The Jersey City news. (Jersey City [N.J.]) 1889-1906, 1898-01-15

II any ~artiheial lakes Dr. ponds where the
ing Of adjoining lands, shall be used az reser,
! yoirs, they shall first be drawn down anu q 2
with these specifleations. before being put in
service, IL the Engineef shall 50 direct; 8.
ahere shati be . clear space nd n at0n less than
sixty feet in width, and additional space
Where II may be needed, which IS 70 pe IN
Guided in the conveyance OF the reservoir sltes
g the city. This requirement Will noi y
enforced for the entire water-line in case LAKE
Hopatcong or Greenwood Lake. are ohered as
IN nus bid what portions of the malsins ~
those lakes he wishes excepted thereironn, aau
provided further that he succeeds IN preNent-
exercise of the powers herein placed at ms
disposal, or by other means.
The depth of reservoirs shall in all cases ex1
eeed eight feet below the full w wa The enl
tire area of the reservoir.
The reservoir dams may be either OF ma ma.
sorry q earth embankmendS as ma Tbev shall
be of sufficient height and strength, OF .ns
best adapted shape. and built in the mos
substantial and thorough manner, on properly
prepared foundations, with the necessary ef-
fluent pipes, gatehouses, with gate-chainperS
and vaults, gates. valves, screens. and an
the purpose Intended. with the necessary
slope walls. by-wash, waste-weirs. blow,offs,
drains and waste pipes, apd they shdu pc
provided with such sufficient space or area OF
land along the foot and side as may pc neg,
| tcodAy " IL Sdlflc ditd StAAtt
where required. In case there should not ex-
list a public road or roads leading TO ana per
ed, 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 will be determined by the kutter iore
muia, taking the co-efficient N to equal .olo
Sixteen thousandths). The smallest ihtelior
diameter of the shell as constructed shaH pe
considered to be the diameter Of the pipe.
duits or tunnels viii be determined by the
Kutter formula. taking the co-eff1cient n 70
equal OLA Qourteen thousandthsl tor prica
work, concrete or ashlar masonry lining, and
.0lS eighteen thousandths) for ruppie ll,lihs.
All such masonry tunnels or conduits s1aii pc
capable of delivering the full supply caliea Ior
when discharging with a free upper surface,
the water surface not to be higher imam 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 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 speeih-
cations.
The right OF way for conduits snait IN ny
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 ana 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. Nnsae
the City furnishes right of way over lanas
which it now owns. the conduits shall pc iaia
on that part thereof designated by the Engi-
LAYING OF coNDUITs.
The conduits shall be laid in the pest ana
most thorough manner ION true grade nnes on
a bed or foundation properly prepared, ana
where necessary to procure such foundatlon On
piling. The curvature of the pipe shai 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 az
stream crossings. If steel pipe Is used wnere
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. w
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 places
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
face of the ground, but must be covered with
satisfactory earth. sand or gravel, 50 that u
shall everywhere have at least three feet 81
such covering. In all such cases, ana on an
embankments, the contractor must sow grass
seed, or sod, or otherwise protect SAID en-
| bankments. Necessary culyerts 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 DE,
| tween such connections may be shut on ana
/ emptied in order to be cleaned, inspected ana
/ repaired without interfering with the few OF
water in any Of the other sections. Where
but one pipe is laid, under Plans B or e,
proper provisions must be made Tor sucn con-
~nectfons with a second pipe,-so that salq e 9th
the flow of water in the first pipe. Sucn a
| connection shall be made or provided for IN
mediately below any intake dams, also on tns
river bank nearest the intake at each point OF
| crossing of the Passaic and Hackensack XIV
ers. on the opposite bank at such CROSSINGS
| 4 single gate must be placed on each conduit.
Other like connections must also pc maae or
provided for, SO that there shad y , nowher wit be
| out such connections or provision Tor such a
connection.
Gates or stop valves are to be furnished and
so nlaced as to divide each pipe into approx
mately one and one,half mile sections any au
gates are to be iron-bodied,
double gates, tested to 800 pounds. pressure per
lines by Hanged joints. All such gates or
stop valves and all other fittings used on me
1 conduits shall be equally capable with the
conduit adjacent thereto to resist any pres
sures or strains to wAich they may be sub
jected.
the valve stem, shall be composed of eighty,
| Eve per cent. copper, ten per cent. TIN. and
Lfve per cent. spelter. and shall have a tensile
strergth of not less than %, 600 pounds per
square inch, with five per cent. elongation IN
| eight diameters and five per cent reduction
must be straight and smooth. All race JOINTS
must be plain, true and smooth, SO as to make
aver az rnire lead cement. Valve stems shall
be made Of bronze. having a tensile strength
| Of NOT less than 10000 pounds per square inch,
and the screw threads thereon snail pc cut
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 waive can
pe AIR VALVES.
+ Every summit on the pipe line shall pc
t=rrovided with an air valve OIL the most APP
/ nroyed pattern and of a size properly proper
Toned TO the duty 1t has to perform. 1t shall
( be provided with a stop valve pplted TO a
Hanged casting or forging fivetedR 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
possibility of damage from frost or mischief,
but so arranged as to be readily accessible lor
inspection or testing.
BLOW-OFFS.
In all depressions blow-ogs shall be located
for emptying the pipe. They shall be pro
| yided with two S-inch valves bolted together
and to a Hanged casting or forging riveted
10 have the Foundation for both pipe and blow
off secure from risk of unequal settlement;
Nm iron pipe shall be provided to carry the
water from the blow-off to a natural water
course or ditch.
STEEL PIPE.
The nlates used in the construction of the
| conduits shall in no case be less than one
nuarter of an inch in thickness, and the work
ing strain due to the static heaa OF water 70
circumstances, exceed nine thousand pounds per
square inch section. :.
srhe steel for the plates of the conduit shall
,mada Nv the basic or acid open hearth pro-
cess. If by the basic open hearth process the
| steel shall contain not more than three one
h,,ndredtbs per cent. of phosphorus and four
It, mar gsQnf of S1llnhIT III nv