The Jersey City news. (Jersey City [N.J.]) 1889-1906, 1898-02-02

Riyet steel shall be soft and have a tenste
pounds per square Inch. with All elastic limit
Of not less than $4,000 pounds per square lnens
and with an elongation OF NOT less than rs
per cent. IN i test bar eight inches long be.
tween measuring points and fall diameter q
rlvet, and with a reduction Of cross secsl2Ial
area At the point of fracture of not less WAN
80 per cent,
The material shall also beyof such quality
as Will stand bending double and ftdt before
and aftei heating to a light yellow heat. anu
quenching In cold water. without sign o. q
ture on the convex surface OF the pend- Ing
quality of material of rivet rods and subsequelt
manufacture into rivets shall be SUCH tnat Inc
rivets shall be free frSrl checks or cracks. All
steel rivets not conforming to the above rs
quirements will be rejected.
All riyeting in the shop must be done Will
hot steel rivets by steam, compressed AT ~
hydraulic machinery. exertlng a slew pressu sur
and retaining IL sufficiently to perfectly FORM
the riyet heads before the metal loses its req
color.
All riyets when driven must fit the holes
completely. and have heads of such form and
size as will be directed by the Engineer.
Care must be taken to have the rlyets a.
thee right heat to produce the best anu ulvsl
solid work. and any riyet that may at any thne
or place be found defective or appear 70 nav
been oyerheated, shall be cut out and replaceu
az the contractors expense Dy Vls ni ns,,sT
sound and acceptable. All riyet heaas III IL
be perfect in form and truly concentric win
the shank or shaft.
The rivets used to connect the cylinders In
tne feld; for attaching castings, ETC, tq 'n ne
pipe, and for all work In the shop. shaii pe q
the quality described above, and they snail pc
driven in the best and most ~workmanilke man
ner in every respect. All provisions herein con.
tanned relating to riveting done in the snop
shan Also apply as far as practicable 70 rlyets
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 OF manu-
facture Of the sheets or plates until the coih-
pieted pipe IS dipped and coated.
At the factory the plates must be under
cover at the pipe shops and must be kept under
no way exposed to the weather or to moisture.
In cases Of accidental rusting the rust mus
pc removed from the plates before proceeuihs
with the manufacture of the pipe.
Where angles or curves occur in the align
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 clrcuiar
seams OF as many courses as may be needed
to produce the given total detection or curVa-
tnre 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
openings for man-hoies, blow-ofs and ar
valves, and pieces involving any other kind of
boiler-makers' work, shall be manufactured IN
the best and most approved manner. All open
ings for man-holes. blow-offs, air valves. etc,
must be provided with suitable enforcement
rings or plates, eut, punched and rolled1to the
proper form in each case. not less than nvse
sixteepths 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 hange 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 done
in the shop.
All riveted seams and joints of every descrip-
ton shall be thoroughly caulked. both on the
inside and outside of the pipe, in the best and
most workmanlike manner for first class boiler
work, while for the necessary distance from all
caulked.
During the mann sacture of the pipe sample
lengths, to be sele.sed by the Engineer as FREE
auently 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 tnat
pressure. If tested before the coating is APP
piled the pipe must be thoroughly oiled with
a coat of linseed oil.
The pipe when laid shall also be tested un-
der a pressure OF 50 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 me
expense of the contractor, and he shall furnish
performance to the satisfaction of the Engineer.
The pipes are to be Thoroughly coated by. dip
ping twice in a bath of refined asphaltum neat
ed to a temperature of 300 degrees Fahrenheit.
The metal must reach the same temperature
as the bath at its first dipping ana may on pc
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.
All pipe must be thoroughly covered and pro-
tected by the coating. Ali possible care must
be exercised not to injure the coating IN nam
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 neid
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
daliyery af 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
No pipe shall be covered in until the same
shall have passed inspection within and with
out and all defects have been remedled.
CONNECTIONS AT POINTS OF
Proper connections must be m made q to iote en Rere
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
sages. each provided with proper screens, to-
gether with all necessary gates or other ap-
purtenances, must be placed to control the
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 stop-vaive on the main conduit.
Suitable gatehouses of stone masonry, with
slate or the 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
noipts of delivery with the intake or intakes
of the conduits. and equipped with all neces-
sary Instruments and appurtenances.
HIS.
The sidewalks and arches of all tunnels shall
consist of ~brickwork sixteen inches in thick
ness where the turnel is in earth or very loose
rock twelve inches where In intermediate
rock. and eight inches in sound rock, laid in
cement mortar, and the entire space
c~ayation shall be filed with Rosendale cement
concrete up to the level of the top of the arch.
Above this the space must be filed with suit
able material, carefully packed or rammed
tunnel is in rock, if the bottom consists of
sound and solid rock, it may be leveied up and
smoothed and made uniform throughout with
Rosendale cement concrete, surfaced with a lay
or two inches thick of Portland cement NOR
tar Where the tunnel is in earth or uasound
rock a brick inyert, sixteen inches thick, shall
be laid at the bottom # it shall
tion. the inyert 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
rnsn-holes blow-offs, air-valves and other con-
nections. the metal must be rernelted in a Gu
without any admixture of cinder iron or other
inferior metal, and shall be of a strong tough
character. of an even grain, entirely free from
~uncombined carbon when seen under the mi.
scroscope, and Such as VIII Dear satisfactory
drilling and cutting.
The iron for the castings shall have a ten