The Cairo bulletin. (Cairo, Ill.) 1???-1928, 1912-09-03

oe securely protected by blanks.
| Section 6. The top of the gutted
Rag shall be d continuation OF mi
curve or arc OF the top surface Of mi
finished pavement. The combine
ton curb and gutter shall be cotI
struoted with joints eight (g) fed
apart in the following describe|
manner: Said concrete is to be pre|
pared from washed. river gravel
sand and Portland cement and sha
consist of two (2l courses. The firsI
course shall he the bottom eours|
and shall be five (5) inches II
depth, and shall be laid on eigh|
tS) inches OF clean cinders tho,|
loughly moistened and tanned II
conform to the outline of the ford
for the combined curb and gutter
The second course shall be the finish
ing or wearing course or surfad|
and the same shall be one ca incl
in depth.
The bottom course shall be conI
posed of one Cd part Of Portland
cement and five CD parts of waslI
ed. river gravel of sizes raneinI
from gravel Of two CD inches II
diameter down to coarse sand, AMI
the same shall be graded so that lid
gravel and sand shall not contaiI
more than twenty (20) per ceni
yoids, and the same shall be entird|
ly free from mud dirt, dust AMI
loan. The gravel and cement nse|
in constructing this bottom cours|
shall first be thoroughly mixed drI
and sufficient clean water shall the
be added by slowly sprinkliug II
give the mixture the proper cofI
sisteney and the whole shah be colI
stantly stirred until the same
thoroughly mixed
This mass shall be spread in fornI
upon the cinder foundation and sha
be ramned until all interstices al
thoroughly filled with the mota
particular care being taken. that TIL |
bottom course IL we'll rammed and
consolidated along the outer edges
After this bottom course is conf
| pleted and before 1t has had time
begin to set, the finishing or wea
ing course shall be added The filI
ishlng course shall consist Of a still
motar, composed Of one (l) part n
Portland cement and one and onI
J half { X parts of clean, shar
coarse sand, and shall be laid to Til
depth Of one t1) inch and shall d
carefully smoothed to an even SUI
face. which, after the first settinI
takes place. must not be disturbt
by additional rubbing.
The curb aud gutter shall he prs
tected from the sun and wind i'd
twentyfour (24) hours after til
completion, during which time
shall be kept moist by sprinklngj
| The tops or upper edges of It'd
said curling on both sides of sa
pavement shall be, when finisha
| complete, throughout its entil
length one inch below the grad
hereinafter specified for the centd
line of the said brick pavemers
when the same has been complete
Concrete Foundation.
| Section 7 Upon the said sui
grade and firm earth surface so pri
pared and shaped as aforesaid, shaiE
be laid or spread foundation
Portland cement concrete, of tH
uniform thickness of five cd III
ches, composed of one (1) part I
Portland cement and eight go parY
Of washed river gravel of sizes rand
ing from gravel of two CD inchq
| in diameter down to coarse sand, aIst
the same shall be graded so TIL.
| the gravel and sand shall not cot
tain more than twenty (20) pfl
| cent voids, and the same shall L
| entirely free from mud, dirt, du'l
and loan and shall be screened who
necessary The gravel and cemet
shall be thoroughly mixed dry ar
sufficient clean water shall then
| slowly added to give the mixture tt
lproper consistency and the sam
| shall be thoroughly worked ov,
with hoes. The concrete shall the
be turned and mixed until each pies
Of gravel is thoroughly covered viii
Imotar.
| The concrete thus prepared sha
| be Immediately placed in the worr
and be spread and thoroughly con
pacted by ramming until free mo-
1 tar appears on the surface In
whole operation of mixing and la
| ing each batch of concrete shall
done as expedtiously as possib
with sufficient number of skillfE
men, and must be entirely completfN
| ed before the cement has begun ]
set. No retempering Of concrep
shall be permitted and any concrel
in which the cement has begun
set shall be rejected.
| Said concrete foundation inclui
ing the gutter-flags of said conf
bined curb and gutter, shall be
| the width between the inner facl
Of the cufbs, of thirty--six $3.50 fe'i
| east of Commercial avenue and thiFI
| " 1907 feet west of Commerci.
| avenue.
Section g. All concrete to be ust
| in the work provided for by this Of
| dinanee may he mixed with sui
| nhlr aonnrnia rnivtuv run chiua hE