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

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mems. when taken at random as aforesaid
from the finished product Of any heat Or
stmelt, :" TO conform u the above requirements.
will be sufficient cause for the rejection of the
entire product Of ouch heat" OF melt.
The sheets Or plates shall be free from M iai q
to the required gauge for thickness on the
edges.
Rivet steel shall be soft and have d tensile
strength between The limits OF $4,000 ana 4, 9qv
7 pounds per square inch. with an elastic iln,it
of not less than 10000 pounds per square INCH
and with an elongation Of not less than rs
per cent. In a Lest bar eight inches long pc
Tween rivet a meas SUR, points and 4 fu sro a,as sectional
area at the point OF fracture Of not less ehan
50 per cent. ...,
as Will stand bending double and mai petors
and after heating to a light yellow neal on
quenching in cold wafer, without sign OF ~
ture ON the convex surface of the bend. Inc
quality of material. of rivet rods and SUBSEQUENT
edges Of heads. Of properly heated ana .rlv sn
rivets shall be free from checks or cracks. All
steel rivets not conforming to the ABOVE re-
quirements win be rejected. -
All riveting in the shop must be done with
not steel riyets by steam, compressed a. s, =
hydraulic machinery. %exerting a slow pres s'rm
and retaining it sufficiently to pertectiy foln.
the rivet heads before the metal loses us req
color.
All rivets when driven must fit the holes
completely, and have heads OF sucn lorni anu
Care must be taken TO have the rivets at
the right heat to produce the best ana mos
solid work, and any rivet that may at any time
been overheated. shall be cut out and replaced
at the contractors expense by enc Wnie M sf
be perfect in form and truly concentric win
the shank or shaft.
the field. for attaching castings, etc, 70 ths
pipe, and for all work in the shop. shall be OF
driven in the best and most workmanlike man
ner in every respect. All provisions herein con-
ssap a, reia aanfv to to Fay tn nra aene II the 10 ri snsp
driven in the field or along the line OF conduit.
All plates and rivets must be free from rust
and kept under cover from the time or manu-
facture of the sheets or plates until the COM
pleted pipe is dipped and coated.
At the factory the plates must be unaer
cover at the pipe shops and must be kept under
roof and cover until ready for shipment and IN
no way exposed to the weather or to moisture;
In cases of accidental rusting the rust must
be removed from the plates before proceeding
Where angles or curves occur in the aign-
ment and grade of the conduit, the Plates must
be cut and punched to the required ines Tor
forming a slight oblique angle at the circuiar
seams of as many courses as may be needed
to produce the given total detection or eurya-
ture in eacA locality. Curves shall IN no case
exceed ten degrees of curvature.
All other special pieces required for the con-
openings for man-hoies, blow-offs and air
valves, and pieces involving any other klnq q
b~oiler-makers' work, shah be manufacture IN
ings for man-holes, b.ow-offs, air valves, etc,
must be provided with suitable re-inforcement
proper form in each case, not less than five
sixteenths of an inch in thickness, and made
of the same material as the plates for the con-
duit.
Said rings must fit closely between the ex-
terror OF the pipe and the fange OF the caSs -
rfvets which pass through said fange ana the
conduit.
etc, will be cut and rivet holes punched in the
pipe shop and the riyeting of the same done
All riveted seams and joints of every deserip-
ton shall be thoroughly eaulked, both on the
most workmanlike manner for first class boiler
work, while for the necessary distance from all
laps the seams shall be both Clipped and
caulked.
During the manufacture of the pipe sample
lengths, to be selected by the. Engineer as fire.
quentlyeas he may deem necessary, shall be
tested before or after coating under a water
pressure of two hundred pounds to the square
pressure. If tested before the coating is APP
pied the pipe must be thoroughly oiled with
a coat of linseed oil.
der a pressure of 80 per cent. greater than that
to which it will be subjected in normal oper-
pressure. Al such tess shall be made at the
expense of the Contractor, and he shall. furnish
all the necessary appliances and labor for their
Performance to the satisfaction of the Engineer.
The pipes are to be thorougly coated by mp
ping twice in a bath Of refined asphaitum neat-
ed TO a temperature of 800 degrees Fahernheit.
The metal must rSnch the same temperature
as the bath at its first dipping and may pc
! heated to this temperature before dipping. Ihe
coating must be durable, smooth, glossy, hard,
tough, perfectly waterproof and strongly ad-
hesive to the metal. and must show no ten
dency to flow when exposed to the sun in sum
mer or bee 5me so brittle as to scale in winter
All pipe must be thoroughly covered ana Pre-
be exercised not to injure the coating IN nan
ding the pipe. Whenever the coating is in
phaItum paint acceptable to the Engineer must
be Immediately applied to the injured portion:
Such paint must also be applied to all heid
rivets.,
Other processes of coating or protecting the
pipe may be adopted, provided that they are
in all respects equal in efficiency to the as
phaltum coating herein specified and are ac-
ceptable to the Engineer.
The pipe shall be constructed with taper
Joints, the end of each section at each trans
verse riveted joint to be inserted within the
end of the next section toward the point of
There shan be suitable man-hoies located at
intervals of about one thousand feet on each
No pipe shall be covered in until the same
shall have passed inspection within and with
out and all defects have beeniremedied
I CONNECTIONS AT POINTS OF DELIVERY.
Proper connections must be made to enable
the contractor to deliver the water into Ber-
gen Reservoirs, also directly into the high and
low service pipe systems. Of the City. such
connectionsys shall be made in the most thorough
and substantial manner. Plans for this work
must be approved by the Engineer and the
work must be performed under his supervision
and to his entire satisfaction.
GATEHOUSES.
A gatehouse of brick or stone, with slate or
u f1iP moo DOSSeSSllSL w L NWdLtI q
sages. each provided with proper screens, to-
gether with all necessary gates or other APP
purtenances, must be placed to control the
flow from the reservoir supplying any steel pipe
or masonry conduit. Gatehouses of like mate
rial shall also be furnished at each point where
two parallel steel pipes are connected, or where
provision is made for such connection, also at
each gate or sstop-valve on the main conduit.
suitable gatehouseS of stone masonry, with
slate or tile roofs, of attractive architecture and
appropriate to their surroundings, shall be built
at the points of delivery at Belleville and Ber-
pan Reservoirs. with proper appurtenances for
measuring, regulating the pressure of and. de-
lvering the water.
TELEPHONE.
A telephone line shall be built connecting the
points of delivery with the intake or intakes
Of the conduits. and equipped with all neces-
sary instruments and appurtenances.
TUNNELS.
The sidewalks and arches of all tunnels shall
consist of brickwork sixteen inches in thick
ness where the tunnel is In earth or very loose
rock and eight inches in sound rock, laid in
Portland cement mortar, and the entire space
between the sidewalks and the sides of the ex-
/ cavafion shall be filled with Rosendale cement
1 concrete up to the level of the top of the arch.
Above this the space must. be filled with suit
able material, carefully packed or rammed
so as to completely fill the. space Where the
tunnel is in rock, If the. bottom consists of
sound and solid rock, it may be leveled up and
emoothed and made uniform throughout with
Rosendale cement concrete, surfaced with a lay
er two inches thick of Portland cement NOR
tar. Where the tunnel is in earth or unsound
rock a brick invert, sixteen inches thick, shall
be laid at the bottom. If it shall
he nacessarv. in order to secure firm founda-
tfon. the invert shall be laid upon a bed of
concrete. Care shall be taken to leave the in
terror surface Of the tunnel smooth and free
from projections.