Los Angeles herald., 1891-08-12
Discharge in Discharge in
n a,1hio ft nor Ca1c nor Oh

i Sssss 55,,sSS:'SsS 55,ss$SS''sssSS Ss.:i$$ Ss.i$$
The approximate cost of 9O2, AGO feet
of pipe is $121 ,254: 800 gates, $4,000 !;
water filler, $4,000; pumps and build
ings, $5S49; real estate and reservoir
sites, S25, 1856 construction of reservoirs,
$20,000 total, $242, ,43S.
By ordinance No. 267 the city OF Los
Angeles granted to the Citizens Water
company twenty inches OF water, miners
measurement, under six-inch head.
This is equivalent to half a cubic foot
per second, or 323, 1856 gallons u. s. in
twentyfour hours; the number of serv-
ices of the Citizens Water company is
2,200, and allowing five persons to each
service, and 100 gallons expended by
this company in twenty-four hours, be-
ing more than three times the Quantity
they are entitled to under ordinance No.
267, which is, as above mentioned. only
1923, 1876 gallons.
recommend that a 16-inch double
riveted steel pipe of No. IA steel be laid
down from the Ivanhoe reservoir to the
College-street reservoir, and that no
connections of any kind whatever be
made with this pipe. This will give a
supply of 1867 900 gallons in twenty
four hours, in addition to the present
supply, and this increase is ample to
provide for the future development OF
the Citizens water company.
BY this means the city reservoir be-
longing to this company could be kept
full, or almost full, at all times, so long
as the pumping system is kept equal to
the demand.
t. alx fLct Lo
should be filtered before delivering it to
the citizens, as there is great room for
improvement in the water supplied by
this company.
The estimate of cost of works before
mentioned, $242, ,43S, was compiled from
data given by the Citizens Water COM
pany, but this company gave the cost
of construction at $272.754, being $56, ,175
more than l have estimated; but this
discrepancy can be partly accounted for
in this way: In carrying on works for
a number of years, and increasing them
piece by piece, more expenditure is in
Cured than if the works were designed
and carried out, as whole, at one time.
The College street reservoir contains
S00,0 gallons, and its full depth of
water is 101a feet.
The Old Beaudry reservoir contains
100000 gallons, and its depth is 10
feet.
The highest reservoir contains $780,
900 gallons, and its depth is IA feet.
1vanhoe reservoir, about ten acres,
contains 100000 gallons. Complaints
are frequently made that there is mad
equate pressure on the water mains dur.
ing fires. 1t is known that at a certain
hydrant there is pressure of $50 feet !;
during fire, 400 feet of hose of about
2Is inches diameter is attached to this
hydrant, and a stream from its nozzle is
directed on burning house. The house
is ON fire at a point 40 feet above the
hydrant, and it is found that a jet from
the hose will not reach to this height.
In many cases it is asserted that the
pressure at the hydrant is no more than
that at the nozzle of the hose. The
statement is often made that. if the
pressure at the hydrant is $50 feet, it
should be the same at the end of the
hose, however long it may be. That
this is not 80, will now endeavor
to explain. From numerous expert
xnents it has been found that, in
round numbers, every foot in length of
21l inch hose diminishes the pressure by
three inches, or twenty-five per cent !;
& tIIfefore, the 400 feet of hose above men
toned diminlshes the pressure by 100
feet. There is then left at the nozzle of
the hose pressure of 30 feet. This,
again, is subject to another reduction.
1t has been found by experiment that;
varying With different conditions, five
eighths of this 30 feet head would be the
height to which the body of water in the
Jet would reach; that is to say, FIVE
eighths of fifty feet equal to 81 feet. The
spray reaches higher, but that is not of
much account. In the thinly popu lated
districts, in the billy portions of the
city, the hydrants are far apart, necessi-
tating in many cases long pieces OF hose
to reach fire, and it is to these long
hoses that the diminution of the charge
is due, when at the same time there is
ample pressure at the hydrant.
At the office of the Citizens Water
company it was learned that under the
management OF " Kays plans were
being rapidly fo for establishing
q permanent sos se OF supply for the
hill reservoirs, to take the place OF the
Temporary arrangement with the City
water company which enables them at
the present time to keep some depth Of
water in the high service reservoir.
Councilman lnnes was 9een by HER