Elmore County Republican. [volume] (Mountain Home, Idaho) 1910-1915, 1911-02-11

charge itself through this syphon in
to the Slough. This is i'm accordance
with the best practice and prevents
the accumulation of s1udge which
would occur if the outlet end were
left free.
When the system is constructed
it may be found advisable to install
one or more flush tanks at the upper
ends of some of the collecting sew
ers SO that large volume of clear
water can be admitted for purposes
Of cleaning, though the grades in this
case are such that very few if any
flush tanks may be required Flush
ing can be done very satisfao N lily
in many cases by blocking the out
let from a man4hole, FILLING the mani
hole itself with the desired quantity
of water and then removing the block.
The following is quoted from re-
cent report by a we'll known sewer
age engineer on system for a town
comparable to Mountain Home:
Formerly it was considered nee
essary to provide large sewers capa-
bic OF carrying to the nearest water
courses, or to some final point of out
fail, not only domestic and manufac-
turing wastes, but surface water from
streets, doOryards, the roofs of build
ings and even large areas of level
land upon which stagnant waters
might accumulate. Now it is the O.
plnion held in common by sanitary
and engineering authorities that do
nestle and manufacturing wastes can
best be removed and disposed of by
system of accurately laid. smooth,
self-cleaning pipes, designed to carry
such wastes only.
The modern and proven system of
sewerage for town consists Of first
point Of outfall where the sewage
collected can be disposed of without
creating nuisance to the residents
in the vicinity or interests adjacent
thereto; secOnd,-Of a main outfall
third ,-sub-main sewers which, start
ing from the main sewer, ascend
the minor valley lines of the terri
tory to be drained; fourth. the lat
eral or small sewers which are laid
from the higher points of the streets
severed, down to the sub-main sew
ers, and collect house drainage and
manufacturing wastes.
In man respects a sewerage sys-
tenn resembles the venous circulation
In the haman body, the flow always
being from the remote points of the
system through constantly enlarging
pipes to the main vein or principal
sewer of the entire system, and al
ways in the same direction. All the
sewers, large and small in a properly
designed system are laid with such
rates of inclination as will insure a
rapid and uninterrupted flow of the
sewage from their upper ends to the
final point of disposal or outfall III
the territory drained is very flat, pro-
vision Is made for the occasional
flushing of the sewers by suddenly
iischarging a large quantity of clean
water through them. If the interior
Of the sewer DIS kept clean. noxious
gases win not be generated and the
discharge at the outfall will be near
y in-offensive."
Aside from having the collecting.
ntercepting and outfall sewer lines
aid absolutely to grade, the pipe
oints being packed with oakum or
ute and then filled with Portland !,
cement mortar, the most important |
eature Of the actual const rrDction of
he system Is the alignment and
trade OF the house connections. The
ormer practice was to use "Y"