The Detroit times., 1911-02-21


Fire Doors.
Sec. Ia. BUILDINGS FOR MAN
UFACTuRING PURPOSES Frame
buildings outside OF the IRE limits
and designed for manufacturing.
storage. exhibition. mechanical or
stable purposes. shall be divided by
regular masonry fire walls. so that
no room shall contain more than
$4,000 square feet OF floor area, TX
the building be but one story In
height nor more than $4,000 square
feet IL more than one story In
height.
ARTICLE VII.
Classification OF Buildings.
Section 1. TYPES. For the pur-
pose OF this Ordinance. buildings
shall be divided into Types In
accordance with their construction
Type 1.--Fireproof Construction.
Type Protected Construction.
Type 3.-Mill Construction.
Type ORDINARY Construction.
+. Type 6.-Frame Construction.
Sep spe ;. TYPE 7. oo PIREPRoor
CONSTRUCTION. This type OF con-
struction shall be applied to all
buildings In which all parts that
carry weights or resist strains. and
all stairs. and all stair and elevator
OF incombustible material. and In
which all metallic structural mem
bers are to be protected by firc-
proof coverings.
Sec. 8. FIREPRooF MATER
IALS. The materials which shall
quirements OF freproof materials
for walls. are:
1.-Brfck.
2.-Stone.
3.-Concrete.
i.--Terra Gotta
5.-Hollow Burnt Clay Tile.
6.-Cement Block or Tiles.
land for Non-Bearing Parti-
tons
fa) A combination OF pure Gyp-
sum and nbre not less than
Cb) Cement plaster on metal
lath applied to metal studding. and
with a total thickness not less than
inches thick.
tc) Cement plaster on a fabric
combining metal lath and metal
studding and with a total thick
ness not less than 2 inches thick.
Combustible material covered
with any so-called "freproof
paint shall not be considered as
Sec. 4. FIREPRoOF COVER
INGS FOR METAL The materials
and construction Of fireproof COW
ering for metallic members shall
be as follows:
Sec. s. BRICK. Brick not less
than four (D inches thick. outside
OF the extreme metal nanges and
all hollow spaces behind the brick
filled solid with fireproof material.
Such brick covering shall be
thoroughly bonded.
Sec. g. BLOCKS Hollow tile and
burnt clay. porous terra Gotta or
concrete blocks. not less than two
cd inches thick outside or the ex-
treme metal nanges.
All such blocks. IL made hollow.
shall have Ranges and webs at
least hve-eighths (%D inches thick
and webs not more than six le)
inches apart.
to the metal In a bed OF cement
mortar and the hollow spaces be.
hind the blocks shall be filled solid
with freproof material
All such covering shall be hrm-
ly secured 10 the metal.
Sec. 4. CONCRETE. Concrete
applied directly to the metal OF
the constructive members. or on
metal lath. and at least one ana
one-haif (1h) inches thick OUT
side OF the extreme metal hanges
and with hollow spaces De ,ah a me
proof material. All such cover
tnS shaii be firmly secured to the
lower fianges of girders and beams
by wire or metal clips.
Sec. 8. METAL IN ExTEE Ma,
hers located in External Walls shall
he protected on the outer side by at
least eight (s) inches OF brick or six
Sse inebes OF other Fireproof Mate
rial. or combination OF any two.
In Skeleton CONSTRUCTION, the
arenroofine may come within two
1aC inches of the face Of the wall.
THE uuderside OF spandrii beams
shaiI be protected by q covering
AZ least six (s) inches Of Fireproof
Meyers see cINpER CONCRETE.
The use of Cinder Concrete In the
construction or floors, ceilings ana
roofs. and for Fireproofing Structur-
AL Members and also for filling back
of Fireproof coverings OF metal Is
prs sec 10. COLUMNS BOUND; For
Columns entirely surrounded py
Fireproof Blocks. these blocks shall
be securely bound with wire or not
less than number fourteeh ND
An Column Coverings must ex-
tend from the constructive floor arch
or slab, OF a story to the un-
derside OF the arch or slab or the
story above.
There shall be no pipes. wires or
conduits incased within the Fire
proof Coverings OF any Columns.
Sec. IL. PLASTER NOT IN
CI,tJDED. The thickness of the
Fireproof Covering herein called
for. shall be exclusive of any
master afterwards applied. Lath
and plaster alone shall not be con-
sidered Fireproof
Sec. 12. GYPSUM. Gypsum
blocks and tiles shall have not more
than six 90 per cent by weight or
fbre and webs not less than one W
inch thick and the mortar used shall
he OF the same material or OF Port
land Cement. -
Sec rs. FLOOR CoNsTRUc-
TON. The floor OF r1reproot CON
strlictiou shall be made OF,
Car Brick arches not less than
eight (s) inches thick. having am
pie rise. well keyed and laid In ce-
ment mortar.