The Jersey City news. (Jersey City [N.J.]) 1889-1906, 1898-02-02

There shall be u clear space around the
sixty feet in width. ana additional space
where Il may be needed. when is to be M
cluded IN ne conveyance Of the reservoir sites
70 the City. This requirement VIII not pe
enforced for the entire water-line in case Lake
iiopatcong or Greenwood Lake are offered as
reservoirs, provided that the bidder speciles
IN his bid what portions of the margins OF
those lakes he wishes excepted therefrom, ana
ing harmful pollution Of the water BY a proper
exercise of the powers herein placed at his
disposal, or by other means.
me depth OF reservoirs shall in ali cases ex-
eeea eight feet below the full water level
throughout seventy-five per cent. of the ems
tire area of the reservoir.
The reservoir dams may be either of ma
sorry or earth entertainments. as may be pest
suited to the different localities. They shall
pc OF sufhclent height and strength, OF Inc
best adapted shape. and built in the most
substantial and thorough manner, on properly
fluent pipes, gatehouses, with gate-chambers
ana vaults, gates, valves. screens, and az
the purpose Intended, with the necessary
slope walls, by-wash, waste-weirs, blow-ofrs,
drains and waste pipes. and they shall be
land along the foot and side as may be nec-
essary to protect the same, and shall be fenced
where required In case there should MOI ek-
list a public road or roads leading to and per
hitting access to the reservoirs, where local.
ed, necessary lands and right Of way shall
De acquired and furnished to give such ae-
cess.
CONDUIT CAPACITY.
~ carrying capacity oil all rlVeteu steei Sou
duits will be determined by the Kutter forc
mala. taking the co-eficient N. to equal .ol6
sixteen thousandths). 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.
QUITS or. tunnels wifi be determined by the
Kut:er formula. taking the co-efficient y TO
equal Ola Qourteen thousandths) for pricR
W., ~opA, eoacrete or ashlaI1 masonry lnang; u
All such masonry tunnels or conduits snail be
capable of delivering the full supply called for
Nrhan dicaio rof1n rr,+. - - E1tnnar CIfrf1nh
the water surface not to be higher than one
foot below the top of the arch. 1T
= The head to be used for computing the ca
pacity of the conduits shah be the difference
between the low water level. or the bottom eie-
vation Of the available capacity Of the resea1
the height or elevation of delivery at the
points of delivery designated in these specifi-
RIGHT OF WAY.
The right Of way for conduits shall in no
case be less than forty feet in width. and
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-
side thereof throughout, and so as not TO
occupy more thereof than is necessary WneTe
which it now owns, the eonduits shall be laid
on that part thereof designated by the Ehg'-
neer.
The conduits shall be laid in the pest ana
most thorough manner on true grade lines on
a bed or foundation properly. prepared, ana
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-
ceptabie to the Engineer, may be qsed az
stream crossings. If steel pipe is used where
the stream exceeds %. feet in width, 1t must
have a thickness one-quarter of an inch great
er than that required for the same pressure
elsewhere.
Where pipes are laid in excavation, the top
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 be above the sur
face Of the ground, but must be covered with
satisfactory earth, sand or gravel, SO that II
shall verywhere have at least three zee. a 81
entertainments, the contractor must SOW grass
seed, or sod, or otherwise protect said en-
bankments. 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 10
be connected at proper points and in such
manner that any section of either pipe pc
tween such connections may be shut off and
emptied in order to be cleaned, inspected and
repaired without interfering with the now OF
water in any of the other sections Where
but one pipe is laid, under Plans b or Z,
proper provisions must be made for such con-
ncctions 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 Tor I'M
mediately below any intake dams, also on me
river bank nearest the intake at each point OF
crossing of the Passaic and Hackensack HiV-
ers. On the opposite bank at such crossings
a single gate must be placed on each CONDUIT.
Other like connections must also be MADE OF
provided for, so that there shall nowhere De
a stretch exceeding five miles in length with
out such connections or provision Tor sucn a
connection.
Gates or stop valves are to be furnished and
so placed as to divide each pipe into approx
mately one and one-half mile sections. and
49, T. ha 1anafad mr. nm ALI
gates are to be iron-bodied, bronze-mounted,
double gates, tested to 300 pounds pressure per
lines by Hanged joints. All such gates or
stop valves and all other fittings used on the
conduits shall be equally capable with the
conduit adjacent thereto to resist any pres
sures OF strains to Which they may pc SUD
jected.
the valve stem, shall be composed of eighty
five per cent. copper, ten per cent. TIN, ana
five per cent. spelter, and shall have a tensile
strength of not less than %. 900 pounds per
square inch, with five per cent. elongation IN
eight diameters and FIVE per cent. reduction
of area at breaking point. The valve guides
must be straight and smooth. All face joints
must be plain, true and smooth, 81 as to make
perfectly watertight joints, with a very thin
LAYER Of pure lead cement. Valve stems shall
he made of bronze, having a tensile strength
of not less than g. 600 bounds per square men;
accurately to work true and smooth through
out 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
y AIR VALVES.
Every summit on the pipe line shall be
provided with an air valve OF the most ap-
proved pattern and of a size properly proper
toned to the duty it has to perform. 1t shall
he provided with a stop valve bolted to a
Hanged casting OF forging riveted upon the
TOP Of the pipe. Similar air valves shall also
be placed on each side OF every gate. They
shall he properly incased and protected from
possibility of damage from frost or mischief,
but so arranged as to be readily accessible for
inspection or testing.
BLoW-OFFs.
In all depressions ~biow-offs shall be located
for emptying the pipe. They shall be pro-
vided with two s-inch valves boiled, t~ogetheE
unon the pipe. Particular care, must be taken
to have the foundation for both pipe and blow
off secure from risk Of unequal settlement.
An iron pipe shall be provided to carry the
course Tor ditch.
STEEL PIPE.
THE mates used in the construction of the
cocduits shall in no case be less than one
o,,arter Of an inch in thickness, and the work
ing strain due to the static head OF water to
which they will be subjected shall, under no
circumstances, exceed nine thousand pounds per
sau1are inch section.
The steel for the plates of the conduit shall
he of the class called soft and shall be
made by the basic or acid open hearth pro-
stsei shall contain not more than three one
bnndredths per cent. of phosphorus and four
one-hundrdeths per cent. Of fulphur.s If by
the acid open hearth process, the steel shall
cnntain not more than seyer and one-half
onaShundredths per cent. of phosphorus and
four one-hundredths per cent. of sulphur. The
snnb Quantities as shall produce the best re-
su1fs The tensile strength of the steel shall
he between the limits of (52,o00 ffty-two thou
sa,d and (62. 000) sixty-two thousand pounds
1eHN ..,a inch the fest Suppinpepc . ~, ba Q