The Yakima herald. [volume] (North Yakima, W.T. [Wash.]) 1889-1914, 1904-11-30

systems are built. put in six-irch tile
drain under the sewer in the entire
trunk system. There will of necessity
be two of these X-inch drains in the
trench under that portion of the sewer
on the alley north of Yakima avenue
extending across the track and back of
the laterals and the local sewers il will
generally be necessary to put in one
drain, either a four-inch or siX-incG. as
the need appears at the time. OF course
drainage will only be complete and per
feet when all the laterals are bull. At
the present time great portion Ct the
district south of Yakima avenue az
parently does not need so much drain
age as other parts of the city, as the
land runs higher from the water plane,
and the water consequently is deeper.
Drains will be provided as large rs
necessary. but their cost will not ne So
great as in other parts of the system,
pdi OH lHe HoIlil Slue.
THE criticism is offered. or at least
it has been suggested, that six-inch tile
drains seem small for the work required
of them This would be true if these
drains were compelled to do all the work
of drainage; but they will connect with
the main sewers at intervals and where
built under lateral sewers will empty
into the main sewer and not into the
sub drain. This, it will be seen at
glance, will relieve the pressure on the
drains. 1t is also much more economic
than constructing second system to
handle all the drainage"
'How about the lasting qualities of
the wood pipe outlets spoken of in the
plans and specifications was askel.
at has been demonstrated" Mr.. Me
Culloh replied that the life of wood
pipe used in this manner is greater than
that of either steel or cast iron. There
is every reason to believe that they
will be there and capable of doing salts
factory service as long as the remain
der of the system. They have been in
constant use in the city of Wnatcom for
fifteen years, and are as sound as the
day they were put in.
''In discussing the sewer proposition,
| have been asked about what seems to
be a peculiar thing, but which is plainly
understood by anyone familiar with this
branch of civil engineering. At the end
of Yakima avenue the twenty one-inch
sewer drain tile) will empty into an
eighteen-inch wood pipe. 1t would
seem that the difference in sizes was too
great to allow satisfactory service. hut
as matter of fact, wood pipe
will carry about thirty per cent more
drainage than a terra Gotta pipe of the
same dimensions laid in the same posi-
ton. In addition there is also the fact
that the wood-stave will run full and
under pressure, while terra Gotta pipe
is never designed to run full
"The route indicated on the map was
, selected because it was the most eco
nomical and best adapted to the gen
eral trunk system, and also because it
will be cheaper to make the two out
falls, one at Yakima avenue and the
other at Beach street instead of having
one outfall on Race street, as was con-
templated in the plan of the system
considered last spring. The trunk sys-
tenn is direct outlet for the drainage
for that part of the city in which the
need of drainage is the most apparent"
From the above it is plain that if the
! proposed sewer is built the city will