The Cairo bulletin., 1908-08-18

sorted TO- 70 enable the workmen f
do the work to the best advantage
{ both as to the matter of securing
e proper foundation and for laying tn
y pipe the bottoms OF the trenche
2 shall be made AT least one GD foo
wider than The external diameter O
the sewer pipe and wider If found nee
essary or best and they snail b
curved; or shaped 10 the form an
size OF the lower half Of the sewer
Ipipe to be laid thereon, so that tn
hubs or bells as Well as the body o.
! the pipe may be carefully omtadle,
land have an even bearing cn the bot
item of the trenches.
| Whenever the ground AZ the bottom
of the sewer trench, shall not be found
to be sufficiently firm or solid for the
laying of the sewer pipe. the SAM
shall be put in proper and suitable
condition by the contractor by the use
OF such materials as will make a safe
and permanent foundation for the
work.
Section 3, The sewer pipe. house
correction pipe and inlet pipe shat
be Of the best grade and quality of
vitrifed tile sewer pipe. sat glazed
and free from cracks. flaws. blisters.
humps or other defects or blcmishes.
and shall be of the hub and snizot
pattern. Both the body and bell shall
be of double strength and have IA
thickness of not less than Oue,twalfta
1-l2l OF the internal diameter of the
pipe and the joint connections of the
pipe shall be fitted tight and close ana
laid in the best quality Of Portland
cement mortar composed of one "a
part Of cement and one Cd part of
clean sand with only enough water 10
give consistency to the mortar. which
shall be used as soon as made. aul
before lowering the joints or pieces
Of pipe into the trenches. they shall
be carefully examined and inspected
and those not meeting the foregoing
requirements shall be rejected and
removed from the work. The pipes
shall be so laid in the trenches that
after the sewer is completed. the in.
terror surface thereof shall conform
accurately TO the grade herein given
for the laying of the sewer and all /.
adjustments 20 line and grade Of pipe /
laid directly upon the bottom of the
trench, must be done by scrapingI
away or filing In with earth and com /
pacing the same under the body of +
the pipe and not by blocking or
wCGging up Before laying the inteIi I
Or Of the bell shall be carefully wipel
smooth and clean and the annular
space shall be free from dirt or NOR +,
ar. A narrow gasket Of packing shall 4
be properly calked into each joint af
er which Portland cement mortar.
composed of one % part Of &C.
nent and one On part Of clean
and, shall be introduced therein, AM Z
,uch gasket shall be of one piece Of
length to reach entirely
around the pipe and of sufficient
thickness TO bring the bottoms Of the
wo pipes 10 the same level. No
0int shall be cemented until the gas.
ct of the next two joints I'm advance
re properly inserted Special care
aust be taken TO fiji with mortar the
nnular space at the bottoms ami a.,
ides as well as at the tops of the =
}ints. After such space has been g
He'd. the cement having been com. II
acted with a wooden or iron calking +
pol. a neat finish shall be given 10 the . f
Jint by the further application If O
milar mortar To the face Of the hubs. s
as TO form continuous and O
ven beveled surface from the exteri-, #
r of the hub 10 the exterior of the o
1igot all around As soon as the c. a
.ent Of any joint has been compacteA. s.
le bell hole under the hub must be n
srefuliy ami compactly filled with a
md or fine earth so as 10 hold the ny- o
.rior mortar finish Of said joints So il
rely in its place. The re-flline shall
zen be carried half way mp the sides
the entire length OF pipe with So II
cited earth and compacted with a u
-oper tamping tool While the pipe "I
being laid I'm each section between -
anholes or other permanent oper- -
gs. light from the remote end Of the -
ction shall remain constantly in ~
CIV.
Section { On both sides Of the sew -
and as near the center line of each -
OF parcel Of land Of the width of :.
.enty-fye f25b feet. there shall be Y J
anches. Of six 90 inches diameter. Fl.
n or turuei 70 an angle Of forty-fve en-.
- degrees 10 receive the six fGt tg.t
IN house connections hereinafter s.
ovidel for; and said house connee- nc
ms shall be securely closed a. the -h
line with an ear,hc1vare cap set ca
cement mortar except whore the lot IN
.Her OF proprietor desires % come f Sc
. house or drain pipes herewith at M,
CO. The exact location Of all Y on
81ches shall be carefully ascertafred ca
the city engineer Of the city or s, M va
ier competent person. designated or so
pointed bz the city council. before otl
2 concealnient OF the said branches ca
back filling. by accurate measure de