The Cairo bulletin. (Cairo, Ill.) 1???-1928, 1910-04-18

snall De the bottom course and shall
be five 80 inches in depth and shall
be laid on eight (s) inches OF clean
TENDERS thoroughly moistened ari
tamped to conform to the outline u
the form for the combined curb and
gutter, The second course shall he
the finishing or wearing course az
surface and the same shall be ono
"a inch in depth.
The bottom course shall be com
posed of one a. part of Portland
cement and five f5) parts Of washed,
river gravel OF sizes ranging from
gravel OF two ca inches in diameter
| down to coarse sand. and the same
| shall be graded so that the gravel and
Island shall not cantain more than
twenty (20) per cent. voids. and tue
| same shall be entirely free from
mud, dirt dust and loan. The gravel
and cement used in constructing Its
bottom course shall first be thor
onghly mixed dry and sufficient clean
water shall then be added by slowly
sprinkling to give the mixture the
proper consistency and the whole
shall be constantly stirred until the
4 same is thoroughly mixed.
4 This mass shall be spread in forms
!, upon the cinder foundation and shall
/ be rammed until all interstices are
} thoroughly filled with the mortar.
r particular care being taken that this
Y bottom course is well rammed and
consolidated along the outer edges.
ri After this bottom course is com
I pleted and before 1t has had time TO
+ begin to set, the finishing or wear
O. ing course shall he added. The fin
] fishing course shall consist OF stiff
! mortar composed of one "a part Of
J Portland cement and one and one-half
loo parts OF clean, sharp. coarse
Island and shall be laid to the depth
4 LOT one az inch and shall be care
i fully smoothed to an even surface,
:. which, after the first setting takes
{ place, must not be disturbed by adj
e ditional rubbing.
i. The curb and gutter shall be pro-
tected from the sun and wind for
\ twenty-four t24) hours after the com
{ plction, during which time IT shall be
i. kept moist by sprinkling.
Il The tops or upper edges OF the said
s curbing on both sides OF said pave
!. Iments shall be. when finished com
a plete, throughout Its entire length,
three (3) inches below the grade here
Q Iinafter specified for the center line Of
n the said brick pavement when the
. same has been completed.
r Concrete Foundation.
d Section s. Upon the said sub-grade
r and firm earth surface. so prepared
: land shaped as aforesaid. shall be laid
d Tor spread foundation OF Portland
n cement concrete, OF the uniform
= thickness OF five t5) inches. com
d rosei OF one ~ part OF Portland
4 cenrrt and eight tS) parts q
n washed, r'ver gravel Of sizes ranging
d from gravel Of two (2) inches q
e diameter down to coarse sand and
d the same shall be graded so that the
h gravel and sand shall not contain
e more than twenty (20) pcr cent
n voids. and the same shall be entire
d ly free from mud, dirt. dust and loan
It and shall be screened when neces
n sary. The gravel and cement shaI
e be thoroughly mixed dry and suf
e ficient clean water shall then be slow
~ added to give the mixture tbs
4 proper consistency and the same
d shall be thoroughly worked over w.t.
Y hoes. The concrete shall then bt
" turned and mixed until each piece oil
&c gravel Is thoroughly covered witt
y mortar
X The concrete thus prepared shat
., be Immediately placed In the wofl'
o. and be spread and thoroughly con
X pacted by ramming until free muf
n tar appears on the surface Tic
10 whole operation of mixing and layins
~ each batch of concrete shall be don'
N as expeditiously as possible with
he sufficient number of skilled men, an
or must be entirely completed before tn
le cement has begun to set. No re
g tempering of concrete shall be per
50 mitted, and any concrete IN which tn
er cement has begun to set shall be re
II jected.
rel Section .. All concrete TO De hse'
he In the work provided for by this or
is dinance may be mixed with suitable
ie concrete mixing machine. but no sucl
Of machine shall be used in mixing sucl
~ concrete until the machine to y
nc used In mixing such concrete shal
ne have been first approved by IN
n Board of Local improvements OF "a
I'd said City of Cairo.
ed Sand Cushion.
N Section TO- Upon the foundatiol
be thus prepared, as above required
- shall be spread a layer Of clean san
I'd of the Uniform thicknees Of two q
b inches; and upon this sand, as cusn
% ion, shall be laid the paving brick
" The Bricks.
r Section IL. The bricks shall p
n straight, regular in size and shapN