The Cairo bulletin., 1907-09-18

mixing and laying each baton OF con
crete shall be done as expeditiously |
as possible with sufficient number OF |
skilled men, and must be entirely com
pleted before the cement has begun to
set. No retempering OF concrete shall
be permitted, and any concrete in |
which the cement has begun to set
shall be rejected.
Section 16. Upon the foundation
thus prepared, as above required, shall
be spread layer OF clean sand Of
the uniform thickness OF two 20 In
ches. and upon this sand, as q cush-
ion shall be laid the paving bricks.
They must be closely and evenly laid
in true straight lines at right angies
to the curbing and all joints must
be broken at least three CD inches.
Whole bricks only shall be used ex-
cept In starting and finishing courses
lat the curb or at catch-basins. MAJ
holes, etc, in which case nothing but
half bricks shall be used; and Ia
breaking bricks for this purpose the
Joints must be cut straight and
square with the tops and sides Said
bricks shall be laid upon their edges
and shall be one course deep.
All the work throughout must be
done by skilled men and with the aid
OF proper tools.
When the bricks have been laid, the
surface shall be made smooth by roll
ling with roller weighing not less
than three CD tons nor more than
six 60 tons or where rolling Is I'M
practicable then by tamping with u
NINETY 600 pounds tamper upon
twelve az inch oak plank at least
| six go feet long.
The pavement shall then be thor
oughly wet by the contractor SO that
all soft bricks can be detected and all
Isuch bricks shall be removed and re-
placed with good hard ones; and all
defective bricks found in the pave
Iment shall be removed by the con-
tractor and be replaced with good
lcnes.
Section II. The finished subgrada,
the concrete foundation, the sand
cushion and the brick paving thereon
shall be parallel to each other and
lhave the shape and curve above de-
lscribed and the center line of the tor
and finished surface of the paving
when completed shall be laid to the
grade of the said Poplar street as
given in section twenty t20l Of this
ordinance.
Section rs, All materials used In
the construction and completion OF
said Improvement. as well as for the
lsaid catch-basins and manholes as fol-
the said pavement and curbing, shall
be of the first and best grade and
Equality. The cement used throughout
said work shall be of the best grad
J land quality Of hydraulic cement am
of the kind and description generally
known and called American Portland
/ ! Cement 1t shall be at all time,
| lsubject to such inspection and test
/ for tensile strength and other qualities
and properties as the Board Of Loca
, improvements of the City OF Cairo 0
: the City Engineer Of said city shai
find it proper to make.
The bricks shah be stralgft m 81
lar In size and shape and ~ e fast
ilaws and cracks. They shah nct 5'
less than 2kx4xS nor moro thai
l3hxix9 inches. They shali BIZ e8Qro .
lily made for paving purposes and saal
be hard and tough and thoroughly II,
rified. and must not absorb more tina.
four per cent of their weight In waite
after being broken and immersed fo-
lforty-eight (iSI hours. When desiret
by the said Board of Local Improve
ments or by the City Engineer Of th'
city, the bricks shall be submitted to ;
test OF one az hour in the Nationa
Brick Manufacturers Association
Standard Rather, and under condition!
lprescribed by that association, and !
the loss by abrasion during such ties
exceeds twenty (20) per cent of th'
original weight of the bricks tested
then such bricks shall be rejected
They shall not contain lime in sucf
quantities as to cause disintegratior
or cracking after being immersed il
water ten 10D days.
i Section 10. The crevices between
the gutter flags and. the brick pave
ment and between all brick joint.
shall be poured fun with an asphalt,
cement filler equal in quality to IN,
American Asphaltum and Kubbei
Companys Cement Filler.
Said filler shall be free from an,
coal tar or its products and shall
contain not less than 99ia per CEN
pure asphaltic bitumen, composed o
6S3 per cent. petrolene and 3l.2 pei
cent. asphaltene.
The specific gravity Of the file
shall be 0g9 Beaume at 60 degree.
Fahrenheit; it shall not commence L
melt below 1875 degrees Fahrenheit
nor to run" below 2l5 degrees Fab
renheit: nor shall IL become brittle
above Sc degrees Fahrenheit SAT-
/ asphaltic filler shall weigh approx
nately pounds per gallon at 60 de
lgrees Fahrenheit
The said asphaltic cement file
shah be poured at a temperature .
i25 degrees Fahrenheit by means o
pouring cans especially adapted to tn
purpose. No asphaltic filler shall b.