The times. [volume] (Washington [D.C.]) 1897-1901, 1900-08-17

the fiscal year ended June 80, 1890. was
yesterday submitted to the Commissioners
by Capt. d. d. Gaillard, the Assistant
Engineer Commissioner having immediate
supervision of the same.
Captain Gaillard states that during the
period covered by the report 1909 feet.
nearly fourteen miles, of new mains of
different sizes were laid He also says the
south basin of the new Brightwood reser-
voir was completed and filed January Z,
1860. According to the report it is built
of concrete and has a capacity Of 150O0,OOO
gallons. the reference OF the water sur
face being, when full, 276 feet d. C.
datum. He says that this basin has been
continually in use ever since it was filed,
except for short period during the month
of May. Continuing the report says:
Work is now in progress upon the north
basin. which is TO be similar in every re-
spect TO that just described. The reser-
voir is connected to the city by thirty
six-inch cast-iron main, on which are
placed four divide valves twenty inches
in diameter. Preliminary experiments
made by the Superintendent of the Water
Department indicated that the loss of head
due to contraction, by means Of conical
feducers, from the thlrty-six-inch main
10 the twenty-ineh valve would be COM
paratively small, and would be more than
compensated for by the ease of manipua-
ton and rapidity with which these valves
could be closed in case of emergency; in
addition, their cost was much less than
that of the thirty-siX-inch valves. Under
present conditions, during the maximum
flow from the reservoir to the city, the
total loss of head due to contraction by
these four twentyinch valves is 1.24 feet.
when certain contemplated changes in
the distribution system have been made,
the maximum rate of flow from the reser-
voir will not exceed 100000 gallons IN
twenty-four hours and the total loss of
head due to the four twenty-inch valves
will then be only about o. foot. AS but
little data is available relating TO loss of
head in like cases, attention is invited to
the report OF the Superintendent of the
Water Department, and TO the interesting
curve showing the measured loss OF head
at different velocities. due to contraction
caused by inserting a six-inch valve on
line of twelve-inch pipe
Pressure on Capitol Hill.
IAN increase of from six to eight feet
of head during the day. in the water ser
completion of the south basin of the
Brightwood reservoir. Most of the pump
ing can now be done at night. and the
very heavy draft on the low service mains
necessary TO supply the pumping station
is no longer made during the daytime.
Two of the boilers at the L Street
pumping station have been equipped vita
Roney mechanical stokers and two with |
Hawley down-draft furnaces.
During the year 2,5029 million gallo |
of water were pumped the average per day |
being $751;. 500 gallons. The mean head |
pumped against in the middle service was |
1852 feet and in the hig5 service 355 feet. |
The total cost of operating the pumping |
station during the year was s1S,74S.37. The |
cost OF pumping 1000 gallons of water |
under actual conditions, exclusive OF inter
est on investment, but including per cent |
depreciation of plant, was 0.S75 cent. The
average amount Of coal used per indicated
horse power, per hour, was 2.13 pounds.
"As the consumption Of water in the city
is steadily increasing, the areas where
pressures are defective are increasing. the
trouble being greatest on that portion of
Capitol Hill in proximity TO the main sup
plying the Navy Yard. Operations are now
in progress whereby the supply for the
navy yard will be entirely separated from
the domestic supply Improved pressures
should result in the areas just described,
as well as in the navy yard
For some time past it has been felt that
a comprehensive project should be prepared
for the future extension of the laE&e dis
tribution mains in the District of Colu nba,
and in accordance with Instructions Of the
Engineer Commissioner the Superintend-
ent CT the Water Department early in 1899
project for such an extension.
Some time after this report was sub
charge OF the Washington AqGeduct had
water supply Of the city; the filtering pant
TO be located in the vicinity OF the new
Howard reservoir. This required a modif
cation of the original project submitted by
the Superintendent of the Water Depart
ment and nee-ssitated drawing the entire
supply for distribution from the vicinity Of
the eastern extremity of the new aqueduct
tunnel. In consequence, a supplemental
report was submitted by the Supsrintend
snt Of the Water Department on November
I, 1889.
THE principal modification embraced in
this report was the change in location OF
he pumping station to a site adjacent to
he new reservoir. After conference with
he officer in charge Of the Washington
lqueduct project was adopted, and v i'll
,e made the basis of the general plan for
uture extensions of the distribution sys-
EN- of the District of Columbia.
Permission was obtained from the Sec
etary Of War to use plat of land, con-
aiming about four and one-haif acres, Sit
lated on Trumbull Street, as a site for a
lew pumping station. General plans for
his station have been prepared. and prom
nent architects have been invited to sub &
nit competitive designs therefor before &
August /, 1900.
"a contract has been entered into with
he Edward b. Allis Company, Of Milwau- s
zee, Wis, for two twenty million gallon !
Ugh duty pumping engines, for the sum I
4 $14S 600. The contract for these engines I
aust be completed by December 81, 1872. a
Revenue and Inspections.
"The operations of the revenue and in
pectlon division of the Water Department +
re given in detail in the report of the {
Water Registrar.
The balance 10 the credit Of the water
ind at the beginning of the fiscal year
7as 1926, 575 66 and the total receipts from I
II sources during the year amounted TO l
349, 33J.0I. The total expenditures. less | c
were $390,979.j6, leaving
alance to the credit of the water fund d
n July l. 1900, of 1884. 935.11 s
Premises to the number of 10 ,2Oi in q
he District of Columbia are supplied with A
water. Inspections Numbering n
OS, 1854 were made by the inspectors of a
he Water Department, and leaks we're @
lund in IL ASP premises The actual nm ,
err of leaking fixtures is much in excess | r