The Jersey City news. (Jersey City [N.J.]) 1889-1906, 1898-08-04

L Hey Shall 0t VI ~
strength. of the best adapted shape, n
built in the most substantial and tnorougn
MANNER on properly prepared f~onnoaaons.
houses, with gate-chambers. and vauits.
gates, valves, screens, and all other ap-
~pliances and appurtenances proper lor lns
purpose intended with the necessary
slope walls. by-wash, waste-Weirss blow
offs, drains and waste pipes, ana they
shall be provided with such suIlclenl
space or area Of land along the foot and
side as MAJ be necessary to protect lne
same, and shall be fenced where reqnlrso.
In case there should not exist q pupllc
road, or roads leading to and permllIlng
access no the reservoirs, where ioeaSea;
necessary lands and right of way shall
be acquired and furnished to give sucn
CONDUIT CAPACITY. :,
The carrying capacity Of all riveted steel
conduits will be determined BY the AuI-
Ter formula, taking the co-eficient NO
equal .0l6 (sixteen-thousandths)., The
smallest interior diameter OF the she'll as
constructed shall be considered to be the
The carrying CAPACITY of all masonry
conduit or tunnels will be determined py
the Kutter formula taking the ~co.eLaelss nr
brick work, concrete or ashlar masonry
lining, and .o1S eighteen thousandths) for
rubbie lining; All such masonry ianneas
the full supply called for when discharg-
ing with a free upper surface the water
surface. not to be higher than n 1901
below the top of the arch.
The head to be used for computing the
capacity of the conduits shall be the, DIFF
ference between the low water Level Or
the bottom elevation of the available
capacity of the reservoir or reservoirs at
the points of intake. and the helgnl or
elevation of delivery at the points 81 oe-
livery designated in these Speclncatioiis.
RIGHT OF WAY.
The right of way for conduits snaL N
no case be less than forty feet in WIDTH,
and shall be sufficient f. enable the G a5s
and repair the same. The right OF way
shall extend from the reservoir or reser-
voirs at the point or points OF intake 70
the points OF delivery. Each CONDUIT snaii
be constructed on one and the same slQe
thereof throughout and SO as not 70 &c
Where the City furnishes right Of way
over lands which 1t now owns, the con-
duits shall be laid on thai part Thereon
designated by the Engineer.
LAYING OF CONDUITS.
The nduits shall be laid IN the best
and most thorough manner on true grado
lines On a bed or properly pre-
pared. and where necessary TO procure
such foundation on piling. The curvature
of the pipe shall in mo case be sharper
than ten degrees. Cast iron pipe with
flexible joints or other devices accept
aide to the Engineer may be USED a
stream crossings. If steel pipe is used
where the stream exceeds Is feet in width:
it must have a thickness o~ne-quarter OF
an inch greater than that required for the
same pressure elsewhere. 80
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 as to bring all she
lcn.itudinal 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
surface of the ground, but must be coy-
cred with satisfactory earth, sand or
~~o rnA1 c0 thnf If Gha11 nNRrV W ere nave
at least three feet of such covering. IN
all such cases, and on all embankmentS
the contractor must sow grass SEED, Ct
sod, or otherwise protect said embanK-
rlents. Necessary culverts and other CON
ssrEct.ons must be made to secure ire
proper drainage of the adjoining land.
CONNECTIONS.
If two steel pipes are laid they are
10 be connected at proper points IND in
such manner that any section of either
pipe between such connections may PC
shu. off or emptied in order to pc
cleaned, inspected and repaired without
interfering with the flow of water in any
oe the other sections. If but one pipe is
laid, proper provisions must be made
for such connections with a second pipe.
s., that said connections; can pc mane
without interfering with the flow OF water
in the first pipe. Such a connection shall
be made or provided for immediately be-
low any intake DAMS, also on the river
bank nearest the intake at each point OF
IUS ltEL u Liz L Sfoelt et<t1
Rivers. On the opposite bank at slcn
crossings a single gate must be placed en-
each ccnduit. Other like connections
must also be made or provided Tor SO thas
there shall nowhere be a stretch exceed
ing five miles in length without such con-
nectIcns or provision for such a connec-
ton.
Gates or stop valves are to be furnished
and so placed as to divide each pipe mo
approximately one and one-half mile Sec
tons. and preferably are to be located on
SUBMITS. All gates are to be iron-bodled,
bronze-mounted double gates, tested TO
300 pounds pressure per square inch, and
are to be united to the pipe lines by
Ranged joints. All such gates or stop
valves and all other fittings used on the
cunduits shall be equally capable with the
conduit adjacent thereto to resist any
pressures or strains to which they may
be subjected.
All the composition metal used, except
ing the valve stem, shall be composed OF
eigkty-five per cent. copper, ten per cent;
tin arc five per cent. spelter, ana snali
lave a tensile strength of not less mar
% 900 pounds per square inch, with hve per
FIVE per cent. reduction Of area at break
ing point. The valve guides must be
straight and smooth. All face joints
must be plain, true ana snootn, SO as 70
very thin layer of pure lead cement. valve
stems shall be made of bronze, having
a tensile strength of not less than $4,000
pounds per square inch. and the scrsw
threads thereon shall be cut accurately
! to work true and smooth throughout The
entire lift of the valve. On the upstream
side of each main stop valve a blow-off
shall be placed and interlocked with the
sian valve by proper device, so that the
blow off must be open before the main
| valve can be closed.
AIR VALVES,
Every summit or the pipe line snail re
| provided with an air valve of the most
| approved pattern and of a size properly
| prorortioned to the duty it has to per-
form and shall be provided with a step
| valve bolted to a Hanged casting or forg-
ing riyeted upon the top of the pre-.
Similar air valves shall also be placed
| on each side of every gate They shaii
be properly encased and protected from
| possibility of damage from frost or mis-
chief. but so arranged as to pc reaolty
accessible for Inspection or testing.
BLOW-OFFS.
In all depressions blow-ohs shall ne
| located for emptying the pipe. They shall
be provided with two 8-inch valves boited
| together and to a Hanged casting or forg-
ing rjS eted upon the pipe. Particular
| care must be taken to have the
for both pip 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.
The plates used In the construction OF
the conduits sha in no case be less thar
-one-auarter of an inch in ana
| the working strain due to the static head
of water to which they Will be subjected
| shall. under no circumstances, exceed
nine thousand pounds per square incl