The Cairo bulletin., 1907-09-18

and the said curb shall be well sup
ported with natural earth backing
which shall also be well tamped AM
made firm and solid. The said cinder
foundation and combined curb and
gutter shall be so constructed. set
ana placed that the distance between
Tie inner faces OF the curbs. on the
sides OF the street, shall be thirty
(3O feet. The top surface Of the set
and finished curb shall be at all
points and places one ca inch below
the level or elevation OF the top sur
face of the finished brick pavement at
the center line OF the said street. Al
ali street intersections, the cinder
foundation and the combined curb ami
gutter shall be extended around, with
curves OF an eight (S) foot radius, to-
the lot line on both sides Of the inter
secting streets, so that the distance
Of the face of each curb, at the lot line
shall be fifteen (l5) feet from the
center line OF the street on streets
sixty 900 feet wide, and twelve CID
feet on streets fifty (5O) feet wide
except on Twenty-eighth street which
Is already paved; and between the
ends Of the curbs SO extended around
~ the lot line on intersecting streets
and along the street line natural
limestone marginal curbs. six 90
inches thick and twelve (l2) inches
vide or deep, shall be set on natural
earth foundation and be well sup
lnorted. on the outer sides, with
natural earth well tamped, and said
limestone curbing shall be so set and
nlaced as to be flush with and support
the brick paving which, at all street
intersections is to extend across the
entire width OF the said street.
Section 49, All curbing shall be
set and finished complete before
the completion of grading, so that
| the said curbing may be used as
guide in completing the finished
subgrade, and to complete the SAID
subgrale, template or other proper
means must be used by the con
Tractor: and after the grading is once
completed and finally and thoroughly
rolled throughout the street shall be
wen and securely blocked off so as to
prevent vehicles from entering there
Ion. except those containing materials
/ for the work, and in that case the
1 surface or subgrade shall be securely
! protected by planks.
Section IA. The top OF the
gutter flag shall be continuation OF
the curve or arc of the top surface
Of the finished pavement. The comb
nation curb and gutter shall be con
structed with joints eight go feet
apart in the following described man
ner: said concrete is to be pre-
pared from crushed stone, sand ant
II Portland cement and shall consist O.
two (2) courses. The first course
!, shall be the bottom course and shall
be five CD inches in depth, and shal
! be laid on eight lS) inches OF cleal
cinders thoroughly moistened an'
tamped to conform to the outline 0
the form for the combined curb AM
. gutter The second course shall b.
the finishing OF wearing course o.
surface and the same shall be one a.
I inch in depth
The bottom course shall be com
posed OF one "a part OF Portland
lcement, three CD parts OF clean sane
and six Co parts of broken lime
stone Of sizes that will pass through 7
Iring of three-quarters (%) of an incl
internal diameter, which shall be en-
ltirely free from dirt or dust. The
sand and cement used in constructive
this bottom course shall first be thor
Ioughly mixed dry, sufficient clean
water shall then be added slowly bN
lsprinkling and the broken stone shall
then be added and the whole con
stantly stirred until thoroughly mixed
lThis mass shall be spread in forms
upon the cinder foundation and shall
be rammed until all interstices arc
thoroughly filled with the mortar par
lticular care being taken that this bot
tom course Is well rammed and con
solidated along the outer edges.
After this bottom course is com
Ipleted and before II has had time ia
begin to set. the finishing or wearing
course shall be added. The finishing
course shall consist of stiff mortar
composed of one On part of Portland
cement and one and one-half az
parts Of clean sharp. coarse sand and
shall be laid to, the depth OF one tl)
inch aud shall be carefully smoothed
to an even surface. which, after tht
first setting takes place. must not b.
disturbed by additional rubbing.
The curb and gutter shall be pro
tected from the sun and wind for
ltwenty-four (24l hours after the com
pletion during which time II shall b.
kept moist by sprinkIing.
The tops or upper edges OF the SAID
curling on both sides of said pave
ment shall be. when finished com
plete. throughout it's entire length
one inch below the grade herein
after specified for the center line o.
the said brick pavement when tbs
same has been completed.
Seton Is. Upon this subgrade an
firm earth surface. so prepared ans
shaped as aforesaid. shall be laid 81
spread foundation of Portland &c
ment concrete. of the uniform thick