The Detroit times. [volume] (Detroit, Mich.) 1903-1920, 1911-02-20

1b) Hollow Burnt Clay or
Terra Goltu or q ment Floor blotkf.
NOT less than eight 60 lnchc. deep.
having proper sAeHharks and keSs.-
also shoes to a. the metal hcafs.
Hollow blocks shall have Webs aud
rios not less than hve-eighths tfs)
inches thick Such. Floor Blocks
shall be laid In Cement mortar
(c) Reinforced Concrete made
as hereinafter described In Article
(d) other incombustibic ma
teria,s which have been accepted
and approved for floor construction
by the Nauonal bonrd OF flre uh.
derwriters and 10y the Department OF
Sec. ID Fill UNDER FLOORS
Wherc wood floors are used over
Fireproof Floor Construction the
entire space between the top OF the
floor construction and the underside
OF the finished floor shah lac filled
With Concrete. For this purpose
Cindcr Concrete made OF one CD
part Portland Cement and not more
than eight (N parts OF we'll burnt
clnders may be used.
Sec. 10. CEILINGS. Ceilings In
fireproof construction. shall be- en-
tircly of ircproof materials and
when used for ceilings only. they
may b. OF light construction, but
must be So constructed that they
bear no weight or floors or roofs.
Sec. Is. TYFE 2 PROTECTED
CONSTRUCTION. This type OF con.
struction shall he applied 10 all
buildings ia which all enclosing
walls and the roof covering are Ia
be made Of incombustible material.
and all interior bearing walls 1T
brick or concrete or having columns.
beams and Orders made az metal
protected with fireproof material AS
herein described for freproof con-
structlon.
An stairs and elevator enclosures
shall he made entirely OF incom-
bustlble material.
The floor beams or Joists. floors.
roofs and ceilings may be made or
wood protected with fireproof ma
tcrial
Floor beams shall be covered on
top with at least one and three
quarters u%) inches of solid wood
suih-iioor. having on IL one layer OF
one and One-half uia pounds per
yard asbestos paper and a seven
Fights Cs) inch finished wood floor.
IL the sub floor be less than threc
and one-half (3ia) inches thick. IL
shall he splined or tongued anu
grooved
ON floor joists. one % thickness
of seven-eights - inch flooring
with two 60 inches Of mortar may
be used I'm place OF the one ana
three-quarters IA) inches OF
solid floor and asbestos paper.
Floors ceilings and roofs, con-
structed OF wooden beams and joists,
shall be covered or the underside
with at least one GD inch OF fire.
proof material aud at least one I'D
coat OF plaster.
Metal lsth and plaster shall not
be deemed sufficient for the one
10 inch OF freprootng
Where beams are used, as I'm mill
construction. and the underside OF
the flooring on the beams serves as
the ceiling. this one % inch OF IRE
proofing and plaster must he applied
TO the sides and bottom OF the beams
and Ia the underside of the fioor.
On the top OF ceilings. one CD inch
or mortar or similar and approved
material will be deemed sufficient
fire 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 studs. but all wood studs must
be covered with metal lath and ce-
ment plaster, also the sofiit OF stairs:
Wood Turing for walls or wood
Hath Will not be allowed
sTRUCTIoN This type OF con.
struction shall be applied to all
buildings In which enclosing walls
and the roof coverings are TO be
Uldue or ncOmDuStiDtr ntteFlbl anu
all interior walls of brick or con-
crete and having columns and grid
ers Floors, ceilings and roofs shall
be constructed with either metal or
wood girders and beams.
Beams and girders 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 % layer or one and one-halr
Gis) pounds per yard asbestos paper
N W. I'm nf mo "a
seven-eights 90 inch finished wood
floor. II the sub-noo- be less
than three and one-half (3ia) inches
thick, IL shall be splincd or tongued
and grooved.
'rhe columns. IL OF wood. shall
have n sectional area OF not less
than sixty 600 square inches.
The Orders and beams IL of wood.
shail have a sectional area OF not
less than fifty-six (56) square inches.
Columns. girders and beams. IL Of
metal, shall be covered as In Pro
tected Construction"
Stair and Elevator enclosures shall
be made entirely OF incombustible
material, at least four ca inches
thick
II such buildings are four "a or
more stories In height, the stair and
elevator enclosures shall have self
closing, standard fire doors. and the
windows I'm interior walls shall have
metal frames and wire glass.
Wood Turing for walls shall not
be allowed.
forming a base for the post above
and the ends OF Orders shall be Sc
cured to the cap In such a manner
as 10 be self-releasing.
Wood beams and girders having
cross section less than eighty
800 square inches. shall be In solid
pieces and where two (2) or more
pieces are used TO form a beam, they
shall be bolted together at intervals
or not over thirty-six $3.50 inches and
with bolts not less than one-haif
psl Inch in diameter.
The ends of all wood beams and
girders resting In walls shall be cut
on bevel SO that the top edge OF
beams and Orders shall not extend
Sec. IS. TYPE 4. ORDINARY
CONSTRUCTION. This type of con-
strqctlon shall be, applied TO all
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 5. FRAME CON-
structlon. This type OF construo-
ton. shall be applied to all buildings
in which enclosing and interior walls,
floors. etc. are TO be constructed
entirely Of wood.
stone or cement veneer, shall be
Sec. 20. TYPE 8. SKELETON
OBSTRUCTION. BY this term
shall be meant all buildings IN
which all internal loads and
strains, or both internal and
external loads and strains are
transmitted to the founda-
tons rs skeleton or
framework OF iron or steel
or reinforced concrete. Such build
t teT "c eSnstTucti Erepr or may have
mill construction floors and all
ekeleton construction huildin 90 must