The Jersey City news. (Jersey City [N.J.]) 1889-1906, 1898-01-22

with these specifications, before being put II
service, II the Engineer shall 50 direct; !.
thefe shall be a clear space around tn
water-line OF the reservoirs. and not less thar
sixty feet in width. and additional spaci
where Y may be needed, which Is 70 pc N
cluaeu IN the conveyance Of the reservoir site
10 the city. This requirement will not d
enforced for the entire water-line in case LAX
fopatcong or Greenwood Lake are offered a
reservoirs. provided that the bidder specific
IN MS bid what portions of the margins Q
those lakes he wishes excepted therefrom. an
PROVIDED further that he succeeds in prevent
ING harmful pollution of the water by a prope
exercise or the powers herein placed at nj
disposal, or by other means.
The depth of reservoirs shall in all cases .ex
coed eight feet below the full water leve
throughout seyepty-five per cent. of the en-
TIRE area or the reservoir.
Inc reservoir dams may be either of ma
sonfy or earth e-mbankments, as may be pes
suited to the different localities. They shal
pc OF suf1cient height and strength, or tn
best adapted shape, and built in the mos
substantial and thorough manner, on properly
nuent pipes. gatehouses, with gate-chamber
and vaults, gates, valves, screens, and al
otner appliances and appurtenances proper TO
the purpose intended, with the necessar,
slope walls, ~by-wash, waste-weirs, blow-offs
dralns and waste pipes, and they shall d.
provided witt such sufficient space or area 0
land along the foot and side as may be nee
essafy 10 protect the same, and shall be fence
where required. In case there should not ex
list a public road or reads leading TO and per
hitting access to the reservoirs, where locat
ed, necessary lands and right of way shall
pc acquired and furnished to give such &C
cess.
CONDUIT CAPACITY.
The carrying capacity Of all riveted steel con
duits VIII be determined by the Kutter Tor
sixteen thousandths). The smallest interlol
diameter of the shell as constructed shall b'
considered to be the diameter of the pipe
The carrying capacity of all masonry con
Quits or tunnels will be determined by tn
kutter formula taking the eo-eficient N Z
equal Ola fourteen thousandths) for briel
WORK. COnfTafa ~. aSi1a1r masonry lining. AMI
OBS eighteen thousandths) for rubble lining
All such masonry tunnels or conduits shall pt
capable of delivering the full supply called fol
when discharging with a free upper surface
the water surface not to be higher than ont
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 ee
walton of the available capacity of the reser
voir or reservoirs at the points of intake, ant
the height or elevation of delivery at thu
points of delivery designated in these specif'
RIGHT OF A
The right of way for conduits shall in NJ
case be less than forty feet in width. ane
shall be sufficient to enable the City in east
of purchase fully to protect the pipe or pipes
laid therein, and to maintain and repair tn
same. The right of way shall extend from TIN
of intake to the points of delivery. Each con
duit shall be constructed on one and the same
occupy more thereof than is necessary. Where
the City furnishes fight of way over land
which it now owns. the conduits shall pc lait
on that part thereof designated by the Engi
LAYING OF CONDUITs.
The conduits shall be laid in the best anc
most thorough manner on true grade lines OF
a bed or foundation properly prepared, ant
where necessary to procure such foundation OF
piling- The curvature of the pipe shall IN ne
case be sharper than ten degrees Cast lrof
pipe. with flexible joints or other devices &C
eeptable 70 the Engineer, may be USED s a.
the stream exceeds % feet in width, IT mus
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 tor
of the pipe shall be covered by at least three
feet of earth. and the pipes shall be SO place.
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 WITT
satisfactory earth, sand or gravel, so that !
shall very here have at least three feet o.
such covering. In all such cases, and on al
embankmentS, the contractor must SOW grass
seed, or sod. or otherwise protect sald EN-
banknnents. 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 u
be connected at proper points and in suci
manner that any section of either pipe be
tween such connections may be shut off ane
emptied in order to be cleaned, inspected ane
repaired without interfering with the flow Of
water in any of the other sections. Where
but one pipe is laid, under Plans 3 or Z
MOTIONS with a second pipe, so that said con
nections can be made without interfering witt
the flow of water in the first pipe. Such {
Connection shah be made or provided for i'm
mediately below any intake dams, also on tht
river bank nearest the intake at each point OF
crossing of the Passaic and Hackensack XIV
ers. on the opposite bank at such crossing:
a single gate must be placed on each conduit
Other like connections must also be made o.
provided for. 50 that there shall nowhere b
a stretch exceeding five miles in length with
out such connections or provision for such 9
connection.
Gates or stop valves are to be furnished ant
so placed as to divide. each pipe into approx
matelv one and one-half mile sections, ant
preferably are to be located on submits. Al
gates are to be iron-bodied, bronze-mounted
square inch. and are to be united to the pipt
lines by Hanged Joints. All such gates o.
stop valves and all other fittings used on tn
conduits shall be equally capable With tn
conduit adjacent thereto to resist any pres
sures or strains to which they may be sub
jected.
the valve stem. shall be composed of eighty
five per cent. copper, ten per cent. tin, ant
strength of not less than %, 900 pounds pei
square inch, with five per cent. elongation il
eight diarneters and five per cent. reduction
of area at breaking point. The valve guides
must be straight and smooth, All face joint:
must be plain. true and smooth, so as to max
perfectly watertight joints. with a very thir
be made of bronze, having a tensile strength
Of not less than 80, 600 pounds per square inch
and the screw threads thereon shall be Gu
accurately to work true and smooth through
out the entire lift of the valve. On the up
off shall be placed and interlocked with thu
stop valve by proper device, SO that the blow
off must be open before the main valve car
De AIR VALVES.
Every summit on the pipe line shall b'
provided with an air valve Of the most ap
.,o-a1 ne torn, and of a size nrnDArlV nrOnOr
toned to the duty 1t has to perform. 1t shall
be provided with a stop valve bolted to {
Hanged casting or forging riveted upon thu
TOP of the pipe. Similar air valves shall alss
be placed on each side of every gate. The,
shall be properly ineased and protected IRON
but so arranged as to be readily accessible fol
inspection or testing.
BLOW-OFFS.
In ali depressions blow-offs shall be located
for elmptying the pipe. They shall be pro
vided with two S-ineh valves bolted together
and to a Hanged casting or forging rivetee
to have the foundation for both pipe and blow
off secure from risk of unequal settlement
An iron pipe shall be provided to carry thu
water from the blow-off to a natural water
course or ditch.
STEEL PIPE,
The plates used in the construction of tn.
coeduits shall in no case be less than one
quarter Of an inch in thickness, and the work
ing strain due to the static head of water tt
which they will be subjected shall, under M
circumstances, exceed mine thousand pounds pc
square inch section.
The steel for the plates of the conduit shall
he If the class called soft" and shall b.
made by the basic or acid open hearth pro
cess. If by the basic open hearth process tn,
Steel shall contain not more than three one
hundredtlls per cent. of phosphorus and foul
Observation-Disclosures per cent. of sulphur. If b,
he acid open hearth process, the steel shall
Contain not more than seven and one-hal
one-hundredths per cent. OF phosphorus ans
fonr one-hundredths per cent. of sulphur. TIL,
amount Of manganese and carbon to be il
such quantities as shall produce the best re