Los Angeles herald., 1891-12-30

d. hepdlrS 10 kIreeLS.. lOUOUO
Total ....... 1927 500
Total daily expense for pumping,
$29S.
Fire hydrants put in place are worth
about $50 per piece, water meters about
$50 and pressure regulators about $25
per piece.
After the system has been thoroughly
equipped with these fixtures, and the
price for land and the incidentals having
been added, it will be readily seen that
the cost of the works will not fall short
OF 81 100000.
An outlay of 81, 500, 900. with daily
expenditure Of about $155 for pumping,
will satisfy all present wants. While it
may appear that the system outlined
above is rather expensive in the first in
stance, and also subject to heavy annual
expenditures for its operation, it must
be remarked that the cost is not all ex
pensive when compared with other
first class water works of cities similarly
situated to Los Angeles also that if
provided with such system our city
must be ranked with the first in the
country in respect to thorough water
supply.
As has been stated before, for the lack
of exact and sufficient data, the forego-
| ing estimates are merely rough approxi-
nations, probably in the aggregate ap-
preaching the true cost very nearly,
and only intended to give your honor
able body an idea of the magnitude of
the work before us.
SECOND PLAN.
AS has been asserted, the plan de-
scribed in the foregoing pages embodies
the principal features of a first class
system of water-works.
The amount of water proposed to be
furnished by it is quite abundant, and
the pressure throughout the city ade-
quate for all purposes and emergencies.
Particularly the most valuable and
most densely populated part of the city,
including all the land (which will per-
haps be devoted to manufacturing pur-
poses, is lavishly provided with water
under high pressure. 1t is only nat
ural that such system should be costly
in the first instance, and be encumbered
with heavy annual operating expenses.
To maintain system Of water mains
under permanent pressure of 100
pounds per square inch and over, which
pressure is only required occasionally,
and then only for short period, for the
extinguishing of fires, seems a great
waste of power, and hence of money,
when we remember that half of that
pressure will suffice for all ordinary pur-
poses for by far the largest part of the
time. For it must be remembered that
all this waste power. lying idle in the
mains, is created artifcialiy at great
expense.
1t is the object of the following pages
to describe plan by which this waste
OF power may be avoided and the great
bulk of the annual expenses foroperation
be saved.
This is accomplished by the abolish
ing of the permanent high pressure in
the system of district No. 3, and by pro-
viding it for ordinary consumption only
with low pressure, such as will be se
cured from the reservoir by direct gray
ity, and employ high pressure there only
when it is needed in case of fire.
This can be done by dispensing with
all the costly pumping machinery OF
district No. 3.
1t will be remembered that the water
tor district No. 2, about 100000 gal
Ions per day, has to be pumped to an
elevation of 900 feet above the sea-from
reservoir No. into separate reservoir.
Instead of providing two pumping eta
tions for district No. 2, as stated in the
first plan, viz one at reservoir No. 7 and
and one at reservoir No. 5, we provide
only for one station at reservoir No. z,
and lead the water to the high level dis
trict across the river by special main.
The high pressure main may follow
Effie street and cross the low pressure
main of district No. 3 at or near the dis
tribution reservoir of district No. in
Solano caiion, or on Buena Vista street.
At this crossing both mains are pro-
vided with gates, so that the high pres
sure from the reservoir of district No. 2
may be transmitted to system No. 3,
simply by the simultaneous raising and
lowering OF the two gates, which can be
done by single person, who is especially
engaged for that purpose, and who is in
| constant connection with the head Office
OF the fire department and its alarm sys-
| tenn.
The water drawn by districts No. 2
and No. during fire, would, there
fore, come directly from the high level
reservoir, located near reservoir No. Z,
and fed by pumping engines from the
latter. For this reason the high-level
reservoir will have to be made larger
than if it was only to supply district No.
| 2, and it will only be prudent to pro-
vide also for plenty of power for pump
| ing purposes at reservoir No. z.
| ADVANTAGES AND DISADVANTAGES.
| This plan, as will be seen by the esti-
mates below, is cheaper in the first in
! stanca than the one deacribed first. and