The Detroit times., 1911-02-23

Sec. :. TILE. All tile for moor
or wall construction or for fire-
PROBING purposes shall be made OF
pure clay. well burned. with webs
and ,s asnfs, mot mot , les thar aS sys
rounded Alists at ali internal inter
such tile may be -hsrd burned"
porous" or semi-porous
Sec. 4. STONE. Stone herein re-
fssTss s.S nc o fG %s as ,ons 81 81 o so
MERGE. Any other building stone
seaaily - strong and durable may
stone used In concrete for foun-
srom ART S a"d dust cream ana snail Sc
broken TO pass through a two I'D
inch diameter ring. III used IN fire-
PROBING or floor construction the
stone shall be broken for three
su sss' ~ sa ssae rip Nav b. either
lake. pit or bank sand free from
organic matter and clean and
Sec. Q LIME. The fresh burned
autckllme of commerce. or nrst
Sec. z. CEMENT. Any natural
cement which II the product OF call
cination OF natural rock. as the
Akron. Louisville or other n.y.
Sec roRrLANp CEMENT.
The standard Portland. cement OF
commerce. either domestic or for
eign, which when tested neat, after
one "a day spent In air, shall be
capable or sustaining without rup-
drsd t2ooj pounds per square inch,
and After one Cd day In air and
ak CD days In water. be capable OF
sustaining without rupture a ten,
sile stress of Ave hundred (eoo)
pounds per square inch.
For freproofing or foor construc-
tion. the highest grades OF P2rt,
land cement shall be used. IL shall
be OF uniform consistency ana OF
such fineness that not more than
ten flol per cent VIII De re,ec.eSS
(25,O00) meshes per square inch,
and in addition II shall be capable
of sustaining without rupture
tensile stress OF at least six num-
dred (soo) pounds per square men
ty-seven (2f) days in water. and
all cement shall be subjected TO
such other physical or chemical
tests as may be required In TINS
Sec. .. MoRTARs. tA) Lime
mortar shall be made from one lll
part fresh lime and not more than
four ca parts of sand.
OBJ Cement mortar shall De
made from one "a part cement
and not more than three ls) par"
(C) Cement and lime mortar
shall be made with equal parts OF
cement and lime. and not more
than three CD parts or SAND 70
each whole part OF cement aho
lime.
c6 Sec ,S Proportions gsc oIspIqtisn. OF 81
materials for concrete used In
footings. foundations. walls and re-
tanning walls shall be as follows:
Not less than one part or cement
10 three (3) parts of sand, and nve
Stag or gravel. to be thoroughly
mixed with the proper proportions
OF clean water.
In quantities OF over nifty. (so)
cubic yards. the concrete 10 to De
machine mixed.
All concrete shall be used imme-
diately after mixing. and the ma
terials shall be mixed by measure.
Sec. IL. PORTLAND CEMENr
BRICKS. Portland cement bricks
made OF Portland cement OF the
same dimensions as common brick.
may be substituted, except for
walls, piers and buttresses sustain
ing heavy weights. provided said
Portland cement brick shall con-
form to the tests for materials pre-
scribed In this Ordinance. ,
Sec. ~. ARTIFICIAL STONE.
Artificial stone made of Portland
cement and incombustible and
waterproof material. may be used
as n substitute for any natural
stone. But no artificial stone con-
tanning. more than fifteen (ls per
cent OF lime or crushed limestone.
shall be used as a Intel or bearing
part of any building over four CD
ArtinciaI stone must conform to
the tests for materials prescribed
In this Ordinance.
wrought iron shall b fibrous.
tough and ductile. uniform In char
acter and having an ultimate ten
silc strength of not less than
forty-eiyht thousand (4s.0o0l
pounds per square inch nrct. with ia .,,c
limit OF twenty-six thousand (26.-
0o0) pounds and an elongation OF
eighteen GSD per cent In eight I'd
inches. including fracture when
tested in small specimsns.
Sec. -. CAST IRON. Except
where chilled iron IL specified. all
castings shall be tough grey iron,
free from injurious cold shuts or
blow holes. true TO pattern ana
having an ultimate tensile strength
OF not Tess IMAM slAteen
$4,000 pounds per square inch.
Sample pieces one I'D inch
square, cast from the same heat OF
metal I'm sand moulds. shall be
capable OF sustaining on a clear
span Of four 90 feet and eight t0
dred (e0o) pounds when tested In
the rough bar.
Sec. Is. STEEL CASTINGS Steel
castings shall be made by the open
hearth or crucible process and shol
be free from injuries, and blow
holes and shall have the following
minimum requirements:
neaied.
sample bars to develop at least
an ultimate strength. Of seventy
thousand (70.600) pounds per
square inch, with a yield point or
commercial elastic limit of thirty
one thousand I'VE hundred (31. Soo)
pounds per square inch and nm
eiongation OF eighteen Us) per
cent In two CD inches, including
fracture and q reduction of twenty
I'VE (26) Der cent In area.
Sec. 1e. STRUCTURAL STEEL
All structural steel including rivets,
shall have their physical and chem
zeal properties In accordance with
the Manufacturers Standard Steel
airy 9, 1908, and as found In the
hand books OF steel manufacturers
Sec. IL. TESTS. The Depart
ment of Buildings may require, &C
any time, certified copies OF full
Inspection from recognized experts.
for any OF all materials used In
buildings OF Types 1 and 2 and no
such materials shall be concealed
or built upon, until the Depart
rnent OF Buildings. upon their re-
quest, shall have been furnished
with satisfactory proof that such
materials and Workmanship are
fully equal to the standard.
Sec. Is. NEW MATERIALS. Be-
tofore employed are used as con-
str,rctionai parts OF buildings or
structures, permission must be OBJ
tained from the Department or
Ruiidings, who shall apply such