The Jersey City news. (Jersey City [N.J.]) 1889-1906, 1898-02-08

water-Iine Of the reservoirs. ana not less than
s glHsy f Is 5.. II Il, w ia9a,,s spd sh adait 4 "a 81 spa ins
riaded in the conveyance5of the reservoir sites
to the Citvs This Requirement will not be
enforced for the entire water-lihe in case Lake
reservoirs, provided thai the bidder specifies
N his bid what portions of the margins of
those lakes he wishes excepted therefrom, and
provided further that he succeeds in prevent
rug harmful pollution of the water by a proper
disposal, or by other means.
The depth OF reservoirs shall in all cases ex-
coed eight feet below the full water level
fire area Of the reservoir. s.
The reservoir dams may be either of ma.
suited to the different localities. They shall
pc OF sufficient height and strength, OF the
best adapted shape, and built in the most
substantial and thorough manner, on properly
grepared foundations, with the necessary ef-
ana vaults, gates, valves, screens, and all
other appliances and appurtenanees proper Tor
me purpose intended, viii the necessary
drains and waste pipes, and they shall be
PROVIDED with such sufficient space or area OF
lana along the foot and side as may be nee
essarytlo protect the same, and shall be FENCED
Whefe required. In case there should not ex-
ls5 4 public odsaI road or roads leading to and io per
cd, necessary lands and right of way shall
be acquired and furnished to give such ac-
CONDUIT CAPACITY.
The carrying capacity. Of all riveted steel con-
duits viii be determined by the Kntter fo or
es1Nteeh thsusandths). The smallest interior
diameter or the shell as constructed snaii DC
considered tosbe the diameter OF the pipe.
The carrying capacity of all masonry con-
duits or tunnels will be determined by the
e Aus'ef .o n9rm 1fna,td taking s the sotsffe fer ; Brick K
work. concrete or ashlar masonry lining. and
-olS eighteen thousandths) for rubble lining.
All such masonry tunnels or conduits shall be
capable of delivering the full supply called Tor
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-
yation Of the available capacity of the reser,
yolr or reservoirs at the points OF. intake, ahai
the height or elevation of delivery at the
points of delivery designated in these specih-
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 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 10
occupy more thereof than is necessary. Where
the City furnishes right of way over ianas
which it now owns, the conduits shall be laid
on that part thereof designated by the Engl-
Aee' LAYING OF coNDuITs.
The conduits shall be laid in the best and
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 shall in no
case be sharper than ten degrees. Cast IRON
pipe, VIII hexlpie Joints or otner aes, nsad at
stream crossings. If steel pipe is used where
the stream exceeds 25 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 pipe shall be covered by. at least three
feet of earth, and the pipes shall be 50 placed
as sgn to bring ndaEts all + the fb ion eircnnfere Teams on Tue
Where the pipe is to be laid across rock,
swamp or meadow. it may be above the SUI
face of the ground, but must be covered with
satisfactory earth, sand or gravel, SO that II
shall everywhere have at least three rect OF
em~bankments. the contractor must sow grass
seed, or sod, or otherwise protect SAID en-
banknients. Necessary culverts and other con
struetions 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
proper provisions must be made for such con-
n~ections with a second pipe, SO that SAID CON
nections can be made without interfering with
connection shall be made or provided for I'M
mediately below any intake dams, also on the
river bank nearest the intake at each POM OIL
crossing of the Passaic and Hackensack Rlv-
ers. On the opposite bank at sucn 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 pc
a stretch exceeding five miles IN length WIN
out such connections or provision Tor such a
connection.
Gates or stop valves are to be furnished and
so placed as to divide each pipe into approx
mately one and ope-half mile sections, and
gates are to be iron-bodied. br~onze-mounted.
double gates, tested to 800 pounds pressure per
square inch, and are to be united to the pipe
stop valves and all other fittings used on the
conduits shall be equally capable With the
conduit adjacent thereto to resist any pres
sures or strains to, which they may be sub
jeeted.
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
square inch, with five per cent. elongation in.
eight diameters and five per cent. reduction
must be straight and smooth. All face joints
must be plain, true and smooth. 50 as to make
ipa I'VE Of pure lead cement. Valve stems shall
be made of bronze, having a tensile strength
Of not less than t y, eoo ! p0 fbsrso per sh sanaI be ih e3,f
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
sion 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 ap-
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
Hanged casting or forging riyeted upon the
TOP of the pipe. Similar air valves shall also
be placed on each side of every gate. They
shall be properly incased and protected from
nossihility of damage from frost or mischief,
hut SO arranged as to be readily accessible for
inspection or testing,
BLOW-OFFS.
Tn all depressions blow-offs shall be located
for emptying the pipe. They shall be pro-
vided with two 8-inch valves bolted together
and to a Hanged casting or forging riveted
lIpon the pipe. Particular care must be taken
"a have the foundation for both pipe and blow
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 or ditch
STEEL PIPE.
The plates used in the construction of the
conduits shall in no case be less than one
u1arter of an inch in thickness, and the work
ing strain due to- the static mead of water to
vTf7ieh they will be subjected Shall, under no
circumstances, exceed nine thousand pounds per
suuare inch section.
The steel for the plates OF the conduit shall
made BY the basic or acid open hearth pro-
cess. II by the basic open hearth process the
s,,scl shall contain not more than three one
nneHhundrdeths per cent. Of sulphur. If by
tGa acid open hearth process, the steel shall
confain not more than seven and rone-half
one-hundredths Per cent Or phosphorus and
amount of manganese and carbon to be in
s,,el, Quantities as shall produce the best re-
sults. The tensile strength of the steel shall
fa hstween the limits Of $4,000 ffty-two thou-
= "a (6o 0001 Sixty-twO thousand mounds