The Jersey City news. (Jersey City [N.J.]) 1889-1906, 1898-01-19

their beds properly prepared, in accordance
with these specifications, before being put In
service, 4 the engineer shall 50 direct; tna
There shall be q clear. space around the
water-line of the reservoirs. and not less than
sixty feet in width. and additional space
cluded IN the conveyance Of the reservoir sites
TO the City. This requirement will not ne
enforced for the entire water-line IN case Lake
Hopatcong or Greenwood Lake are offered as
reservoirs, provided that the bidder specines
N ms nid what. portions Of the margins o.
those lakes he wishes excepted therefrom, ana
provided further that he succeeds in prevent
ing harmful pollutionSof the water by q proper
exercise OF the powers herein placed at ms
disposal or by other means
The depth Of reservoirs shall in all cases ex,
eeea eight feet below the full water lever
inroagnout seventy-five per cent. oil the en-
tire area Of the reservoir.
The reservoir dams may be either Of ma
sonfy or earth embellishments, as may De pes.
suited TO the different localities. They shall
pc OF SUFFICIENT, height and strength. OF me
substantial and thorough manner, on properly
prepared foundations, with the necessary, ef-
fluent pipes gatehouses, with gate-champers
ana vaults gates, valves. screens, ana an
other appliances and appurtenances proper Tor
tne purpose Intended, with the necessary
drains and waste pipes, and they shall be
provided With such sufficient space or area Oh
land along the foot and side as may be nee,
essary 70 protect the same, and shall be fenced
where required. In case there should not ex-
list q public road or roads leading to and per
hitting access to the reservoirs, where ioeat,
ed. necessary lands and right of way shall
be acquired and furnished to give such ae-
cess.
CONDUIT CAPACITY.
The carrying capacity Of all riveted steel con-
Quits will be determined by the Kutter for.
mula, taking the co-eficient N to equal .ol6
sixteen thousandthsl.s The smallest interior
diameter of the shell as constructed shall be
considered to be the diameter of the pipe.
The carrying capacity of all masonry con-
duits or tunnels will be determined by the
Kutter formula, taking the co-efficient n to
equal OLA fourteen thousandths) for brick
work nnnnratn ~ 1A1a ~ lining and
.OlS eighteen thousandths) for rubble lining.
All such masonry tunnels or conduits shall pc
capable of delivering the full supply called Tor
when discharging with a free upper surface,
the water surface not to be higher than one
The head to be used for computing the ca
pacity of the conduits shall be the dlfterence
between the low water level, or the bottom eie-
walton of the available capacity of the reser-
voir or reservoirs at the points of intake. and
the height or elevation of delivery at the
points of delivery designated in these specin-
cations.
The right of way for conduits shall in no
case be less than forty feet in width, ana
shall be sufficient to enable the City in case
Of purchase fully to protect the pipe or pipes
laid therein, and to maintain and repair the
same. The right of way shall extend from the
reservoir or reservoirs at the point or points
of intake to the points of delivery. Each con-
duit shall be constructed on one and the same
side thereof throughout, and SO as not TO
occupy more thereof than is necessary. Where
the City furnishes right of way over LANDS
which it now owns, the conduits shall be laid
on that part thereof designated by the Ehsi-
neer.
The conduits shall be laid in the best and
most thorough manner on true grade lines on
where necessary to procure such foundation on
piling. The curvature of the pipe snail IN no
case be sharper than ten degrees. Cast IRON
pipe, with flexible joints or other devices ac-
ceptable to the Engineer, may De useu az
stream crossings. If steel pipe is nsed where
the stream exceeds 25 feet in width, 1t must
ba We a thickness OQe-Quarter OF an men great
er than that required for the same pressure
elsewhere.
of the pipe shall be covered by at least three
feet Of earth, and the pipes shall be so placed
upper quarter of the circumference.
Where the pipe is to be laid across rock,
swamp or meadow, it may pc above lns SUI sur
face of the ground, but must be covered with
satisfactory earth,S sand or gravel, so that II
shall everywhere have at least three feet OF
such covering. In all such cases, and on an
entertainments, the contractor, must sow grass
seed, or sod, or otherwise protect SAID EN-
Necessary culverts and other con-
structions must be made to secure the proper
drainage of the adjoining land.
CONNECTIONS.
Where two steel pipes are laid they are TO
be connected at proper points and in such
manner that any section of either pipe be,
tween such connections may be shut off and
emptied in order to be cleaned, inspected and
repaired without interfering with the flow of
water in any of the other sections. Where
but one pipe is laid, under Plans b or =
GIDptI pIONlSlOao KS w
rections with a second pipe, SO that said con-
~nections can be made without interfering with
the flow of water in the first pipe. Such a
connection shall be made or provided for IN
mediately below any intake, dams, also on the
river bank nearest the intake at each point OF
crossing of the Passaic and Hackeasack Riv-
ers. On the opposite bank at such crossings
a single gate must be placed on each conduit
other like connections must also be made or
provided for. so that there shall nowhere be
a stretch exceeding five miles in length with
out such connections or provision for such a
GATES.
Gates or stop valves are to be furnished and
so placed as to divide each pipe into approxi-
mately one and one-half mile sections, and
preferably are to be located on SUBMITS. All
gates are to be iron-bodied,
double gates, tested to 800 pounds pressure per
square inch, and are to be united to the pipe
lines by Hanged joints. All such gates or
conduits shall be equally capable with the
conduit adjacent thereto to resist any pres
sures or strains to which they may be SUD
jected. -
the valve stem. shall be composed OF eighty
five per cent. copper, ten per cent. tin, and
five per cent. spelter, and shall have a tensile
strength of not less than 1900 pounds per
square inch, with five per cent. elongation in
eight diameters and five per cent. reduction
of area at breaking points The valve guides
must be straight and smooth. All face FONTS
perfectly watertight joints, with a very thin
layer of pure lead cement. Valve stems shall
be made of bronze, having. a tensile strength
of not less than 30, 900 pounds per square inch,
and the screw threads thereon shall be cut
accurately to work true and smooth through
ont the entire lift of the valve. On the up
stream side of each main stop valve a blow
off shall be placed and interlocked with the
stop valve by proper device, so that the blow
off must be open before the main valve can
AIR VALVES.
Every summit on the pipe line shall be
provided with an air valve of the most APP
proved pattern and of a size properly proper
TONED to the duty it has to perform. 1t shall
be provided with a stop valve bolted to a
Hanged casting or forging riveted upon the
he nlaced on each side Of every gate. They
shall be properly incased and protected from
Int SO arranged as to be readily accessible for
inspection or testing.
BLOW-OFFS.
In all depressions blow-ofs shall be located
for emptying the pipe. They shall be pro-
and to a Hanged casting or forging riveted
l1non the pipe. Particular care must be taken
to have the foundation for both pipe and blow
An iron pipe shall be provided to carry the
water from the blow-off to a natural water
course or ditch.
STEEL PIPE
The mates used in the construction of the
coS,du;fs shall in no case be less than one
o,1arter Of an inch in thickness, and the work
;np strain due to the static head of water to
witch they will be subjected shall, under nc
circumstances, exceed nine thousand POUNDS pei
lThe steel for the plates of the conduit shall
be Of the class /. s called or ac ,s0f 6psn ana hsa shall nr Be-
naes If by the basic open hearth process the
stsni shall contain not more than th1ee one
hundredths per cent. OF phosphorus and four
thes acid open hearth process, the steel shall
Contain not more than seven and one-half
one-hundredths Per e csr q phosphorus ,1 a and
a,no,,nt of manganese and carbon to be- in