The Cairo bulletin. (Cairo, Ill.) 1???-1928, 1910-04-18

40 tHe WORK 10 the pest advantage
both as to the matter of securing q
proper foundation and for laying III,
pipe, the bottoms OF the trenches
shall be made at least one III foot
wider than the external diameter OF
the sewer pipe, and wider if found
necessary or best, and they shall be
curved or shaped to the form and size
of the lower half of the sewer pipe q
be laid thereon, so that the hubs oil
bells as well as the body Of the pipe
may be carefully embedded and have
an even bearing on the bottom of the
trenches.
| Whenever the ground, at the bot.
tom of the sewer trench shall not he
found to be sufficiently firm or solid
for the laying of the sewer pipe, the
same shall be put in proper and suit
able condition by the contractor by
the use of such materials as will
make safe and permanent founda-
ton for the work.
i Section Fl. The sewer pipe, house
connection pipe and inlet pipe shall
tbe of the best grade and quality Of
/ vitrified tile sewer pipe, salt glazeu
and free from cracks, flaws. blisters,
Jumps or other defects or blemishes,
and shall be of the hub and spigot
|pattern Both the body and the he'll
shall be OF double strength and have
a thickness of not less than one
/ twelfth 112) OF the internal diane.
tier Of the pipe, and the joint counec-
Itions OF the pipe shall be fitted tight
and close and laid in the best quality
of Portland cement mortar. com
posed OF one "a part of cement and
one ca part OF clean sand with only
enough water to give consistency IT.
ithe mortar, which shall be used as
soon as made, and before lowering
the joints or pieces Of pipe into
the trenches, they shall he care
fully examined and inspected and
those not meeting the foregoing
requirements shall be rejected and re-
moved from the work. The pipes
shall be so laid in the trenches that
! after the sewer Is completed, the inte-
rior surface thereof shall conform ae-
curately to the grade herein given for
| the laying of the sewer ana all adj
justments to the line and grade OF pipe,
ilaii directly upon the bottom Of TIE
trench must be done by scraping
away or filling in with earth and CON-
pacing the same under the body
of the pipe and not by blocking or
wedging up, Before laying, the inte-
rior Of the bell shall be carefully
wiped smooth and clean and
the annular space shall be free
from dirt or mortar A mar
row ga:ket Of packing shall be proper
ly calked into each Joint aftes which
Portland cement mortar, composed of
one on part Of cement and one ~
part Of clean sand, shall be introduced
therein. and srch gsstet Sail be OF
one piece of sufficient length to. reach
entirely around the ripe and of suff'
elent thickness to bring the bottoms
Of the two pipes to tho Fame level
No Joint she'll be cemented until the
gas}ct e Tho reyt two joins in ad'
vance ar" Gr~ -riy ."s~rte,l. special
care mrgt be ta'.or 70 ri WITH ortar
tNo anr-lar space at the Bottoms and
sides as we'll as ct the tons OF the
joints. After such space has been
filled. the cement having been com.
pacted with a wooden or iron calking
tool, neat finish shall be given to the
joint by the further application OF
similar mortar to the face Of the hubs,
so as to form a continuous and even
beveled surface from the exterior OF
the hub to the exterior Of the spigot
all around. As soon as the cement OF
any JOINT has been compacted, the
bell hole under the hub must be care
fully and compactly filled with sand
or fine earth so as to hold the exc
rior mortar finish Of said Joints So
curelv in It's place. The refilling shall
then be carried half way MP the siAes
Of the entire length Of pipe witch
selected earth AMI compacted with a
proper tamming tool While the pipe
is being laid In each section between
manhoIos or other permanent open
ines. light from the remote end OF lnc
section shall remain constantly in
view.
Section 90. On both sides Of the
sewer and as near the ceptNr line Of
each lot or parcc Of land Of the width
or twenty-five (25) feet as poss be,
there shall he Y branches. of six 20
inches diameter. laid or turned to an
angle of forty.fivc (45) DEGREES to re-
ceive the Xix t6) inch bouso connec.
lions hereinafter provided for; and
said house connections shall be Sc
curely closed ten 10) f"ct from
the lor line with an earth-i
enware cap set in cement NOR
tar excey where the lot OVER Or
desires to connect MS
house or drain pipes Herewith at
once. The exact location Of all
branches shall be carefully acertain'
ed by the city engineer of the city Or