The Telegraph-courier. [volume] (Kenosha, Wis.) 1888-1946, 1911-08-24
EXPLAINS CAUSE OF EXTRAS
Bed Of Greek is Such in Some Places
That it is Deemed Necessary to Put
in an Added Amount of Concrete to
Get Good Bottoa

given out his third report of the pro-
gress of the work on the trunk sewer
and it shows that the work is going
forward, u but not as rapidly as in the
former days. The engineer takes up
some little discussion Of the problem
of s extras = on the sewer and his re-
port will be Of interest to all people
interested in the completion of the
work. Pie report follows:
fSince the time of making my last
report, the work on the trunk sewer
has been progressing in very salts
factory manner, with the exception of
a little trouble, recently encountered
on the west end of the construction.
Up to date there has been completed,
sixteen hundred feet Of 90 inch sewer
and five hundred and ffty-four feet
Of rs inch sewer, on the west side.
The rs inch sewer running between
the two shafts OH Quinton and Lyman
has been completed, and is now con-
nected. This part Of the sewer was
started at the same time, from both
Quinton and Lyman avenue, and where
the two tunnels met, we found that
our grade was exactly right, and the
sewers connected without having to
change either line or grade.
Owing to, the fact that the contrac-
tors are working both day and night
on this part of the sewer. / found it
necessary to employ another inspector.
In one place on this part of the
sewer, we discovered that the sewer
wall was only five and three-fourths
incnes thick, which I promptly order
ed taken out and replaced with the
required thickness, which is eight
inches.
Two new shafts are now being sunk,
one on Fleet street, ard one on How
land avenue, and from these shafts,
tunnels will be put in to accommodate
ly and westerly directions.
On the east end Of the sewer, we
have encountered q very bad bottom,
between Exchange and Chicago streets
which necessitated the allowance of
extra concrete.
At the time of writing this report,
however, the bottom seems to get bet
ter and harder, and although the CON
tractors now are digging daily, a ditch
sixty feet i'll length and the same
amount of concrete being put in. | be-
lieve that when we get out Of the way
from the bed of the creek, they will be
able to increase this amount to eighty
or ninety feet The matter of allowing
extras on the sewer is a proposition,
which if not thoroughly understood,
will easily be subjected to criticism.
The spherical construction Of the
sewer necessitates soil more1firm and
hard, than would a sewer, whose bot
tom is at right angles to it's vertical
axis, and in preparing the specifications
this situation, has been taken care of
and left subject to discretion of the
city engineer.
In some places, especially in the bed
Of Jerome Creek, it has been necessary
not only to put in a square concrete
foundation, but also to lay a plank
bottom.
The total weight Of the SO inch sew
er flied with water, and with an aver
age height Of six feet of dirt on the
top Of same, is 1925 pounds per
lineal foot
There are several classes of strata
that are readily defnable, as ledge
rock hard pan, gravel, clean sand, dry
clay, wet clay, and loan, and when
these strata are Of considerable thick
ness and uniform they may be loaded
according to their respective kind.
Authorities on this subject have pre-
pared after carefully made tests,
scale of various loads, in tons, which
may be applied per square foot of soil.
From this scale, the nature of soil and
the total load of the sewer, it is very
easy to determine, whether extras
should 90 in or not. There is no doubt
at all, but what the sewer can be built
without any extras of any kind, should
the council see fit, but in that case I
would want to be held free from blame
should anything happen.
Oh the other hand, if left to me I
will see that we get a sewer that is
absolutely safe and secure and win
not permit yard of concrete or a
plank as extras unless it is needed.
The work OIL the outlet is progress
ing rapidly and the Golfer dam which
has been put in By the contractors, so
as to allow them to put in their con
crete foundation for the sewer outlet
is nearly completed
Our test shows that the cement
which the contractors are using on
both ends of the job, continues to be of
\ very good quality and in every re-