The sun. [volume] (New York [N.Y.]) 1833-1916, 1910-06-05
The REAL ESTATE MARKET
DISTRIR ting TINE CtTSkILL
WATER SUPPLY.

"tNEW ~ IT'LL
A~Prrssure TunRel Frsm sata apn Fept
RrloN the SuFtaer IN Manhattan Ten
tsmplsted By the, Itty. but tip,aaed ~
uNpayer -llearlng Neat Tuesday.
A subject in which many taxpayers
examinations are taking an active In
tsresi will come up before the Board Of
Estimate this lEeeh. Next Tuesday eve
mig at so'clock the board will have a hear
ing in the council chamber Of the City Hall
on the proposed pressure tunnel for
distributing the Catskill water supply
The supply will amount TO S0O.OOO. OOO gal
cos daily, and the question IL whether IL
shall he distributed by means of a tunnel
through solid rock several hundred feet
bslou the surface or by means Of a pipe
has system similar 10 that nOw in uss.
In a report % the New YOrk Board Of
Water supply dated October 0, 1915. 10
made for supplying Brooklyn with 100. =
gogO gallons daily and Richmond with
amoOlO gallons daily The distribution
oi the remaining -. O0O .00o gallons was
IN for future Consideration
Wrhe plan contemplated a steel pipe
line from the HillvicW reservoir 10 the
Vast River. a ten foot tunnel under the
Fast River az Port Morris 10 Long Island
and a steel pipe linz connecting the tunnel
o. Forest PARK in Brooklyn A cast iron
pipe line vas % extend also from the tun-
nj 10 the Narr0ws. passing under the
NarrOws 10 Richmond The cost Of this
YORK was estimated a. tlO.22AOOO A
ressrvolr vas propossd a. Forrest Park.
Brooklyn, but no provision was made for
IL IN the estimat' no provision was made
ipr a reservoir In RI ,hmond and the report
also failed 20 consider ne pipe line re-.
quired for distributing iOO. O0O 100 gallons
tally from the Forest Park reservoir to
Brooklyn.
To provide for thess reservoirs and dis
'7buting piTs lnes'would cost approx
matsly ts.OOOO0O more The sum Of tiS.
1901 - would thus be required for dis
trblting about One-quartsr q tho Cats
hBupply under the partial plan proposed
1915
On November Is. 1919. the Board Of
Water supply abandoned its original plan
and substituted tho pressure tunnel prof.
ct This project. which will take care u
no entire Catakill supply. vas submitted
ia COMMITTEES % experts consisting Of
Clemens Herachel. hydraulic engineer;
Francis L. Pruyn. consulting engineer.
d
Eu The COMMITTEES handed in la re-
por' nm May u. 1910. In the report a
ormpSrizDn 10 made bstWeen tho relative
nsuts II the pressure tunnel and the pipe
hns system
Tho proposed Manhattan tunnel IL tn
pm from the HillVisW reservoir. located
A. The Downstream end u the Catskill
water supply conduit nov under con
suric,ion thence IL will pass undcr, the
westerly part ~ the middle Of Manhattan
Island and across % Brooklyn. Its
Carrying capacity Ia 10 diminish Gradu-
civ rom Hillvisw 70 Brooklyn. Accord
ing 20 ne report the tunnel In order 20
convey water under pressure must b.
naoei a. such a depth below the surface
y no ground that the weight per square
FOOT q 'he everything material IL az least
'oual ~ The pressure per square foot up
Wti = the contained water. Such a
0oa'.0n A. regards depth below tho sur
i'os places no reliance on the strength
nr -as.srance % rupture Of the surround
"a edge rock and IL therefore conesrva-
lively safe This method Of construction
-aoss ne tunnel about 200 feet below the
street .sveI but for the purpose Of cross
as DO good rock under the Harlsm River.
Nanhattanvills Valley and the East River
lh' depth il increased there 70 anywhere
from y5o 20 40 feet II IL kept elsewhere /
e. De- ass than 80 feet beneath the rock |
alor
T. rropossd Manhattan pressure tun-
~ Hka ne CStskll aqueduct now build
hg f. Fl. AIRY at its upstream end .
HpgT - 80 00O On gallons daily. and /
las.ius 20 gradually diminishing siass
y by Hs.yu through the bOrOugha % i
10 hrluH and Manhattan will supply
NJ distribution systems Of these bOr-
ls'- 20 "a pressure where desired d
N't a pounds a square inch greater
lah ~ -r--"ut and by paps line extern
H1r- would also thus supply the bar-
JI-ens and Richmond.
lhf'" '- mo- room here 90 give in full
M 'rfugs ~ tho Connittse Thase.
are summed up in the report
,L '..uWIng paragraph.
h' E-ra tersely 10 sum 40 che con
.Ff". which are not Included In
NO. Hnparison % hrNt cost and 20
," n" value u tho advantages
.n'' proposed Manhattan Drsasurp
.hH 49," confer upon the city. such
Add pressure gained u very
.la '"m 10 the way u saving Are
and IN saving pumping ca
FNN- .urmnbranoe 81 streets dunnR
..'. r nor u their sIhaOii there
- h. fle like conaidsrntions. W.
H -H hat tho city 81 New Torh
ave tne Manhattan praasuFe tunnel
go "'s tho Catahin water Hupply
- " 'tH 'aieni, and from the nesulta
I T.1-s We find that the Nan
-, ''"ssIrs tunnel nay b. onn-
a.. ~ o. much ieaa oogt. With iaza an
and IMMEDIATE danger dlrinR
n. rhai it uil b. morn vniu-
49,, Immediately and IN tho future
No. much less n operate and
MH ."