
comes in contact with the walls or any
material passing through the floor
BRIDGING
Sec. 81. In buildings of Glass "B"
all wood 1olsts shall have at least one
row. of 2xS inch cross bridging to each
twelve feet of span or fraction thereof
All spaces between ioists shall be
bloc ked at each bearing partition with
blocks not less than two inches thick
and OF the full height of tho joists.
Each stud partition shall have two
inch bridging the full width of studs a
floor and ceiling and once between floor
and ceiling.
sTAIRWAYS
See. 80. Buildings of Glass "B" shall
have one main stairway, not less than
four feet wide. from first to highest
than two stairways from the top floor
to the second floor in any building
sa,,ars naNps fnet m9re than six thogsand sanni
and every building shall have at least
one stairway removed not less than ten
feet from any elevator shaft or open
we'll hole, and one stairway to the roof.
Stairways from the first story to any
basement or portion thereof occupied
only for storage or for the maintain
ance of service for the building, shall
be closed al some point with tight
partition and door Containing no glass
other than wired glass not less than
one-fourth OF an inch thick.
ELEVATORS, DUMB WATERS AND
Sec. 33. All passenger elevators in
buildings of Glass "B" shall be enclosed
in a shaft having a covered top: said
floor to at least eighteen feet above the
highest floor reached by car, or not less
than three feet above the roof
Such shaft shall be of brick, tile, con-
crete or of wood studs having fire stops
the width of studs and not less than
two inches thick at each floor and once
between floors; such studs shall be
al-lathed on both sides and plas-
shaft may be enclosed with wired glass
not less than one-fourth inch thick in
metal frames and sash.
All doors to such shafts shall be con-
structed of metal or metal-covered
wood, and any glass in doors or shaft
walls shall be wired glass not less than
metal-covered sash and frame.
The room containing the elevator ma
chinery shall be of same construction
as required for shaft.
Every dumb waiter, chute or other
shaft, cutting through from floor to
floor, shall be of the same class of
construction as required for passenger
elevator shafts, or may be of metal or
metaI-lined where too small to plaster,
and all openings to such shafts or
chutes shall be provided with doors or
covers
If freight elevator is placed in a
shaft the shaft shall be constructed as
provided for shafts for passenger eleva-
tors. In case a freight elevator is not
each floor, which doors shall be auto
matte, or shall be held open by fusible
links and so arranged as to fall shut
when link is fused, and shall be COW
and edges.
Every passenger elevator, car or
hoist shall be provided with the proper
automatic apparatus to prevent its fall
below sheave beams of elevator there
shall be placed strong metal netting
OF not less than three -sixteenths inch
round iron and having mesh not eX-
ceeding two inches. supported on steel
angles, and upon such metal netting
there shall be lighter wire netting not
Every elevator and it's carrying beams
and cables shall have a capacity of not
less than one hundred pounds to the
square foot with a factor of safety of
vided with automatic devices which
shall stop the car at the top and bottom
floors and with automatic safety devices
which will bring the car to stop in
case of excessive speed. or in case of
failure of any part of the apparatus.
LIGHT COURTS
Sec. "a. In any building of Class
'B" the walls of every interior light
court whose ground area exceeds forty
square feet shall be constructed of ma
sonry, or of walls carried on steel
beams supported by columns at the
various floors; and in every case the
walls shall be of tile. brick or rein
forced concrete not less than four
inches thick. Areas not to exceed one
hundred forty-four square feet unstif-
fened, and in case of brick or tile there
shall be reinforcement OF expanded
metal the full thickness of the wall at
least every two feet in height and the
brick or tile shall be laid in cement
mortan
Interior light courts of less than
forty square feet area shall be lined
with tight boarding having vertical
stripping, metal-lathed and plastered
with three-fourths inch or hard plas-
ter.
Exterior light courts breaking not
more than eight feet into the building
shall be of the construction provided for