The Jersey City news. (Jersey City [N.J.]) 1889-1906, 1898-02-05

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 pc
enforced for the entire water-line in case Lake
Hopateong or Greenwood Lake are offered as
reservoirs, provided that the bidder SPECIFICS
In his bid what portions of the margins Of
those lakes he wishes excepted therefrom. and
provided further that he succeeds in prevent
ing harmful pollution of the water by a proper
disposal. or by other means.
The depth Of reservoirs shall in all cases ex,
ceed eight feet below the fun water lever
throughout seVenty-fve per cent. of the en-
tire area of tlse reservoir.
lne reservoir dams may be either OF ma
sonry or earth entertainments, as may be pest
suited to the different localities. They shall
be Of sufficient height and strength, of the
best adapted shape, and built in the most
SUBSTANTIAL and thorough manner, on properly
prepared foundations, with the necessary Ell
1inent pipes, gatehouses, with gate-champers
ana vaults. gates. valves. screens, and all
other Appliances and appurtenances proper 1or
the purpose intended. with the necessary
slope walls, by-wash. waste-weirs, blow.ons,
Grams and waste pipes, and they shall pc
provided With such sufficient space or area OF
land along the foot and side as may be nee,
essary 10 protect the same, and shall be fenced
where required. LII case there should not eN-
hitting access to the reservoirs, where locat-
ed, necessary lands and right of way snaii
be acquired and furnished to give such ac-
CONDUIT CAPACITY.
The carrying capacity Of all riveted steel con-
QUITS VIII be determined by the kutter lorec
muia, taking the co-enicient N to equal .olo
tsixteen- thousandths). The smallest Interior
diameter of the shell as constructed shall De
considered TO be the diameter of the pipe.
The carrying capacity of all masonry con-
dults or tunnels will be determined by the
equal .ol4 fourteen thousandths) for brick
work, concrete or ashlar masonry lining, ana
OBS t~eighteen thousandths) for rubble lining.
All such masonry tunnels or conduits shall pc
capable of delivering the full supply called 1or
when discharging with a free upper surface.
the water surface not to be higher than one
foot below the top of the arch.
The head to be used for computing the ca
pacity of the conduits shall be the difference
between the low water level, or the bottom ele-
walton of the available capacity of the reser,
volr or reservoirs at the points OF intake, anu no
the height or elevation of delivery at the
points of delivery designated in these speclh-
cations.
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 me
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 lanas
which it now owns. the conduits shall be laid
on that part thereof designated by the Engi-
LAYING OF coNDUITs.
lie tOtluQlLo SHdit Dt ioia lA LIZ
most thorough manner on true grade lines on
a bed or foundation properly. prepared, anu
where necessary to procure such foundatlon on
piling. The curvature of the pipe shall in no
case be sharper than ten degrees. Cast IRON
pipe. with flexible joints or other devices ac+
ceptable to the Engineer. may be used at
stream crossings. If steel pipe is used where
the stream exceeds % feet in width, It 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 nine shall he covered by at least InTee
feet of earth, and the pipes shall be so placed
as to bring all the longitudinal seams on the
upper quarter of the circumference
Where the pipe is to be laid across rock,
swamp or meadow, it may be above the sur
satisfactory EARTH, sand or gravel 50 tnat =
shall everywhere have at least three rect OF
e~mbankments, 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 to
manner that any section of either pipe &c,
tween such connections may be shut OF and
repaired without interfering with the flow of
water in any OF the other sections. Where
but one pipe is laid, under Plans q or =,
nections can be made without Interfering with
the flow Of water in the first pipe Sucn a
connection shall be made or provided for i'm
lnediately below any intake dams. also on the
river bank nearest the intake at each point of
crossing of the Passaic and Hackensack 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
nroyided for, so that there shall nowhere be
a stretch exceeding five miles in length with
out such connections or provision for such 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
preferably are to be located on SUBMITS. Al
gates are to be iron-bodied, br-onze-mounted
double gates, tested to 300 pounds pressure per
square inch, and are to be united to the pipe
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
stres or strains to which they may be sub
All the composition metal. used, excepting
the valve stem, shall be composed of eighty
five per cent. copper, ten per cent. tin, and
Ave per cent. spelter, and shall have a tensile
strength of not less than 22,000 pounds per
square inch, with five per cent. elongation in
eight diameters and five per cent. reduction
mrst be Straight and smooth. All face joints
must be plain. true and smooth, 50 as to make
perdectly p wass lead cement. valve stems shall
be made of bronze, having a tensile strength
Of not less than 30, 1000 pounds per square inch,
and the screw threads thereon shall be cut
accurately to work true and smooth through
out the entire lift of the valve. Or the up
stream side of each main stop valve a blow
off shall be placed and interlocked with the
sion valve by proper device, so that the blow
off must be open before the main valve can
We AIR VALVES.
Every summit on the pipe line shall be
nrovided with an air valve of the most APP
proved pattern and Of a size properly proper
toned to the duty it has to perform, It shall
be provided with a stop valve bolted to a
DANCED casting or 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
Feasibility of damage from frost or mischief,
hut so arranged as to be readily accessible for
inspection or testing.
BLOW-OFFS.
for ernptyingA the pipe. They shall be pro-
yided with two S-inch valves bolted together
and to a Hanged casting or forging riveted
Inon the pipe. Particular care must be taken
off secure from risk of unequal settlement.
An iron pipe shall be provided to carry the
water from the blow-off to a natural water
course 81 STEEL PIPE.
The mates used in the construction of the
eondujts shall in no case be less than one
sna1ter of an inch in thickness, and the work
ing strain due to the state head Of water to
circumstances, exceed nine thousand pounds per
suuare inch section
The steel for the plates of the conduit shall
- ~ The class called soft and shall be
made by the basic or acid open hearth pro-
cess. II by the basic open hearth process the
steel shall contain not more than three one
hundredti,s per cent. OF PHOSPHORUS and four
one-r,lndrdeths per cent. of sulphur. If by
tie acid open hearth process, the steel shall
contain not more than seven and one-half
ons-I,,,ndredths per cent. OF phosphorus and
ayno,nt Of manganese and carbon to be in
s,sah Quantities as shall produce the best re-
s,,lte THE tensile strength of the steel shall
s s hetvreer the limits of go, 00o) iifty-two thou
~ ,co hnlf n-n .afrSo r4rn1r