The Cairo bulletin., 1907-09-20

ing at the said depth Of SOS feet b
I. low the said grade, the said sewc
Il with diameter OF eighteen as
Y inches, shall rise at the rate OF |
7 hundrcdths Of foot, III 100 feet, {
: the nlanhole In the Thirtysccon
y street sewer, where lis depth belo'
! The grade at that point shall be. So
= feet
Section 3 The sewer trenche
Z lshall be carefully and evenly eXcs
waited and with such slants or inclina
!, tions in the sides thereof as will lcay'
nc risk Of caying or falling in an,
where such risk cannot otherwise b.
: avoided, proper snoring must be re
sorted to. To enable the workmen 4,
= do the work TO the best advantage
both as TO the matter OF securing
F, proper foundation and for laying th'
pipe, the bottoms Of the trenches shat
be made at least one "a foot widen
than the external diameter OF thC
sewer pipe and wider If found neces
sary or best; and they shall be curved
Tor shaped to the form and size Of the
lower half of the sewer pipe to he laid
thereon, SO that the hubs or bells as
wei ab the body of the pipe may be
carefully embedded ami have an even
bearing on the bottom of the trenches
Whenever the ground, at the bot
tom &C the sewer trench, shall not be
fopnd 10 be sufficiently firm or solid
"a, The laying Of the sewer pipe, the
same shall be put in proper and suit
able condition hy the contractor by
the use of such materials as win
make safe and permanent founda
ton for the work
Section 4 The sewer pipe house
connection pipe and inlet pipe
he OF the best grade ana quality Of
vitritied tile sewer pipe, salt glazed.
end free from cracks. flaws. blisters,
humps or other defects or blemishes,
and shall be- Of the hub aud spigot pat |
tern. Both the body and the bell sbal 4
NJ of double strength and have 4
thickness If not less than one-twcMi |
tl-121 Of the internal diameter ~ h \
pipe aud the Joint connections Of the 4
pipe shall he fitted tight and close
mid laid ia the best quality OF Port I
land cement mortar, composed Of one
ca ratt of cement aud one IN part
II clean sand with only enough water
ID give consistency 10 the mortar.
which shall he used as soon as made. II
ind before lowering the joints or
Iieces Of pipe into The trenches they
shall he carefully examined aud in-
ipected and those not meeting the
requirements shall be re
ected and removed from the work
The pipes shall be so laid in the \
renches that after the sewer is com Ii
lleted the interior surface thereof ,
hall conform accurately to the grade !
lerein given for the laying of the ,
ever. and all adjustments to line aud h
rade Of pipe laid directly upon thu |
'ottom OF the trench. must be done ,
y seraping sway or filling In with Z
arth and eompacting the same under !
he body of the pipe and not by block !
q
siped smooth and clean and the an )
nlar space shall be free from dirt or
iortar. A marrow gasket of packing !.
hall be properly ealked into each ;,
1int after which Portland cemcn +
lortar. composed of one a. part of !,
ement aud one tD part of clean
and shall be introduced therein an, 4,
rch gasket shall be of one piece of Z
efficient length to reach entirely I.
round the pipe and of sufficient !,
iickness TO bring the bottoms Of the =,
70 pines to the same level. No Join !,
all be cemented until the gasket
Re next two joints in advance J,
'operly inserted Special care must :,
: taken 10 fill with mortar the i
Inular space at the bottoms p i
ies as well az mt the tops of the 4,
iuts. After such space has been "A
led the cement haviny been com
cted with q wooden or iron calk II
2 tool neat finish shall be !.
zen 10 the Joint by the further NJ
plication Of similar mortar to the :"
e Of the hubs, so as To form con Mi
uous and even beveled surface 'front.' ~
exterior Of the hub to the exteri ~ :,
the spigot all around. As soon as
= cement Of any joint has been =
npacted, the bell hole under the ''o
b must be carefully aud com y =
thy allied with sand or fine earth so y
to hold the exterior mortar finish ~
said joints securely in its place o."
2 reflling shall then be carried
I way up the sides of the entire N''
eth Of pine with selected earth cen
compacted with proper tampipg par
While the pipe is being laid in 'ie'
b section between mauholcs or 'ha
er permanent openings. light from 1--WE
feWota end of the section shall ~
lain constantly in plain view me
ection >. ON both sides Of the tom
81 and as near the center line of aha
b lot or parcel 81 land Of the width con
twenty-five 1851 feet. there shall be IN
ranches. Of six 90 inches diam insi
= laid OF turned to an angle OF haii
give Hsl degrees n rrc.ivc the NOR
90 inch house connections herein or
r prasiled for; and said hniise IN"
leciiens shall No. securely closed tran
he lot line with m earthenware twpl
set 10 cement mortar except 90
re tho lot owner or proprietor de iron
3 to connect his house or Drain in Il
3 Herewith NJ orlco Tho e--art iruu