Los Angeles herald., 1891-12-30

considerably 80. when we come to COM
pare the annual operating expenses.
The disadvantage of this system over
the former, consists in the clrcum-
stances that district No. could not be
directly supplied from district No. 3, in
case OF accident to reservoir No. Z, or
the headworks belonging to it..
District No. 1, however, would be just
as favorably situated in respect to re-
ceiving its supply from district No. 8 as
in the first plan. And to provide against
the chance OF district No. 2 being lett
without a supply, reserve pump could
be stationed in the plant at reservoir
No. 7, which would pump water from
the reservoir of district No. 3 to reser-
voir No. z; should an accident occur to
this reservoir, the regular pumping
plant would then lift it further to the
high pressure reservoir.
The lift from reservoir of district No.
2 to reservoir No. is only thirty-five
feet.
A comparatively inexpensive reserve
pumping engine would therefore suffice
to guard against all probable emer-
gencies. -.
Another disadvantage to which this
| latter system will be subjected is the
leasing of water pressure for motor
purposes in the business and manufac-
turing portions of the city.
For the great amount of power created
at the pumping station of district No.
is transmitted to all parts of the dis
trict, and can be utilized by great
number OF small motors, 60 long as the
water 40 used was not required for other
purposes.
But it may also be argued that il the
demand for power for small motors
would yer warrant the great annual
expenditures OF apowerful central plant,
this plant can then or at any other time
be created, if the demanded power could
not indeed be furnished cheaper by gas
engines, or compressed air supplied
from a central station, or, last but not
least, by central electrical plant, or
even by separate electrical apparatus.
The disadvantages, therefore, dwindle
down to almost nothing, and the last
plan appears to me the more desirable.
To prevent the danger of bursting the
plumbing fixtures within buildings,
where the pressure resulting from
temporary or permanent high-pressure
system is great, and also to evade the
dangers and annoyances due to sudden
and violent variations of pressure, it is
necessary as indicated before to provide
such buildings with a pressure regu-
lator.
! Perhaps not less than one-half of all
the taps of the city had to be thus pro-
tected.
ALL TAPS TO BE METERED.
A further requirement for the safe
and economic administration OF the
water system will be the metering of all
taps where unjust methods are en-
ployed by one consumer to gain advan-
tage over others. Here, too, we may
assume that finally one-half the taps
are to be metered.
The expense incurred by metering is
always found a good investment.
ESTIMATE OF THE COST.
The general arrangement of this plan
is seen on the accompanying blue print.
The estimate is as follows:
| 4S-inch conouit to reservoir No. 7..... $4,000
| Dams a, d reservoir No. ............... 45,OOO
Total 81 900
| II-DISTRICT NO /.
| -3O.inch main to Seventh street, "a
inch main to Main street, 2O-inch 1000 ooo
main 10 river. T., r,ots ?3a, HNN
Total $613, 900
OF this for the present $40, 900 is re-
quired.
DISTRICT 2.
Qnclusive of power for high pressure for
district 81
High level reservoirs. capacity
million gallons .............:$ 10000
Two 10 million gallon pumps and
| Force mains. etc etc .... $4,000
| High pressure main on Efie street 100000
| Secondary matn.......... $4,000 !
| Reserve pump ...... -....... $4,000
Total al...... .S 64S,OOO
Daily expenditure for pumping 49,. 5 95
An outlay for the requirements OF the
present would amount to about $43S, 900
exclusive of S1S1 900 for headworks for
reservoir 7, with daily expenditure OF
$65.
DISTRICT 8.
| Headworks at lower source $ 10000
4s-inch supply conduit ........ 94 Sa 0oV Vo0
| Reservoir ........ -. ............ oo,OOO
| Mains and secondary mains. ....... 100000
Total. 81 900
The present requirements can be met
with $840,000.
The total cost then of this system, ex-
elusive OF rights of way, cost of land for
reservoirs. for fire hydrants, meters and
pressure regulators. will be:
ACKNOWLEDGEMENTS 1S1 900
ACKNOWLEDGEMENTS. $4,000
| 4 ........................ 64S,000
4,.................... 1,229,O00
5-Filters s........... ........ 225,0OO
6-Reoairs of streets, ETC., etc.,. 100000
Total 80, 900, ,ooC
With total daily 4 -aiture fol
pumping of sos.
OF this the present would require:
.........$ 181, ,00(
Observation-Disclosures. 47O,00(
.............. 438,OO(
Observation-Disclosures. 84O,OOs
5-Filters Observation-Disclosures. 10O,0O(
6-Repair Of streets ............. 50,OO(
Total 81, ,07 ,00t