The Cairo bulletin. (Cairo, Ill.) 1???-1928, 1909-07-28
Manholes.

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sewer in said West Twenty-frst
street, one % of said manholes being
i located at each Of the following
manned points, to-wit. at point one
hundred and eighty 0S0) feet west
Iof the west line of Holbrook avonte /;
at point four hundred and thirty
| liolbrook avenue at point seven
hundred and five (105) feet west of
the west line of HoiDrook avenue; at
a point nine hundred and siXty-ive
(9G5) feet west OF the west line Of
l1olbrook avenue, and at a point
twelve hundred Q200) feet west of
the west line Of HolDrook avenue, and
they shall be cylindrical in shape.
All of said manhoes shall be built
to the grade of the said street, and the
bottoms thereof shall be on level with
the bottom Of the sewer inside. All
of the said manholes shall be con
structed as follows; The walls of the
same shall consist of two co courses
of hard burned brick laid fiat and in
cement mortar, composed Of one 1)
part of Portland cement and three
ca parts of clean sand They shall
be- of four al feet diameter at the
bottom ard decrease or taper TO two
(2l feet diameter at the ton and he
built on foundations of two t2l
courses of hard burned sewer brick
laid in the same kind Of mortar. and
tho bottoms and inside walls shall be
plastered with the -ame kind of
mortar and TO the thick
ness of at least one.half ga an
Inch. In the bottoms Of the manboles
shall be suitable flow channels. trow.
leled smooth. and conforming accurate.
Nv TO the grade and circle of he sewer
Ipipe: and in each of them there shall
be placed three.auarter GA inch
wrought iron stems firmly embedded
In the walls thereof and snacnI
twelve N2) inches center to center
They shall be provided with cast-iron
rings and perforated covers ar lids of
nor less than three hundred and fifty
/ (35O mounds combined weight each
he such that the tons of the iron CIV.
ars thereof ebau no on a lavol with
Tho grade of tbe s,r.a, IN which thev
many no constructed
Snctic,,. % Cara mist he ta1,n, IN
remoye mllv and ccmnIetelv All sur.
plus mr. nrotections of cement which
n,av ROMAN after tho ,o,pts arc fittad.
and M eax.r ar inlo. ar mart If SOW.
ar shan he 1eft a., offeraa - no trrr.
ed ovor nv tho contractor ae corr.
n,,ta min oil rrhhieb of avorv Lind
ana doecrintior ebou have boon fu,l,,
removed tbororror, IN, aim. ord all
ldeod ords re souors or otbar rinos
shah he carnf,lIv closed nv him with
aartbonuaro cans ar With hric,, ana
nor4or CO nc 70 avo1,,ln al r,,nrin,
sand and char materials of ovor>,
Find Tho eortb nv p,o.ariaIs avca
vatal sban Lo denoeiteJ on tho sidae
of The sewor tranches bavond tho
roach of eridae ami tne wo,x ebo1l no
dono and c.rried an ca &c IN subject
the nuhlic IN tho uee NJ tho etroets
and sido walks 70 ae 1itt,a incopvoni.
encn os uossihle. and al side walks
and stroet CROSSINGS shall no kant In
safe condition far uve Nv the nuhIic
Inv tunneIine or nv secureIv bridping
The trenches excont in cases whore
- may no pocaeearv to close tba etreot
or side walk mini tbo worl, within
tho etroot is copnlotoa
Section "a Where onv railroad a,
street car line is IN he crossed mr. in. |
with in tho co,s+r,otio, ~
tho eawer mr. in doing tho elIi,g M. J
i,co of tba time and manner 90 do;rc
the vorx p,uet bo givor ~, tho CON.
tractor n tho connonios or norsors
tho railroad mr. street COZ
limo
7, oxcorat,rg ora roaI,ir, Tho
trarcbas ord :, oors+ructirc tho
sowor coro rust no tat,a, no4 20
rrovo ~ ,r,uro o,r sos or vo.or
r,nos ,o- 20 ,,o,.o ~ ,l,.+,,-h onr