The Cairo bulletin., 1910-04-20
Ordnance No. 22s.
Concluded from Third page.)

then such bricks shall be rejected.
They shall not contain lime in such
quantities as to cause disintegratlon
or cracking after being immersed in
water ten Q0) days
Nosed bricks shall be used on the
inside of the car track or tracks of the
said Cairo Electric and Traction Com
pany and the Cairo and st. Louis
Railway Company next to the rails OF
said track or tracks, said nosed
bricks to be of the same general di-
measions and character as the bricks
to be used for the balance of said
brick pavement
Laying the Bricks, Rolling and Wet
ting Surface, &C.
Section r.. The bricks must be
closely and evenly laid in true straight
lines at right angles to the curbing;
and all joints must be broken at
least three CD inches. Whole bricks
ouly shall be used except in starting
and finishing courses at the curb or
at catch-basns, manholes, etc, in
which case nothing but half bricks
shall be ueed and in 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.
When the bricks have been laid,
the surface shall be made smooth by,
rolling with a roller weigh
Ing not less than three CD
tons nor more than six CO. tons;
or where rolling Is impracticable
then by tampng with ninety 600
pounds tamper upon twelve Q2)
inch oak plank at least six 60 feet
long.
The pavement shall then be thor
oughly wet by the contractor so that
all soft bricks can be detected and all
such bricks shall be removed and re-
placed with good hard ones; and all
defective bricks found in the pave
ment shall be removed by the con-
tractor and be replaced with good
ones.
Expansion Joints
Section Is. There shall be expan.
sion joints or cushions across the
pavement and at right angles to the
curbing, every twenty-five (25) feet,
and a continuous like joint or cushion
between the paving and the gutter,
made of hot asphalt or No. Six co
pitch, one "a inch thick, and extend.
ing from the top of the paving down
to the bottom of the bricks.
The Filler.
Section IA. After the rolling of the |
brick is completed, the filler or ce
ment grout, which shall be composed |
of equal parts of clean, sharp sand |
and Portland cement, shall be made |
and applied in the following manner. |
The sand shall be dry and not ex-
ceeding one-third 0-3) of bushel |
thereof, together with a like amount |
of Portland cement, shall be placed in |
a box and mixed dry until the mass |
assumes an even and unbroken shade |
and then clean water shall be added |
so as to form liquid of the consistency
OF thin cream. From the time the wa |
ter IS applied until the last drop is re- |
moved and floated into the joints of |
the brick pavement. the grout shall be |
kept in constant motion The mixture |
shall be removed from the box to the |
street surface with scoop shovel |
the same being all the while Stirred |
in the box as the same is being thus |
emptied, and from the moment IT
touches the bricks, it shall be thor |
oughly swept into the joints or crew |
ices. The work of filling should be |
thus carried forward in line, three CD |
of such boxes, as above described |
being used until an advance of from
fifteen G5) to twenty t20) yards has |
been made, when the same force and |
appliances shall be turned back and |
cover the same surface again in like |
manner, except that the mixture OF |
the second coat may be slightly |
thicker than the first. This process
shall be continued until all of the
spaces between the bricks are thor |
oughly filled. After the joints are all |
thus flush with or filled to the top OF
the brick and sufficient time for evap- |
Grafton has been allowed so that a
coating Of sand will not absorb the |
moisture, one-half (1a) of an inch in
thickness of sand shall be spread over
the whole surface; and in case the
work is subjected to a hot summer
sun, an occasional sprinkling with
water, sufficient to dampen the sand,
should be followed for two or three
days. The grouting thus finished must
remain absolutely free from disturb
ance or traffic of any kind for pc
Rod of seven 60 days.
Section 15 The finished ~sub-grade,
= the concrete foundation, the sand
cushion and the brick paving thereon
shall be parallel to each other ana
have the shape and curve above de-