The Jersey City news. (Jersey City [N.J.]) 1889-1906, 1898-01-19

The sheets or plates shall be free from lam
inatio1 and surface defects, and be fully up
e the required gauge ~ thickness on the
edens.
strength between the limits of 50, 600 and 5S.oVt
pounds per square inch, with an elastic limit
Of not less thar. g, 900 pounds per square incn;;
ana with an seI9ngation of not less imam 20
per cent. in d test bar eight inches long pes
tween measuring points and fuii diai s Y
area at the point Of fracture Of not less tnah
80 per cent.
The material shall also be of such quality
as will stand bending double and nat before
and after heating to a light yellow heat, anu
quenching in cold water, without sign OF irwc s
ture on the convex surfade of the bend. Inc
quality of material of rivet rods and sursequehe
manufacture into rivets shall be such tnat INC
edges Of heads, Of properly heated and riven
rivets shalt be free from checks or cracks. All
steel rivets not conforming to the ABOVE (e
~quirements will be rejected. ~
All riveting in the shop must be done viii
hot steel rivets by steam, compressed ar OF
hydraulic machinery, exerting a SLOW pressuro
and retaining it sufficiently to perfectly srorhn
the rivet heads before the metal loses It's reu
color.
All rivets when driven must Mt the hoies
completely, and have heads of such form aiio
size as will be directed by the Engineer. -
Care must be taken to have the rayets a.
the right heat to produce the best ana iao se
solid work, and any rivet that may at any tinis
or place be found defective or appear 70 nav
been overheated, shall be cut out and replaced
sound and acceptable. All rivet neaos NUS nus
be perfect in form and truly concentrie win
The rivets used to connect the cylinders IN
the field. for attaching castings, etc, 70 ~
pipe, and for all work in the shop, shall pc ~
the quality described above, and they shall pc
driven in the best and most workmanilRe man-
ner in every respect. All provisions herein con,
tanned relating to riveting done m the slop
shall also apply as far as practicable 10 riVstS
driven in the field or along the line OF CONDUIT.
All plates and rivets must be free from rusl
and kept under cover from the time OF manu-
facture of the sheets or plates until the COM
pleted pipe is dipped and coated.
~ AT the factory tha Mates must De
cover at the pipe shops and must be kept unoer
roof and cover until ready for shipment and N
In cases of accidental rusting the rust must
be removed from the plates before proceeding
with the manufacture of the pipe.
Where angles or curves occur in the aIlgn.
ment and grade of the conduit, the plates must
be cut and punched to the required lines ior
forming a slight oblique angle at the circu5as
seams of as many courses as may be needed
to produce the given total detection or curva-
ture in each locality. Curves shall in no case
exceed ten degrees of curvature.
All other special pieces required for the con-
duit, such as closing pieces, sections containing
valves, and pieces involving any other KIND OF
b~oiler-makers' work, shall be manufactured IN
the best and most approved manner. An OPEN
ings for man-holes, blow-offs, air valves, ETC.,
must be provided with suitable reinforcement
rings or plates, cut, punched and rolled to the
proper form in each case, not less than hve-
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 cast
ings or forgings, and be held in place by the
rivets which pass through said fange and the
conduit.
Openings for man-holes, blow-offs, air valves,
etc., will be cut and rivet holes punched in the
pipe shop and the riveting of the same Zone
in the shop.
ton shall be thoroughly caulked, both on the
inside and outside of the pipe, in the best and
work, while for the necessary distance from all
laps the seams shall be both Clipped ana
caulked.
During the manufacture of the pipe sample
lengths, to be selected by the Engineer as fire.
quently as he may deem necessary, shall be
tested before or after coating under a water
pressure of two hundred pounds to the square
inch, and shall be absolutely tight under that
pressure. If tested before the coating is ap-
Piled the pipe must be thoroughly oiled with
a coat of linseed oil.
The pipe when laid shall also be tested I'M
der a pressure of 30 per cent. greater than that
to which it will be subjected in normal oper-
alton, and shall be absolutely tight under that
pressure. All such tests 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 Thoroughly coated by. dip
ping twice in a bath of refined asphaltum heat
ed to a temperature of 800 degrees Fahernhelt.
The metal must reach the same temperature
as the bath at its first dipping and may be
heated to this temperature before dipping. Inc
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 become so brittle as to scale in winter.
tected by the coating. All possible care must
be exercised not to injure the coating in han
ding the pipe. Whenever the coating IS IN
jured in transportation or by handling, as,
phaltum paint acceptable TO the Engineer must
be Immediately applied to the injured portion;
Such paint must also be applied to all heio
Other processes of coating or protecting the
pipe may be adopted, provided that they are
in ali respects equal in efficiency to the as
phaltum Coating herein specified and are ac-
ceptable to the Engineer.
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
delivery of water. All longitudinal seams are
to be double riveted.
There shall be suitable man-holes located at
intervals of about one thousand feet on each
pipe
shall have passed inspection within and with
out and all defects have been remedied.
CONNECTIONS AT POINTS OF DELIVERY.
Proper connections must be made to enable
the contractor to deliver the water into Der.
gen Reservoirs, also directly into the high and
low service pipe systems of the City. Such
connections 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
tile roof. possessing two separate water pas
gether with all necessary gates or other ap-
purtenances, must be placed to control the
1ow 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 al
each gate or stop-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-
gen Reservoirs, with proper appurtenances for
measuring, regulating the pressure of and de-
livering the water.
- TELEPHONE.
A telephone line shall be built connecting the
nojnts 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. twelve inches where in intermediate
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.
cayation shall be filled with Rosendale cement
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
| smoothed and made uniform throughout with
Rosendale cement concrete, surfaced with q lay
er two inches thick of Portland cement NOR.
| tar. Where the tunnel is in earth or unsound
be laid at the bottom. If it shall
he necessary, in order to secure firm founda-
ton, 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.
CAST IRON.
IF iron castings are used for effluent pipe
man-holes, blow-offs, air-valves and other con.
nola or air furnace, and must be of pig-iron
| without any admixture of cinder iron or other