The Jersey City news. (Jersey City [N.J.]) 1889-1906, 1893-08-14

added to the supply. The Worthlugton
pumps could easily pump against the
| slight additional head required to effect
this and the increased strain on nain
| Is too slight to be taken into ACCOUNT.
RAISING THE HIGH WATER LINE.
Second. BY raising the high water line
at the BelleVille reservoir from six to ten
feet. There is no difficulty IN the way of
this work either. and with the increased
head the same effect aimed at in direct
pumping. as recommended in The pre-
ceeding paragraph, would be attained.
The WorLhtngtons could pump then
either into the Delleville or Sum nit ave-
nue. reservoir under increased head. fur
nishinR In either case several million
gallons more to the supply. 1t should be
stated in this connection that owing to
insuficiently high water line at the
Belleville reservoir, the full head that
could be kept al that reservoir from the
Cornish engines supplying it through the
stand pipe can never be reached.
INCREASING HEIGHTH OF STAND PIPE.
Third. BY Increasing, II necessary. the
height of the stand pipe at Belleyille,
which would simply mean the addition
of a piece OF pipe at the top. There is
quired. With higher banks at BellevilIe,
as above recommended. about five feet
more head could be obtained from the
stand pipe as it is today. Sucn au gddi-
tion to the stand pipe might be made ag
to be able to increase the head ten feet.
The engineer OF the pumping station, who
has been there for good many years, Is
positive of being able to work the Corn-
ish engines under an increased lift
of six feet. This point can and
should De readily determined by exper
iment; aud while the increase, If any, in
the height OF the standpipe herein sug-
gested is too trlhiug to INTRODUCES any
u $50
would recommend before making any
addition to it, a thorough examination
(Which we were not required and did not
have time to make) OF the standpipe. 1t
is obvious that It's condition does not
affect the question of laying or not the
new main; and should be known in either
case. As you are aware, of the TWO six
fsor standpiDeS in the tower one has not
been usea for years. the bottom being
gone The foundations of both staudpIpes
are SO itnbedded as not to be readily ex-
Rmined.
LOW DELIVERY CONNECTIONS.
Fourlh-By making low delivery con-
nections from the mains to the Summit
avenue reservoirs, thus securing much
greater head when the reservoirs are low.
Bearing in mind the fact that these con-
necLions can be lowered In the 36,inch
mains, say about 20 feet in Reservoir No.
2, and about 35 feet in Reservoir No. 8,
the great difference in the dlscharging
capacity of the mains when the reser-
voirs are low, under the proposed altered
conditions, even If there WAS no increase
OF head at Belleville, becomes apparent.
OF the increased delivery that may be
obtained through the adoption of the
above recommendations some idea may
be given by stating that assuming total
gain of only 10 feet in head the combined
discharge of the three mains we calculate
sd mn lhorz a mil
gallons in twenty-four hours, or 261<
million gallons. leaving the 20 inch main
entire out. 1t has been snOwn that the
average gain in he d will be much
greater than 10 feet. Miuor remedies. as
the blowing off Of sediment accumulated
in the low levels on the meadows, stop
page of leaks. cts. are too evident to TO-
uuire special mention.
CONCLUSION OF REPORT. A-s
Under the giyen Instructions we CON
cluds and report therefore;
That the present capacity of the mains
Isis tnsa tacienE 10 prrYtsl safsiy for the
given consumption ana thEe ft wUnfd be
unwiss to prolong the present state OF
things.
That the measures above recommended,
all of which can be readily carried out at
comparatively small cost, will IN ths
shortest possible time remedy the press
ing needs of the city by increasing the
capacity of the existing mains so as to
leave for several years more safe mar
gin between supply ami consumption.
That the laying of the additional main
can and should bs deferred until the
final source of supply is determined
within reasonable period OF time, say
three or four years,
Under your written and verbal
Instructions we were not to enter into
details. and could have had no time to
prepare them, having been reQu ested TO
hand this report In today, IL possible, tor
the meeting of your board. We have,
therefore purposely omitted even those
details we have worked out; but will ct
any time cheerfully give your board any
necessary explanations or develop any OF
the points of this report.
Respectfully submitted,
I. NJ. De VARoNA,
ROBERT VAN BUREN.