The Jersey City news. (Jersey City [N.J.]) 1889-1906, 1898-01-26

service. II the Engineer shah 50 direct; s
There shall be a clear space around me
sixty feet In width. and additional space
where it may be needed, which is 70 pc an
s 81 sSs y r, the conveyance rs, Of aie re wil, not s'' be
enforced for the entire water-line in case Lake
Hopatcone Or Greenwood Lake are offered az
in his bid what portions Of the margins o.
those lakes he wishes excepted therefrom, ana
ing harmful pollution OF the water by a proper
exercise of the powers herein placed at ms
disposal, or by other means;
Ihe depth Of reservoirs shall in all cases eA-
coed eight feet bGow the full water level
throughout seventyAive per cent. of the en-
tire area of the reservoir.
The reservoir dams may be either OF ma
sonfy or Garth entertainments, as may pc pest
suited to the different localities. They shall
be OF sufficient height and strength, OIL the
best adapted shape, and built in the most
substantial and thorough manner, on properly
fluent pipes, gatehouses. with gate-champers
and vaults, gates. valves. screens, and an
the purpose intended. with the necessary
slope walls, ~by-wash. waste-weirs, biow,ofs.
drains 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 to protect the same, and shall be FENCED
where required. In case there should not ex-
list a public road or roads leading to and per-
hitting access to the reservoirs, where locat,
ed, necessary lands and eight OF way snail
cess.
CONDUIT CAPACITY.
The carrying capacity OF all riveted steel CON
mula, taking the co-efiicient N to equal .oIo
Sixteen thousandths). The smallest interior
diameter of the shell as constructed shall pc
considered to be the diameter of the pipe.
The carrying capacity of all masonry con
duits or tunnels will be determined py tne
kutter formula, taking the co-effic1ent NO
equal OLA Fourteen 'thousandths) for phcR
work, concrete or ashlar masonry lining, ana
Al such masonry tunnels or conduits shall pc
capable of delivering the full supply called TOT
the wa ulsrn slgfaes w mnt to 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 di1ference
between the low water level, or the bottom ele-
walton Of the available capacity Of the reser,
the height or elevation of delivery at the
points of delivery designated in these specin-
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
reservoir or reservoirs at the point or points
of intake-to the points of delivery. Eacn con-
duit shall be constructed on one and the same
side thereof throughout. and SO as not 70
occupy more thereof than is necessary Wne.e
the City furnishes right Of way over iands
which it now owns. the conduits shall be laid
on that part thereof designated by the Engi-
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
piling. The curvature of the pipe shall IN ne
case be sharper than ten degrees. CAST iron
ceptable to the Engineer, may be used at
stream crossings. If steel pipe Is used wners
the stream exceeds % feet IN width, II mus
have a thickness one-quarter OF an men 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 so placed
as to bring all the longitudinai seams on Inc
Where the pipe is to be laid across rock
swamp or meadow, it may be above the sur,
| satisfactory earth, sand or gravel, so that II
shall everywhere have at least three 1eet oi
sucn covering. In all such ca r1,,st a sow n grass s.
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 te
manner that any section of either pipe be,
tween such connections may be shut OFF ane
sepajred IN mit Grasf i iote 1s Ginshs With aAf the aow Of
/ water in any of the other sections. Where
but one pipe is laid, under Pans % or =
| proper provisions must be made for such con
~nections with a second pipe, so that said con.
! uections can be made without interfering witt
the flow of water in the first-pipe., Sueh 9
connection shall be made~or provided for i'm
mediately below any intake dams, also on INT
river bank nearest the intake At eaen po1ne o.
crossing of the Passaic and Hackensach RiV.
ers. On the opposite bank at such CROSSINGS
a single gate must be placed on each CONDUIT
provided for, so that there shall nowhere bf
a stretch exceeding five miles i'm length win.
out such connections or provision for sueh Z
cohhee'''n, GATES.
Gates or stop valves are to be furnished am
so placed as to divide each pipe into approx
mateIv@ one and one-half mile sections, AM
preferably are to be located on submits. Al
gates are to be iron-bodied, b~ronze-moupted
double gates. tested to 800 pounds pressure pc
square inch, and are to be united to the pip
stop valves and ali other fittings used on thu
conduits shall be equally capable with TN
conduit adjacent thereto to resist any pres
sures or strains TO which they may be SUD
All the composition metal used, excepting
the valve stem, shall be composed of eighty
Ave per cent. copper, ten per cent. tin, an
five per cent. spelter, and shall have q tensli
strer 9Th Of not less than ~" ponna ion pc +
eight diameters and five per cent. reduction
of area at breaking point the valve guiae
must be straight and smooth. All race JOINT
must be plain, true and smooth, so as to max
perfectly wateitight joints, with a very TIM
LAYER Of pure lead cement. Valve stems shat
he made of bronze, having a tensile strength
of not less than 0,000 pounds per square men
and the screw threads thereon shall pc , Gu y
/ aCCuIdttlt = "oA1
out the entire lift of the valve On the up
stream side of each main stop valve a blow
off shall be placed and interloeked with tn
off must be open before the main valve cal
We ~ AIR VALVES.
Every summit on the pipe line shall b
nrovdded with an air valve of the most ap
proved pattern and of a size properly proper
tioned to the duty it has to perform. 1t shal
be provided with a stop valve bolted to
Hanged casting or forging riveted upon IN
TON of the pipe. Similar air valves shall ais
he placed on each side of every gate. The
possibility of damage from frost or mischief
but so arranged as to be readily accessible 10
inspection or testing.
BLOW-OFFS.
In all depressions blow-offs shall be locate
for emptying the pipe. They shall be pre-
vided with two S-inch valves bolted togethe
and TO a Hanged casting or forging rivete
upon the pipe. Particular care must be take
tn have the foundation for both pipe and blow
off secure from risk of unequal settlements
An iron pipe shall be provided to carry tn
water from the blow-off to a natural water
course or ditch.
STEEL PIPE.
The plates used in the construction of tn
corduits shall in no case be less than one
ana 1ter of an inch in thickness, and the work
ing strain due to the static head OF water 1
witch they will be subjected shall, under n
circumstances, exceed nine thousand pounds pc
suuare inch section.
-. ~ the class called soft and shall b
,sade by the basic or acid open hearth pre-
Cos II by the basic open hearth process til
stari shall contain not more than three one
hundredtlts per cent. of phosphorus and fou
nne-hundrdeths per cent. of sulphur. If b
tte acid open hearth process, the steel sha
contain not more tnan seven anu enema
eanr one-hundredths per cent. OF sulphur. TIL
an,aunf Of manganese and carbon to be
a.ah Quantities as shall produce the best ri
1rt.a 4opciIa strength of the Sfapl Sha