The Cairo bulletin. (Cairo, Ill.) 1???-1928, 1908-08-19


trench. must be done by srrapin4
away or filling in with earth and com
pacing the same under the body OF
the pipe and not by blocking o.
weighing IN. Before laying the intc.i
or Of the bell shall be carefully wiped
smooth and clean and the annulal
/ space shall be free from dirt or NOR
tar. A narrow gasket CT packing shat
/ be properly calked into each joint az
ter which Portland cement mortar
composed Of one % part tf &C
ment and one 01 part cf clraH
sand shall be introduced therein, an
such gasket shall be of one piece O
sufficient length 10 reach entirely
around the pipe and Of sutf.cien
/ thickness TO bring the bottoms of the
/ two pipes TO the same level. NJ
joint shall be cemente1 until the gas
/ ket of the next two joints in adyanc,
are properly inserted Special care
must be taken to NH with mortar the
annular SPACE at the bottoms AMI
sides as we'll as at the tops Of the
/ joints. After such space has been
filled. the cement having been com
'pacted with a wooden or iron calkme
tool, neat finish shall be given 10 the
joint by the further application Of
similar mortar to the face of the hubs.
even heyeled surface from the extern
or cf the hub to the exterior of the
spigot all around As soon as the CO.
lment of any joint has been compacte3
the bell hole under the hub must be
carefully and compactly filled with
sand OF fine earth so as 10 hold the OK
terror mortar finish Of said joints Sc
curely in its place. The re-flling shall
then be carried half way up the sides
of the entire length of pipe with Sc
lected earth and compacted with a
proper tamping tool While the pipe
is being laid in each section between
manholes or other permanent open
ings light from the remote end of the
section shall remain constantly in
view
Section l. On both sides Of the sew
err and as near the center line of each
lot or parcel Of land of the width OF
twenty-five (25l feet. there shall be Y
branches. of six 90 inches diameter.
laid or turned to an angle Of forty-hye
ti5l degrees TO receive the six Co
inch house connections hereinafter
provided for, and said house conuec
tions shall be securely closed at the
lot line with an eartheuWare cap sci
in cement mortar except where the LOT
owner or proprietor desires to connect
his house or drain pipes herewith at
once The exact location Of all y
branches shall be carefully ascertained
by the city engineer of the city or some
other competent person. designated or
appointed by the city council, before
the concealment Of the said branches
by back filling, by accurate measure
ment from the center of the manhole
next below in the same line Of pipe, Sc
that true and exact record may b
preserved for future use; and no Y
bralch shall be covered or concealed
before its exact location has been
noted and recorded.
Section ). The sewer trench shah |
be carefully filed rammed and tamp |
ed in uniform layers of suitable earth |
or other suitable materials of not OK.
ceeding twelve (12) inches in thick
ness; and in doing the back
filling care must be taken tc
fill in and compact the earth
around the body OF the sewer pipe be
fore beginning with the twelve n2l /
inch layers which are to be rammpl
and tamped in the doing Of which
neither the sewer pipe nor the line ~
the sewer must be in anywise injured
Or disturbed and the street surface
above the sewer shall be made firm
and solid and altogether suitable to
'eceiye street paving whenever the
same shall be ordered.
Section 6. The work shall be car
led on and fully completed in sec
ions of not exceeding two hundred
20o) feet at time and the back filing
must be finished complete up to with
n one hundred Noo) feet of the com.
leted pipe laying; and if any part or
ection is left uncompleted it shall be
arefuIly and fully protected by prop. ,
r barriers and at night time also by
uitable red lights.
Manholes
Section I In the said sewer con
truction work there shall be cylu. i
rical brick manholes all alike one at
ach street intersection and one in the h
enter Of each block and one at t
ach end Of the said sewer. All Is
T said manholes shall be built to :
he grade of the said street. and the I
cttom thereof shall be on a level with o
ne bottom Of the sewer inside All Of
ED manholes shall be constructed as Q
FLOWS: The walls of the same shall $
onsist of two (2D courses of hard n
lrned brick laid fat and in cement 7
ortar composed of one u part or 81
ortland cement and three 90 parts 81
clean sand. They shall be of four W
- feet diameter at the bottom ri
ID decrease or taper to two ~ feet in
ameter at the top and be built on e,