The Detroit times., 1911-02-23

,b) Hollow Burnt Clay. or
Terra Gotta or Cement Floor Blocks.
not less than eight (s) inches deep.
having proper skewbacks and Keys.
also shoes 20 nc the metal beams;
Hollow Blocks shall have Webs and
ribs not less than five-eighths lA)
inches thick. Such Floor blocks
shall be laid In Cement mortar.
tel Reinforced Concrete made
AS hereinafter described In Artistic
td) Other incombustibie ma:
terials which have been accepted
aud approved for moor construction
derwriters and by the Department or
Sec ia. FILL UNDER FLOORS.
Where wood floors are used over
Fireproof Floor Construction the
entire space between the top OF the
door construction and the underside
OF the finished floor shall be filled
with Generate. For this purpose
-cinder -concrete made OF one ID
part Portland Cement and not more
than eight 90 parts or well burnt
cinders may be used.
Sec. Is. CEILINGS. Ceilings In
fireproof construction. shall be en-
tireiy OF firCproof materials and
when used for ceilings only. they
may be OF light construction. but
must be so constructed that they
bear no weight OF floors or roofs.
Sec. 16. TYPE 2. PROTECTED
CONSTRUCTION. rhIs type OF con.
struction shall be applied TO all
buildings I'm which all enclosing
walls and the roof covering are TO
be made or incombustible material.
and all interior bearing walls of
beams and Orders made or metal
protected with fireproof material. rs
herein described for freproof con-
struction.
All stairs and elevator enclosures
shall he made entirely OF incorn-
bustible material
The floor beams or Joists. floors.
roofs and ceilings may be made OF
wood protected with ireproof ma
terial
Floor beams shall be covered on
top with at least one and three
quarters u%) inches OF solid wood
sub-fioor. having on II one layer OF
one and one-half uiD pounds per
yard asbestos paper and a seven
Fights Ga inch finished wood floor.
IL the sub floor, he less than three
and one-half $50 inches thick. IL
shall be splined or tonsued ano
grooved.
on moor joists, one % thickness
OF seven-e1ghts (Js) inch flooring
with two CD inches OF mortar may
be used in place of the one and
three-quarters uS) Inches or
solid floor and asbestos paper.
Floors ceilings and roofs, con-
structed or wooden beams and joists.
shall be covered on the underside
with at least one I'D inch OF fire.
proof material and at least one u)
coat OF plaster.
Metal hath end plaster shall not not
III inch of fireDrOOfinR
Where beams are used. as In mill
construction, and the underside OF
the flooring on the beams serves rs
the ceiling, this one ID inch of fire.
PROBING and plaster must be applied
70 the sides and bottom OF the beams
aud TO the underside OF the floor.
On the top or ceilings. one Cd inch
OF mortar or similar and approved
flre protection. provided all exposed
upper parts OF such ceilings. with
beams. etc. are so protected.
No wood shall be used for any
carrying partition or post.
Non-carrying partitions may have
wood stnds. but all wood studs must
be covered with metal lath and ce-
ment plaster also the soffit OF stairs.
Wood Turing for walls or wood
lath will not be allowed.
sT ssf n TYPE T6,, ,y MILL Of com CON-
struction shall be applied to all
buildings In which enclosing walls
and the roof coverings are to be
made OF incombustible material and
all interior walls OF brick or con-
crete and having columns and grid
ers. Floors, ceilings and roofs shall
he constructed with either metal or
wood girders and beams.
Beams and Orders shall be COW
cred on top with at least one and
three-quarters 1& inches OF solid
wood sub-fioor, having on II at least
one Cd layer OF one and one-half
UD pounds per yard asbestos paper
Tor two CD inches OF mortar) and
seven-eights GA inch finished wood
floor. III the sub floor be less
than three and one-half (3h) inches
thick. 10 shall be splined, or tongued
and grooved
The columns. IL of wood. shall
have q sectional area OF not less
than sixty 900 square inches.
The Orders and beams II OF wood.
shall have a sectional area OK not
less than fifty-six (56) square inches:
Columns. Orders and beams. II Of
tected Construction
Stair and Elevator enclosures shall
be made entirely OF incombustible
material. at least four 90 inches
thick
II such buildings are four 90 or
more stories in height. the stair and
elevator enclosures shall have self
closing, standard fire doors, and the
windows In Interior walls shall have
metal frames and wire glass.
Wood Turing for walls shall not
be allowed.
Wood posts shall have metal caps
forming a base for the post above
and the ends OF Orders shall be Sc
cured TO the cap In such a manner
as TO be self-releasing.
Wood beams and Orders having
cross section less than eighty
800 square inches. shall be In solid
pieces and where two CD or more
pieces are used TO form beam. they
shall be bolted together At intervals
of not over thirty-six $3.50 inches and
with bolts not less than one-half
az inch In diameter.
The ends of all wood beams and
girders resting In walls shall be cut
on beyel SO that the top edge OF
beams and Orders shall not extend
into the wall.
Sec. IS. TYPE 4. ORDINARY
CONSTRUCTIONS. This type OF con-
snSnss f in which Ge aP tSe ensiosns
walls are TO be OF incombustible ma
terial. but in which the interior
timber and iron structural parts are
not protected with fire resisting COW
ering.
Sec. 10. TYPE 6. FRAME CON-
struction. This type OF copstruc-
ton, shall be applied TO all buildings
In which enclosing and interior walls,
floors. etc, are to be constructed
entirely OF wood.
Wood frames covered with brick.
stone or cement veneer, shall be
oclassed I'm this type.
Sec 20. TYPE g. SKELETON
CONSTRUCTION. BY this term
shall be meant all buildings I'm
which all internal loads and
strains, or both internal and
external loads and strains are
transmitted TO the founda-
tions by a skeleton or
or reinforced concrete. Such build
ing may be fireproof or pro-
tected construction, or may have
mill construction floors and all
sLaiato, oanafrucffon buildings must