Burlington weekly free press. [volume] (Burlington, Vt.) 1866-1928, 1879-12-05

/ expensive, and 10 raise the whole water con-
/ sumed by the CITY go feet higher than now
1 by means of the pumps at the lake, seemed
to involve so many changes, and to call for
| so large an outlay and yearly expense, that
/ it WAS to be classed only with last resources.
/ | mention these plans TO show that they have
all been duly considered and would respect
fully submit the following, as an adequate
plan, and as the simplest and cheapest which
have been able to devise
The general plan is to pump water from
the present reservoir to the high land east of
/ what is known as Howard Summit, and store
I it there either in tank or an earthwork re-
servoir. If a reservoir is used, the maximum
head will be about go feet above present
supply. With tank 20 feet high, the maxi
mum head will be about 50 feet above the
present supply. In connection with either
method of storage | propose 10 use the same
pumping engine. The motive power for the
work is 10 be obtained in tho following man
ner: As you are probably aware, We have
/ for the last few years run the pumps at the
/ lake nights during the summer months with
very satisfactory results in the quality of the
water. | propose, in the event of a higher
service being constructed. 10 run those
pumps nights throughout the year. We
pump at present 10000 gallons of water an
hour and run about 10 hours in the "a. 1t
is safe to assume that pumping nights will
ensure a flow into the reservoir (after allow
ing for night consumption and leakage of
about 10000 gallons an hour This same
water will, of course, flow in the other dircc-
ton during the day, which will make an
average flow during the IA hours in which
the pumps at the lake are idle, of over %, 500
gallons an hour. l propose to put some form
of hydraulic motor in the l0-inch pipe in
reservoir lot This motor will be IL feet
lower than the maximum level Of the wafer
in present reservoir, and il will be easy to
maintain the level of water in said reservoir
at an average height of 10 feet above the
motor.
Theoretically, the flow during the II hours
of the day will act upon the motor with an
energy equal to 2S, 500 gallons, falling through
ten feet and will be equivalent in work
to ssSS22 or 100 gallons raised 60 feet, or
tn sssGQe or 3, $50 gallons raised so feet
per hour. During the ten hours of the
night in which the pumps at the lake are
running, the theoretical result will be 6,G66
gallons raised 60 feet, or 5000 gallons raised
so feet each hour of the ten. The total
theoretical "a hour supply will therefore be
132. 466 gallons, raised 60 feet above present
supply, or 90, 500 gallons raised so feet above
present supply. Allowing 50 per cent loss of
power, the practical supply will be Cd, 233 gal
Ions or 40, 900 gallons respectively. | esti-
mate that there are at present, 200 inhabitants
on the line of high service which propose,
not including those living at the college and
hospital. Allowing 100 persons to each of
these institutions, the population is 400. At
/ the rate of so gallons per head per day, 400
| people would require L "a hours supply of
10000 gallons, the minimum capacity OF the
/ pump being, as above, IS, 900 gallons.
/ The use of motor in the above Position
/ would absorb an average of ten feet and u
maximum of Is feet of the present daily
pressure and add corresponding head to the
night pressure. This variation would I've in
| appreciate except in the higher portion of
the lower service. The maximum expense
of operating the pump Of the upper service
would be an addition of -, TO the cost
/ of the fuel required Cor about 26 tons of
/ coal) 10 run the pumps At the lake for the
! present supply. To this should be added of
/ course any repairs which it may be necessary
! TO make TO the machinery of the upper ser
/ vice think it probable that it will be I'M
necessaryto pump through the motor large
part of the year, hut do not by any means
affirm that it will be So
| In the above estimate of the capacity of
the motor, | have considered the pump
for the higher service 10 he pro-
! pOrtioned TO head due to the difference of
| level between the motor and the water in the
present reservoir. IT, at any time, the sup
! ply 10 the upper service should become in
sufficient, the size of the pump could be in
creased and some of the 33-feet head, due 10
atmospheric pressure, could be used in driv-
ing the new pump by the same motor in the
same position. This would, of course,
make a corresponding variation in the head
of the lower service.
propose, in either case Of storage, as
above, TO use substantially the same piping,
which is to be as follows:
A G-inch main from pump at reservoir TO
Main street. An S-inch main in Main
street, westerly to Prospect street. An S-inch
main in Prospect street, sOutherly to about
the southline of Bishop DeGoesbriand's land
An S-inch main easterly through land of
Bishop DeGoesbriand, to proposed tank OF
reservoir. A 6-inch main in Prospect street,
from Bishop DeGoesbriand's south line
southerly TO the height of land in Prospect
street, about opposite the late residence of
| F. J. Hendee. A G-inch main in Prospect
street. from Main street TO College street.
An S-inch main in High street, from Main
| street to Colchester avenue. An S-inch main
in Colchester avenue from High street to a
] also propose to connect the 4-inch main
now laid in Prospect street, northerly from
College street, with the higher service, as far
north as Pearl street, putting the hydrant
now at the corner of Prospect and Pearl
| streets upon the higher service and the con
! vent upon the lower service. The continual
ton OF this 4-inch maiA westerly through
Pearl street | propose to connect with the
lower service, by means OF the G-inch main
which now supplies that part of the CITY
which is near Wnooski Falls Also an
overflow pipe from proposed reservoir OF
tank, westerly through land Of Bishop DE.
Goesbrand TO Prospect street, thence north
erly in Prospect street to south end of inch
cement pipe now laid in Prospect street. This
4-inch cement pipe nj present connects with
the Main street l0.inch pipe ! propose to
sever this connection, and using this pipe as
part Of the overflow, lay pipe in continua-
ton from its north end eastcrly through
Main street TO the present reservoir.
All the overflow pipe which is to be laid
is to be inches in diameter and all the pipe
to be laid is to bc of cast iron This piping
and the MIGRANTS and gates as proposed, are
shown on the accompanying plan, which
also shows the maximum heads due 10 either
method of storage. at various points upon
the line Of high service.
Thus far the plans are similar in detail.
have estimated below, the cost Of a tauh
capacity 100, 900 gallons, and also of
reservoir Capacity 500. 900 gallons ! wOulc
prefer in this report to leave the matter o.
storage an open question. ! will endcavol
to state ss nearly as can what seem to m'
the prominent features Of either. Of cours,
with 30 simple and reliable pump as pro
posed, the great requirement for ample
storage ~ safety in case Of fire. A tank II.
proposed would answer the following de
manfs at the college II would start
streams through $50 feet of % inch hose an,
| inch nozzle, with head at the nozzle ol
40 feet above the road in front of the college
IL would MAINTAIN those streams for it'll,
less than four hours, with IA head at the n0l.
zlc gradually decreasing from a feet t,
about IS feet The pump (as thus far pro
posed being in average operation through
out the time, would prolong the time %
flow rs above TO about 3 hours | do not sa,
that simple and reliable means could not b,
used to greatly increase the capacity of tn,
pumps in large fire, but with appliance,
which have been proposed the fire streams
would he reduced to one efficient stream II
the end Of : hours.
The reservoir would maintain
streams under similar conditions Will
head of 30 feet above the grOun'
on the nozzlcs for about "A hours. AT tn
hospital, with a hydrant near the buildings
connected with high service by an incl
pipe, the tank, under the same conditions a
before, would start two streams with heat
upon the nozzles Of about forty feet abov