The Cairo bulletin. (Cairo, Ill.) 1???-1928, 1912-09-05

VI the ptH SNAIL De CAREFULLY Eapetf
smooth and clean and the annulal
space shall be free from dirt or
mortar. A narrow gasket of pack
ing shall be properly calked intd
each Joint after which Portland Gel
'ment mortar, composed of one (1f
part OF cement and one "a part og
clean sand, shall be introduced there4
IN, and such gasket shall be of one
piece OF sufficient length to reach
entirely around the pipe and of suf9
helent thickness TO bring the bot
toms OF the two pipes to the same
level No joint shall be cementeri
until the gaskets OF the next two
Joints In advance are properly in
serted. Special care must be taketl
10 I'LL with mortar the annular sDactl
at the bottoms and sides as well al
at the tops Of the Joints. After suctE
space has been filed. the eemenl
having been compacted with L
wooden or iron calking tool, a neal
finish shall be given to the Joint byI
the further application of similal8
mortar to the face of the hubs, so al
to form a continuous and even bey
eled surface from the exterior o8
the hub to the exterior OF the spigo
all around. AS soon as the cement o Il
any joint has been compacted, the
bell hole under the hub must N,
carefully end compactly filled witt
sand or fine earth so as to hold the
exterior mortar finish of said Joints
securely in place The rehllinY
shall then be carried half way M.
the sides Of the entire length of pipg
with selected earth and compacteC
with proper tamping tool. While
the pipe is being laid in each sec
ton between manholes or other per-
| manent openings, light from the re-
mote end of the section shall remain
, constantly in view.
Section %. The sewer french
shall be carefully filed, rammed and
tamped in uniform layers of suitable
earth or other suitable materials Of
not exceeding twelve (12D inches hi
thickness; and III doing the back all
Ing core must be taken to fill in and
| compact the earth around the body oil
the sewer pipe before beginning witt,
the twelve (l2) inch layers, which
are to be rammed and tamped, in tho
doing OF which neither the seweS
Inipe nor the line OF the sewer mus
be in anywise injured or disturbed
and the street surface above the sew
er shall be made firm and solid and
altogether suitable to receive street
paving
Section 90. The work shall bi
carried on and fully completed hi
sections of not exceeding two hun!
dred t200) feet at a time and thu
back illing must be finished coma
plete up to within one hundred (100I
feet of the completed pipe laying
and if any part or section is left uni
completed. II shall be carefully and
fully protected by proper barriers
ard at night time also by suitabld
| red lights
Manholes.
Section "a. Two t2D new mani
holes shall be constructed in said
Sixth street, in the line of the sewer
herein provided for, and one of said
| manholes shall be located at point
two hundred and twelve (212) feet
west Of the west line of Commercial
avenue and one of said manholeg
shall DE located at a point six (6l
feet east of the east line of Washing
ton avenue, Both of said manholes
| shall be built to the grade of said
Sixth street, as now established By
ordinance of said city of Cairo or
| file and of record in the office of tho
city clerk Of said city OF Cairo, and
| the bottoms thereof snail be on d
level with the bottom of the sewer
inside. Both OF the said manholes
shall be constructed as follows: The
walls of the same shall consist of twd
GA courses of hard burned bricH
laid fiat and in cement mortar, com
posed OF one % part of Portland
cement and three f3) parts of clea,
sand. They shall be cylindrical III
shape and shall have an inside diam
Letter Of four ca feet at the bottom
land Of two t2) feet at the top, and
1shall be built on foundations of twd
| GU courses Of hard burned seweI
brick, laid In the same kind of NOR
tar, and the bottoms and insidd
walls shall be plastered with thd
lsame kind Of mortar and to thd
| thickness Of at least one-half " D
/ an inch, In the bottoms Of the mani
4 holes shall be suitable flow chan
Inels, troweled smooth, ana conform
ling accurately to the grade aud Girl
Gle of the sewer pipe; and in each
of them there shall be placed three
Iquarter. t&) inch wrought iron
steps firmly embedded In the WALL
thereof, and spaced twelve (l21
Inches center to center. They shall
! be provided with cast-iron rings AMI
4 perforated covers or lids of not lesa
ithan three hundred and fifty (3501
pounds combined weight each Tho
lheighth Of the said manholes shall BID
such that the tops OF the iron covert