The Detroit times., 1911-02-23
ARTICLE VII.
CIassifIc nfion Of Buildings.

Section 1. TYPES. For the pur-
pose OF this Ordinance, buildings
shall be divided into Types" in
accordance with their construction
as follows:
Type I.-Fireproof Construction.
Type 2.-Protected Construction.
Type 3.-Mill Construction.
Type 4.-Ordinary Construction.
Type 5.-Frame Construction.
Type 6.--Skeleton Construction
CONSTRUCTION. This type OF corr
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
enclosures are to be made entirely
OF incombustible material. and In
which all metallic structural mem
bers are to be protected by fire.
Sec. 3. FiREPRooF MATER
IALS The materials which shall
be considered az fulnlling the re-
quirements OF hreproof materials
for walls. are:
Brick.
2.-Stone.
3.-Concrete.
Terra Gotta.
6.-Hollow Burnt Clay Tile.
6.-Cement Block or Tiles.
And for Non Bearing Parti-
la) A combination Of pure Gyp-
sum and fibre not less than
inches thick.
(b) Cement plaster on metal
lath applied TO metal studding. and
with total thickness not less than
inches thick
(c) Cement plaster on a fabric
combining metal lath and metal
studding and with a total thick
ness not less than 2 inches thick
Cnn.huatthfa farfal royerah
with any so-called ''freproof'
paint shall not be considered as
freproof material.
Sec. 1. 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 90 inches thick, outside
OF the extreme metal fanges and
all hollow spaces behind the brick
filled solid with freproof material
Such brick covering shall be
thoroughly bonded.
Sec. s. BLOCKS Hollow tile and
burnt clay. porous terra Gotta or
concrete blocks. not less than two
t2) inches thick outside OF the ex-
treme metal fianges:
All such blocks, IL made hollow,
shall have nanges and webs at
least five-eighths (hD inches thick
and webs not more than SIX 10
inches apart.
All such blocks are to be applied
TO the metal in a bed OF cement
mortar and the hollow spaces pc
hind the blocks shall be filled solid
with fireproof material
All such covering shall De nrm-
ly secured to the metal.
Sec. Z. CONCRETE. Concrete
applied directly to the metal or
the constructive members. or on
metal lath. and at least one and
one-half uh) inches thick OUT
side OF the extreme metal hanges
and with hollow spaces behind the
coverings. filled solid with hre-
proof material. All such cover
Ing shalI be firmly secured to the
lower Ranges OF girders and beams
by wire or metal clips.
Sec. s.. METAL IN EXTERNAL
WALLS Metallic Structural Mem.
hers. located In External Walls shall
be protected on the outer slde py a.
least eight 90 inches OF brick OF SIX
(s1 inches OF other Fireproof Mate
rial or combination OF any two.
In skeleton Construction, the
mates and shelves carrying walls or
iireproofng may come within two
~ Inches of the face OF the wall.
The underside OF spandril beams
AT least six 90 inches of Fireproof
Material.
Sec .. cINDER CONCRETE
The use OF Cinder Concrete In the
construction OF floors. ceilings and
roofs. and for Fireproofing Btructur-
nj Members and also for filling back
OF Fireproof coverings OF metal. Is
See no. COLUMNS BOUND. For
Columns entirely surrounded by
Tireproof Blocks. these blocks shall
be securely bound with wire or not
less than number fourteen UD
gauge. co.sr,nn m,s, a.
tend from the constructive floor arch
or slab. Of story TO the un-
dsrsIde 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
Sec. IL. PLASTER NOT IN
CIUDED. The thickness OF the
Fireproof Covering herein called
for shall be exclusive of any
plaster afterwards applied. Lath
and plaster alone shall not be CON
sidered Fireproof
sec. IT, GYPSUM. Gypsum
blocks and tiles shall have not more
than six co per cent by weight OF
ffbre and webs not less than one t)
inch thick and the mortar used shall
be OF the same material OF OF Port
Dec Is" - FLOOR CONSTITUTE
TON The fioor OF FirepFoof Con-
struction shall be made OF.
(ay Brick arches not less than
eight (S) inches thick, having am
pie rise, well keyed and laid In ce-
ment mortar.