The Jersey City news. (Jersey City [N.J.]) 1889-1906, 1897-10-30

containing openings for m~an-holes, plcw-
offs n air valves, and pieces Involving
any other kind Of boiler-makeTs WORK;
shall be manufactured in the best and
most approved manner. All openings TOT
man-holes, blow-offs, air valves, ere,
must be provided with suitable re-inforce,
rolled to the proper form in each cdse,noL
less than iye-sixteenths of an inch IN
thickness, n made of the same material
as the plates for the conduit.
Said rings must fit closely between the
exterior or the pipe and the fiange OF the
castings or forSings, and be held in place
by the rivets which pass through said
mango 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
oil the same done in the shop.
All riveIed seams and joints of every
description shall be thoroughly caulked,
both On the inside and outside of The pipe
III the best and most man.
ner for first class boiler work, while Tor
the necessary distance from all laps the
seams shall be both Clipped and caulked.
during tie manufacture OF the pipe,
sample lengths, TO be selected by the En-
gineerxas frequently as he may deem
necessary, shall be tested before or after
coating under a water pressure of two
;nunqred pounds to the square inch, n
shall be ABSOLUTELY tight under that pres
sure. IT 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
under a pressure OF 50 per cent. greater
than that to which it will be subjected
IN normal operation, and shall be abso-
lutely tight Under that pressure. All such
tests shall be made at the expense of the
contractor, and he shall furnish all the ne
cesSary appliances and labor for their per-
to the satisfaction of the En-
glneer. The pipes are to be thoroughly
coated by dipping twice in q bath of re-
hned asphaltum heated to a temperature
of 800 degrees Fahrenheit. The metal must
reach the same temperature at he bath
at its first dipping and may be heated
TO this temperature before dipping. The
coating must be durable, smooth, glossy,
hard, tough, perfectly waterproof and
strongly adhesive TO the metal. and must
show no tendency to flow when exposed
to the sun in summer or become so brit
tie as to scale in winter. All pipe must
be thoroughly covered and protected by
the coating. All possible care must be ex-
erciSed not to inJure the coating in han
ding the pipe. Whenever the coating is
injured in transportation or by handing.
asphaltum paint acceptable to the En-
gineer must be immediately applied 40
the injured portion. Such paint also
be applied TO all field rivets.
Other processes of coating or protect-
ing the pipe may be adopted, provided
that they are in all respects equal in
efficiency to the a~sphaltuni coating here
in specified and are acceptable to the
Engineer.
The pipe shah be constructed with
taper joints. the end Of each section
at each transverse riveted joint 10 be
inserted within the end of the next section
toward the Doint of delivery of water.
All longitudinal seams are to be double
riveted.
There shall be suitable mannoles locat-
ed at Intervals of about one thousand
feet on each pipe.
No pipe shall be covered IN until The
same shall have passed inspection with
in and without and all defects have been
remedied. Z
CONNECTIONS At POINTS OF De
LIVERY.
Proper connections must be made to
enable the contractor to deliver the water
into Bergen Reservoirs. also directly into
the high and low service pip systems
of the City. Such connections shall be
made in the most thorough and substan-
tiaI manner. Plans for this work must
be approved by the Engineer and the
work must be performed under ms SUI
peryision and to his entire satisfaction.
GATEHOUSES.
A gatehouse of brick or stone, with
Slate or tile roof, possessing two separate
water passages, each PROVIDED with prop
err screens, together with all necessary
gates or other ppuftenance must oe
placed TO control the flow from the res
ervoir supplying any steel pipe or ma
sorry conduit. Gatehouses of like mate
ria shall also be furnished at each point
where two parallel steel pipes are con-
nected, or where provision is made for
such connection, also at each gate OF
StOD-VdIVe on the mann COluull.
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 Bergen Res
eryoirs, with proper appprtenanees for
measuring, regulating the pressure OF and
TELEPHONE.
A telephone line shal be built connect
ing the points of delivery with the in
take or intakes of the conduits, and
equipped with all necessary instruments
and appurtenanees;
The sidewalks and arches Of all tun-
neIs shall consist of brickwork sixteen
inches in thickness 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 ce-
ment mortar, n the entire space be-
tween the sidewalks and the sides of the
excavation shall be filed with Rosendale
cement concrete up to the level of the
top of the arch. Above this the space
must be filled with suitable material,
carefully packed or rammed so as to
completely fill the space. Where the tun.
sound and solid rock, 1t may be leveled
up and smoothed and made uniform
throughout with Rosepdale cement con-
crete. surfaced with a layer two inches
thick of Portland cement mortar. Where
the tunnel is in earth or unsound ROCK
a brick invert, sixteen inches thick, shal
be laid at the bottom. If 1t shall be
necessary, in order to secure nrm 1ounda,
tion. the invert AL be laid upon a bed
Of concrete. Care shall be taken to leave
the interior surface of the tunnel smooth
and free from projections.
CAST IRON.
IF iron castings are used for eHluent
pipe. manholes. bloW-offs. Fair-valves and
other connections, the metal must be re-
melted in a cupola or air furnace. and
must be of pig-iron. without any adnllN-
lure of cinder iron or other inferior metal,
and shall be of a strong, tough charac-
fer. of an even grain, entirely free from
uncombined carbon when seen under the
microscope, and such as will bear satIs-
factory drilling and cutting.
The iron for the castings shai nave q
tensile strength OF at least seventeen
thousand pounds to the square inch.
Test bars. twenty-six (26l inches long
two (2) inches wide and one ID inch
thick, placed fiatwise and horizontal,
upon supports twenty-four ga inches
apart. shall bear a steadily increased
GENRE load IN to nineteen hundred Q9O01
pounds before breaking, and shall eXhlpit
a detection of not less mar nVe-sl4-
teenths of an inch.
The castings shall be perfectly free
from scoria, s~andholeS. a~lr-buDbieS ana
other defects imperfections:
The castings shall be perfectly cleaned
and no humps shall be left on the inner
or on the outer surface.
Every casting must be Thoroughly
dressed and made clean and free from
earth. sand and dust, which adheres to
the iron in the moulds; iron wire brushes
must be used, as well as softer brushes,
TO remove the loose dust. No acid or
other liquid shall be used in cleaning the
All castings, after being perfectly
cleaned. according to the specifications
and the directions of the Engineer. shall
be subjected to a careful and thorough