The daily telegram. [volume] (Clarksburg, W. Va.) 1901-1926, 1907-01-11


datlon does not vary materially
between the several sizes, ana the
heighth viii be used which is best
adapted TO the elevation Of the
rock ledge ON the hill side, when
located.
Sufficient time was not allowed
for investigation of sites for earth
reservoirs. and even before such
were recommended. / should want
TO =carefully explore prospective
sites to gnard against the location
of such when subsequent falls OF
the roofs of worked out galleries
IN coal mines. could not be a men
ace to the safety OF the structure.
The construction OF earth res
ervoirs over coal mines in Eastern
Pennsylvania. and elsewhere. has
sometimes been attended with dis
aster. and great caution should DO
exercised In locating such Ia To-
caiities like clarksburg, when sud
den drops of surface OF the earth
may occur. which would temper
arily put out of use II not wholly
ruin such structures. ,ssss,5s I.
The cost OF steel tanks per unit
of storage capacity is much great
er than earth reservoirs, but ac-
cidents which would destroy a res
ervoir might have small effect on
steel tanks.
The total storage contemplated
in the tanks will be ample for any
possible fire call without recourse
to pumping. although pumping
would probably continue during a
period of fire service.
Ten fire streams from one and
one eighth inch ring nozzles under
80 pounds pressure per square
inch. will require about $500 gar
Ions of water per minute or is, 900
gallons per hour. Assuming the
fire service for ten hours. the con-
sumption will be about 1900. 900
gallons, or but little over one-half
the capacity of the three new and
two old steel tanks-ten hours is
abundant time to FIRE boilers, raise
steam pressure, and start the
pumping machinery which of the
capacity figured, can easily main
tain the tanks full during the peri
cd of fire service.
Filtration.
The filtration system should be
adopted to the capacity of the
proposed new water system. The
system of sand filtration will be
preferred. and also such construc-
ton as may be built without the
payment for patents or royalties on
same.
The filtration system proposed is
that of plain sand filters, supple
mented by sedimentation and by
profiltration.
The estimate assumes about two
days of sedimentation on the con-
tinuous plan and pre-hltration for
the removal of the grosser sus-
pended matters.
The filtration works have been
figured on the basis of four and
one-half gallons per day, and the
proportions adopted for the pre-
filters and plain sand filters af-
ter sedimentation of the raw water
for about two days, assume a bac-
terial reduction and reduction of
the suspended matter in the water
Of from 50 to 90 per cent. of the
original numbers.
I can heartily unite with the
committee on the wisdom Of adopt
ing plain sand filtration. because I
believe that from the view point
of public health, 1t is the system
best adapted to the publication of
polluted water, and for steam boil
er purposes, laundry, the bath
ana other uses, 1t furnishes a FL
tered water better than that to be
obtained from filters which rely
upon strong astringents for their
efficiency.
Plain sand filters involve no
proprietary interests. involve only
intelligent construction and man
agement, contain no Intricate
mechanism and when properly in
stalled. can be maintained at their
highest efficiency indefinitely,
The labor of cleaning and renew
ing the pre-filters and plain sand
filters can be obtained readily any
where, and with one intelligent
man in charge of the works. the
quality of the public water supply
can be maintained at standard