The Detroit times. [volume] (Detroit, Mich.) 1903-1920, 1911-02-20
ARTICLE VII.
CIassiflc cation OF Buildings.

Section /. TYPES For the plr-
pose or this Ordinance. buildings
shall be divided into Types" in
accordance with their construction
as follows:
Type l.-Fireproof Construction.
Type 2.-Protected Construction.
Type 3.-Mill Construction.
Type 4.-ordinary Construction.
Type frame Construction.
Type Skeleton Construction.
Sec q TYPE /. FIREPROOF
CONSTRUCTION. This type OF con-
struction shall be applied 10 all
buildings in which all parts that
carry weights or resist strains. and
all stairs. and all stair and elevator
enclosures are TO be made entirely
of incombustible material, and I'm
which all metallic structural MEM
bers are TO be protected by ftre-
proof coverings,
Sec. 3: FIREPRooF MATER,
IALS The materials which shall
be considered as fulfilling the re-
qulrements OF freproof materials
for wallis. are:
Brick.
2.-Stone.
3.-Concrete.
Terra Gotta.
5-Hollow Burnt Clay Tile.
Clement Block or Tiles.
And for Non Bearing Parti-
tons
thD "A combination OF pure pSP-
sum and fibre not less than
inches thick.
tb) Cement plaster on metal
lath applied IL metal studding and
with a total thickness not less than
inches thick
tcD Cement plaster on a fabric
combining metal lath and metal
studding and with a total thick
ness not less than inches thick
Combustible material covered
Ia1 p
paint shall not be considered as
fireproof material.
Sec. l. FIREPROOF COVER
INGS FOR METAL The materials
and construction OF fireproof Gov
erinE for metallic members shall
be as follows:
Sec. g. BRICK. Brick not less
than four CD inches thick. outside
of the extreme metal Ranges 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
t21 inches thick outside or the eX-
treme metal fsnges.
All such blocks. IL made hollow,
shall have flanges and webs At
least hve-eighths 50 inches thick
inches apart.
All such blocks are TO be applied
10 the metal in a bed or cement
mortar and the hollow spaces be-
hind the blocks shall be niled solid
with fireproof material.
All such covering shall be firm
ly secured TO the metal.
Sec Z. CONCRETE. Concrete
applied directly To the metal OF
the constructive members. or on
metal lath. and at least one and
one-half Gh) inches thick OUT
side OF the extreme metal fanges
and with hollow spaces behind the
coverings, filed solid with fire.
proof material. All such cover
ing shall be firmly secured TO the
lower Ranges OF girders and beams
by wire or metal clips.
Sec 8. METAL IN EXTERNAL
WALLS Metallic Structural Mem
beers. located In External Walls snail
be protected on the outer SIDE by at
least eight 81 inches OF brick OF SIX
90 inches OF other F1rcproof Mate
rial or combination OF any two.
IN Skeleton Construction, the
plates and shelves carrying walls or
fireproofing may come within Two
% inches OF the face OF the wall.
The underside OF spandrii beams
.bsii be protected by covering
az least six (6) Inches or Fireproof
Material. ...,
Gee y CINDER CONCRETE.
The use Of Cinder Concrete In the
construction OF floors. ceilings and
roofs. and for Fireproofng Structur-
Al Members and also for filling back
OF Fireproof coverings OF metal. is
Sec. 10. COLUMNS BOUND. For
Columns entirely surrounded oy
FIreproof Blocks. these blocks shall
lie securely bound with wire OF not
less than number fourteen Clb
All Column Coverings must ex-
tend from the constructive floor arch
or slab. OF story TO the un-
derside OF the arch or slab OF the
story above.
There shall be no pipes. wires or
conduits incased within the Fire
proof coverings OF any Columns.
See IL PLASTER NOT IN
CLUDED The thickness or the
FIreproof Covering herein called
for, shall he exclusive OF any
plaster afterwards applied. Dath
and plaster alone shall not be con-
sidered Fireproof.
Sec. IL. GYPSUM. Gypsum
blocks and tiles shall have not moro
than six J6) per cent by weight OF
inch thick and the mortar used shall
he OF the same material or OF Port
Sec. rs. FLOOR CoNsTRLv'-
TtON. The floor OF Fireproof Con-
struction shall be made OF. I
(a) Brick arches not less than
eight 90 inches thick. having am
pie rise. well keyed and laid in ce-
mAnt mortar