The twice-a-week Twin Falls times. (Twin Falls, Idaho) 1916-1918, 1917-12-04

sand which forms a part of the fill
tering medium. The water after pass
ing through approximately 30 inches
of sand of a specified fineness ans
uniformity OF size, enters the sup
porting gravel which forms part OF
the undertakings system. The fill
tered water is then collected by a sys-
| tenn of strainers and manifold piping
and flows into the filtered water res
ervoir The filter units will be equip
ped with automatically operated valves
controlling all parts of the filter op-
Grafton AID washing process The
valves will all be controlled from q
central operating table for each unit
Mounted on this table or on suitable
stand nearby will be lOss-of-heao
gauges and recording devices showing
when the filter should be washed ana
indicating the head OF water in the
clear we'll. The effluent from each
filter will pass through a rate con
troller which controls the amount OF
water passing through each unit.
An automatic liquid chlorine apart
tus actuated by the Ventura Meter will
deliver a certain amount OF chlorine
gas to the filtered water as il enters
the clear we'll or supply pipe line
to the city.
The clear water well will extend
under the filter basin and operating
gallery.
The operating floor and sufficient
portion of the filters to allow operator
to see the filter operation, is covered
with a one story brick building. %
: feet by Sc feet inside dimension. Be
2 tween the filters and settling basin is
the control house. a two story brick
structure with concrete basement The
p approximate inside dimensions being
- 35 feet by AZ feet by 43 feet The
y top floor will be used for chemical
y storage The second floor for valve
y stands and control apparatus and Of
u flee The basement will contain coal
u bin. heating plant. Ventura Meter and
~ wash water pump
o Supply Line
IS The supply line to the city distri-
IS button system will be of Redwood pipe
% "a inches in diameter. THe profile
70 and general characteristics Of this
10 limo is shown on accompanying pro-
10 file This line will deliver six million
10 gallons Of water with a loss Of 13 feet
10 head, or about IL pounds pressure
20 or with the distribution system plan
80 ned will deliver this amount at a pres
IS sure of 65 to 20 pounds at Main ans
30 Shoshone. other rates with corre-
80 spending hydraulic grades or friction
25 lines will be carried across Rock
81 creek The main line will be 30-inch
n cast iron line lead down in the canyon
m and the other a 10-inch wood line
Ok carried on the steel trestle now sup
M porting the old 16-inch line.
w Distribution System
The main feed line will be from the
of 2O-inch line on Third street west Lat
Is eral distributing lines branch off and
-,f,s fr--r inc
c. on Sixth street west and north and on
10 Fourth streets south and east. All
Id lines through the main part of the
Ii city which is now paved or will be
el paved in the near future, should be
er laid with cast iron pipe New lines
ed have been planned in the alleys IN
n the district where there is now paving
mt but elsewhere the lines are laid II
of the streets. Practically all the lines
us between the railroad and Seventh ave
to me north and east and between Sixth
h street north and west, and Fourth
to street south and east should be cast
lie iron: also the lines on Main avenue
mt and crossing Shoshone street and the
line on Eighth avenue north and eas'
tie where paving has been proposed.
N In the new system no 4-inch pipe
of lines are used for runs over three
,e- blocks long and these are tied in al
is both ends with cross feeders. Ih'
,ix whole system is so designed as to hav'
III a uniform pressure over the whole CIT,
10 with adequate fire protection at al
pc points.
ng Gate valves have been so placed tina
be with a few exceptions not over toul
re- blocks of a line need be out of ser
ct vice at a time for repairs.
ito 1t is planned to install SO new fir'
ed hydrants and with such spacing tina
no house will be over 400 feet from
six a fire hydrant. Twenty-three Of tn
ga present hydrants will be moved to new
In locations and 81 will have new con
vel nections to the new mains. All Of tn
he new hydrants will have steamer con
INT nections with cut off gate valves oil
he the hydrant branch. 1t is here rec
in, commended also that the city SHOULD
his install some special hydrants for tn
nd use of the street sprinkling wagon
he and flushers.