Clarksville weekly chronicle. (Clarksville, Tenn.) 1873-1890, 1879-08-09

Clarksville. We are no alarmist
we want to produce no yellow fever
panic here. Likely enough it will
not be yellow fever that viii result;
typhoid fever, diphtheria and a
number of other diseases flourish
equally with yellow fever in local
ity where earth, air and water are
contaminated with sewage.
We shall be much misunderstood
if we are taken as making an attack
on Mr.. Lehman in these remarks :;
on the contrary, we consider him as
suffering a great hardship. He has
been induced to put up expensive
fixtures in his house to supply his
boarders and guests with the coma
forts and luxuries of modern civili-
zation, and then, as soon as he puts
them in permanent operation, he is
told that he must not use them, be-
cause he viii poison his neighbors
II HG dOOo. CuO li1o 1iliOSf1lP - t1AC
inevitable result of constructing
water-works without providing for
sewerage. 1t is for the permanent
relief of persons in his position that
these papers are written.
We now resume the mechanism
of sewerage where we left it in last
Saturdays paper, the transition,
namely, from the private to the
public sewerage. We will suppose
the drain-pipe which conveys the
collective sewerage from single lot
to have been brought to its point of
communication with the public
sewerage in the drain which carries
the collective surface and subsoil
drainage to the same point, the two
systems running together but not
communicating, the sewage appa-
ratus within the drainage apparatus.
The public portion is constructed
on the same principle in its smaller
notifications, 1. e., sewer inside of
drain, until we arrive at the final
trunk sewer, where the sewer and
drain can be one. To illustrate,
suppose one of the houses, now so
often mentioned, on the north side
of Franklin to be the point at which
we commence describing the public
portion of the sewerage. The pri-
vate sewer pipe in its drain COM
municates sewer with sewer and
drain with drain at a point not less
than three feet below the surface.
Near the termination of the private
portion a trap, or water-valve appa-
ratus, not now to be described, is
placed to prevent the reorganization
of sewer gas backwards into the
house. The private drain of course
communicates with q larger public
drain, and the private sewer pipein
it with a larger sewer pipe in the
public drain running on one side OF
Franklin down to First. Here it is
/ possible that it would meet another
drain and sewer coming from the
lower part of Franklin, though it is
more likely that that portion of the
street would have its drainage run
ming westward towards the river.
/ If it does meet another stream, OF
course the calibre of both drain and
sewer is increased as it goes down
! First street. AT the corner of Com
merce it would meet the great trunk
drain from the region of the ponds,
and, as this is one of the main drain
age trunks, here at last the sewage
and drainage could be discharged
into the same great drain, which
would communicate with another
great drain at right angles to its
course. This latter is the great
transverse drain running parallel tC
the river, and should run probably
on Spring street and below it) so as
to be. above high water by as
little an elevation as possible. Fl
nally, somewhere in the lower part
of town, or rather below town alto
gether, this transverse sewer should
communicate with the great sI4iQf
which constitutes its main outlet tC
the river.
Now, this whole public portion OF
the sewerage must beso constructed
as to fulfil three requirements:
First-Its stream must be rapid
SecOnd-It must be waterproof
Third-It must be ventilated.
1. The stream nl1lst be rapid
ClarksYill is happily situated in this
respect, its natural confguratior
being very favorable to rapid drain
age; we will only give the inclina
tions which experience has estab
| lished for sewers of different calibrC
so as to secure the required velocity
of q feet per second: