The Cairo bulletin. (Cairo, Ill.) 1???-1928, 1909-07-26

branches shall be carefully ascertain
ed by the city engineer OF the city, or
some other competent person. desig-
mated or appointed by the city council.
before The concealment Of the said
branches by back filing, by accurate
measurement from the center of the
manhole next below in the same line
of pipe, so that a true and exact rec
ord may be preserved for future lse.
and no Y branch shall be covered or
concealed before its exact location
has been noted and recorded,
Section 23 The sewer trench shall
be carefully filled. rammed and lamp
! ed in uniform layers of suitable earth
| or other suitable materials Of not ex-
ceeding twelve t12) inches in thick
ness; and in doing the back filling
care must be taken to fill In and com
pact the earth around the body of the
sewer pipe before beginning with thu
twelve (l2) inch layers. which are to
be rammed and tamped, in the doing
of which neither the sewer pipe nor
the line of the sewer must be In any
wise injured or disturbed and the
street surface above the sewer shall
be made firm and solid and altogeth-
err suitable to receive street paving
whenever the same shall be ordered.
Section "a. The work shall be car
ried on and fully completed In sections
of not exceeding two hundred t200D
fleet at a time and the back filling
|must be finished complete up to with
lin one hundred (10o) feet of the com
Ipleted pipe laying; and If any part or
Isection is left uncompleted, IL shall be
carefully aud fully protected by prop
er barriers and at night time also by
suitable red lights.
Msnho:es.
Section 25 Three (3) brick man
lholes shall be constructed in said
Walnut street, in the line of the said
new sewer herein provided for. and
one "a of said manloles shall be To-
Icated at each of the street intersec-
ions Of Eighteenth street. Nineteenth
street and Twentieth street with said
Walnut street, and they shall be cylin-
drical in shape,
All of said manholes shall be built
to the grade of the said streets In
which they are constructed, 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 f2p
| courses of hard burned brick laid fiat
and in cement mortar, composed OF
one CD part of Portland cement and
three CD parts of clean sand. They
shall be of four ca feet diameter at
the bottom and decrease or taper to
two (2) feet diameter at the top ard
| be built on foundations of two CD
courses OF hard burned sewer brick.
laid In the same kind of mortar, and
the bottoms and inside walls shall
"a plastered with the same kind OF
NOR ~ aud to the thickness OF at
least onc.half (A) an inch. In the bot
toms of the manholes shall be suit
able flow channel., troweled smooth.
and conforming accurately to the
grade and circle or the sewer pipe:
and In each Of them there shall
be placed threo-quarter tA) inch
wrought iron steps firmly embedded
in the walls thereof, and spaced
twelve G2) inches center to center.
They shall be provided with cast iron
rings and perforated covers or lids OF
not less than three hundred and fifty
(350) pounds combined weight each.
| The height of the said manholes
shall be such that the tops OF the
iron covers thereof snail be on level
with the grade of the streets In which
they are constructed.
House Connections.
Section &c, There shall he house
connections in the said Walnut street.
one On connection for each and
every lot or space of twenty-five (25l
feet extending from the sewer.
herein provided for. on both sides of
the street, to line or point ten t10)
feet from the lot line. They shall be
Of six te) inches issiie diameter and
shall have a fall or slant at the rate
Of one On foot in forty (40l feet from
The lot line to the connections of
the sewer and the pipe therefor and
the whole manner OF laying the same
and completing the house connections
shall conform. in all respects. as near
as practicable to the manner of LAYING
the sewer pipe of the sewer itself.
Section %. Care must he taken 10
| remove fully and completely all sur
plus or projections of cement whi h
may remain after the joints are
| fitted; and no sewer. house connsc-
| tons or inlet or part OF sewer shat
he left. or Offered to be turned over
by the contractors as complete. until
| all rubbish of every kind and de
Scription shall have been fully re
moved therefrom by h'm; and all
| lead ends of sewers or other mines