The record-union., 1894-09-19

tar. The smooth surface and small area
I being the features of the separate system,
and the large diameter affording accom-
mediation for surface drainage. small
drain pipe is shown at the bottom, or
rather below the large sewers. They are
intended to drain the trenches, but no
further notice is taken of these pipes that
we have observed where they are TO drain
/ what water may precolate into them. The
circular or oval form of sewer does not
com bine strength in our judgment. When
set IN victor yieldy ground 1t should have
case when a small drain pipe is placed
below it, with no visible outlet; which
Will tend to disturb the foundation upon
which the sewer should rest. MIR. Bassett
has outlined an elaborate system of flush
tanks In connection with his system, and
seeks to overcome many of the engineer
| ing errors and defects where large brick
sewers of extraordinary large size
are connected with verified pipes,
with much less than halftheir carrying ca
paclty. by liberal use of water supplied
10 large size automatic fiushers; especially
is this SO with the sewers on Fifth. Sew
enth and Ninth. 1t is recommended that
large size fiushers be placed at the upper
end of the brick portions and the Sew
enteenth street sewer to be flushed by
placing large flush tank at Seventeenth
and y and Seventeenth and j streets, and
the one on \ street by placing a tank at
Twenty-secoud and n. Iu addition to
the above, flushing tanks are provided at
the end OF each small sewer III the alley
ways, using l50 gallons once or twice a
day. 1t Is question if our present water
supply can stand such a drain as pro-
posed to furnish an adequate supply of
water as outlined by this system, and il
our mouse drainage supplemented by
such an amount of water will be found to
answer the purpose intended over such
hat grades as prevail in our city. The
cost of these tanks is about $4,000, to
which will have TO be added the addi-
tlonal cost OF tapping the city water
mains and conducting and connecting the
water pipes to the tlushers, etc.
No recommendations have been made
OF definite nature for pumping slpage
or drainage water from the low living pOr-
ton of the city known as Sewage Lake.
Two locations are designated as suit
able for the pumping station, Sixth and w
ana Eighth and \. No pumping plant is
designated or suggestion offered as to
head works. The cost of buildings and
tank is small, 81, 800.
The plans OF MIR. Bassett are very clear
and comprehensive, are carefully worked
out. The grades for the sewers are very
extensively arranged, and are all placed
at safe distance below the street grade
throughout the city.
The cost Of the system as outlined is
placed at Sl50,64S 80.
f. T. NEwBERY's PLAN.
We entered with some hesitation upon
the examination Of the plans presented
by Mr.. New berry. knowing that they had
been passed upon by able and competent
engineers in this and other cities, and
submitted for public inspection and criti-
cism to the daily press.
AS citizens having the material prou-
ress and Improvement of the city i'll view
we will say that the plans submitted and
features presented have received careful
and impartial examination at our hands
We have ayailed ourselves of every
source OF information bearing directly
and remotely upon the features em-
bodied in the plan, and after very mature
consideration and careful study and in
spection of the proposed system as set
forth beg leave to report as follows:
The plans of Mr.. New berry, unlike the
others. are for sewage system for the
entire city, including the removal of
storm water, surface drainage and sipape
from the river. AS set forth in the plans
and specifications, the aims of the system
are more comprehensive in their scoDe
and tar-reaching than any that have come
under our consideration. A system OF
subsoil drainage collects all the present
sewage percolation, sipage and storm
water which now finds natural reservoir
in sewage lake in the southwestern por-
ton OF the city, utiliZes it for a flushiny
system and renders habitabe a portion
OF the city which has always been a mem
ace TO public health and no end OF COM
plant TO the city and county authorities
The more these plans and specfica-
tions are studied with a view to applying
| them 10 the purposes intended aud the
ends sought to be attained they seem to
meet all the requirements of our local
conditions, which are unusually comph--
Gated.
By careful study of the blue prints
furnished by the City Engineer street
presents the best natural advantages for
the location OF a main intercepter. So
much so is this fact that Mr.. Camp
bell adopts IL for his main, and Mr. Mil
Ter, believer of sewers in the alleys,
adopts the alley, r and 5, for the location
| of his large sewer.
The principal requirements of our
present sewage system are outlets of such
construction that they will facilitate in
stead of retarding the flow in the mains
and the reconstruction of the immense
brick sewers on Ninth and Seventeenth
streets, which are little less than cess
pools, 400 and l,200 feet long, in their
relative position TO the other sewers
Sewers with only fall OF one foot in
eleven blocks, others with fall Off g. in
half block, are radical defects which
require careful consideration. Also a
|
present main intercepter are certainly
errors in any system. We find these
points have had every defect remedled in
the plans under consideration, and are the
only set which have taken any steps to
the permanent correction of such defects
A feature of these plans is the thorough
manner contemplated for the carrying
out OF these works. The connections in
the main lntercepter are set in for each
street, or where no sewer has been built
at the time OF its construction, properly
capped and protected, of such sizes as
Will insure adequate capacity for the un-
| drained portions OF the city. Mud
sluices are also inserted midway between
each street and are in continual operation.
The chief feature of this plan is the
main intercepter, four feet in diameter
reaching from Sixth to Twenty fifth
street, the elevation at Twenty fifth street
being little above the bed of the river SO as
to command the whole of the drainage by
gravitation In the eastern portion of the
city, no other lntercepter being required
This sewer is built of steel plate, sur
rounded with nine inches of concrete
resting on bread flat base of the same
material, and presenting a smooth uni
form surface, reducing friction 10 MINI
mum. This sewer conveys the whole of
the sewage and storm water of the city 10
a pump station. Complete plans and de-
tails OF the pumping station, head works,
electors, sumpS, coal bins, chutes and
railroad tracks are presented, leaving no
part to conjecture or guess work
From the station to the river the sew
age is carried in two lines of three-six-
teenth-inch steel pipes, three feet in diam-
eter, built and constructed, like the main
intercepter, with concrete.
The head works are designed in con-
crete, by which the levee is restored to
more than its original strength.
Means are also provided for the drain.