The Detroit times. [volume] (Detroit, Mich.) 1903-1920, 1911-02-21

&C. 49, - ~ -r--
ed IN the proportion oE |
sand. before any regular 6>1
~ poured y
drawings, the time and <ho G1@
the pouring Of the di3erc1<
Sec 10. FFEEzINo VI[1
Err So9erste work .haIl -
~ degrees Fzhrenheit OF ~.
Less sufficient precautions otC
ken to prevent the concro<o o.
freezing after having been ~
surancs il had that al fros{
left the concrets and ~ hoD q
tanned Its permanent set
NO frozen material or m4t4tI
covered with ice shall Be nee6
crete laid during hot wsafher 81
be thoroughly wet with clean 49,
ter twice daily, during the 0II
week after placing.
The broken stone. Stag or Grov<
must be thoroughly wet before pIn1
Sec 81. CONCRETE coLU1
PROTECTION. The outer shc{@ eli
a hoped column or latticed o<r1@
tural steel column. shall b &C.,
side and a. ,n,., n nn, e ssy
determining the safe load.
In fireproonng q struc<u
steel or cast iron columns ~
concrete. q reinforcement oong)D[~
Ing OF wire fabric or Wire TO-
shall De Embedded In the concro
SEN Sec "a. TILE AND coNcRrrr
FLOOR CONSTRUCTION. Who0
tile and concrete constructors ~
used for floors. the tile shall ~
sound, hard-burned tile Of un1>
The concrete joists shalt -
parallel and In. perfect line And
not less than four t4) inches MID.
Should concrete be needed a
the top OF the tile for compress
the same time as the joists ana it
must be Of the same mixture.
The tile should be thoroughlv
soaked with water before pouring
Sec. p; MoNoLITHIc WALL
walls. constructed In places With
out reinforcement. shall be the
full thickness prescribed in THE
ordinance for brick wallis, ana
with steel or iron reinforcsmeof,
fssy n shall be 2; least sixty-s.x
CURED for brick walls.
Reinforcement shall not -
less than one-quartere (1-l) Q1
one I'D per cent OF the area ~
the cross section In each .directien.
,,.. Such concrete shall .
worked and all voids filled.
Exposed top surfaces shall -
thoroughly cleaned and dampened,
before adding the next succeeding
TESTS. All reinforced con-
crete construction shall g
sona1 and constant super
vision OF competent super
tory TO the department Of build
II loading tests are considered
necessary by the department. q
buildings the contractor must "
prepared within q reasonable time
tests on q panel or panels a. may
Such tests shall be made after
centering has been removed one
l1) month. Each panel shall ps
q uniformly distributed load equAI
TO twice the superimposed load
for which the structure has been
designed and under such test the
detection must not exceed one
four-hundredth t1-400) part q
the span and the member must e.
turn TO Its normal position afte1
the removal OF the load.
The department. OF bulldtn91
may require sworn copies or test
on all dement's used In any rein.
to have been made by one OF IN
Standard Testing Laboratories
The department of buildin9l
may require special tests made 81
any carload OF cement or any por-
ton thereof or Of any Other ma ma,
crete work, when the department
OF buildings shall have reason g
question the full strength or quail
fty Of such cement or other ma
terial. All such tests shall -
Testing LABORATORY, and at the &:
pense of the owner Of the cement
or other material TO be tested.
CEMENT BRIoUETTs. The min.
imum requirements for tsnsii,
inch square In section. shall be q
For Neat Cement.
. ~ hours In moist air. ZOO lbs
z days Zone day in air. six n
WaterDs oVV IDS, 90 Gays toho 49,
IN In air. twenty-seven in water>
Wv For One "a Part Cement and
Three (3) Parts Standard Sand.
days Zone day In air. six n
water). It's lbs; rs days Zone dAy
IN air. twsnty-seven In watsrS
ARTICLE XIV.
Concrete Block C0nstruction.
Section I: WHERE ALLowEp
AND MATERIALS. Concrete build.
ing blocks may be used for buiio.
where the blocks are approved By
the Department of buildings
These blocks shall be made OF one
part standard Portland cement q
not more than three parts of cieaI
crushed rock or other suitable ma.
terial. The materials used shall
be free from dirt and other foreign
matter. properly mixed and manip-
Sec. .. MAXIMUM PERCENT.
BLOCKS USED FOR DIFFERENT
spaces OF any block shall not sx.
coed the following percentages o.
the total cubic contents or tn
and In no case shall the thickness.
cot any web OF any block be less
than one-quarter Of the height Of
Stories LIST. 2nd. sra attn
] AND AND I ssss$ az ASS ass
Sec. 8. THICKNESS OF WALLS
The thickness OF walls for any
building where concrete blocks are
used, shall be the same as that re-
Quired for brick walls.
Sec 4 FACING OF BLOCKS
Where the face OF the wall only u
TO be OF concrete building blocks
and the backing OF brick. the con-
crete blocks must be strongly bond
ed to the brick with concrete OF
brick headers. projecting four a.
inches into the brick work. every
fourth (4th) course being a header
course, or bonded with metal wal
ties. spaced not to exceed eighteen
(ls) inches in each direction.
Sec. s. MORTAR. All walls
49,. .NoArafa hlnNEa nuaH