The Jersey City news. (Jersey City [N.J.]) 1889-1906, 1898-08-04

QQdIleIS OK d4 HIGH Ill QidluCtGks oP1Nc2
two inches between centres, and one and
ne-half inches from the edges, shall be
punched, and then enlarged by blows
from a sledge hammer upon a drifting
pin, until said holes are at least one and
~one-quarter inches in diameter, without
causing any cracks; such enlargemenls
TO be made when the steel is cold,
The sheets or plates must also admit, OF
cold ~hamInering or soaring to a fine edge
at the laps without cracking. and the
test pieces must furthermore stand sucn
may suffice to exhibit fully the temper
soundness and fitness for use of the ma
terial. The failure Of said test specimens.
when taken at random as aforesaid from
melt" to conform to the above require
ments. will be sufficient cause for the
rejection Of the entire Ire product OF s uen
shall be free from Elimination and surface
defects. and be fully up to the required
gauge for thickness on the edges.
Rivet steel shall be soft and have a
tensile strength between the limits OF 50,-
900 and IS, 600 pounds per square inch, with
an elastic limit of not less than 30.,o0u
pounds per square inch, and with an elon-
cation Of not less thar rs per cent. in a
test bar eight inches long between meas
uring points and full diameter Of rivet;
and with a reduction of cross sectional
area at the point of fracture OF not less
than so per cent.
The material shall also be of such quail
ity as will stand bending double and nat
r DS1OEG aflQ dlltI tlitS w q 1911 -
low heat, and quenching in cold water,
without sign of fracture on the convex
surface of the bend. The quality Of ma
terial Of rivet rods and s~ubsequent man.
ufacture into riyets shall be such that
the edges of heads, of properly heated
and driven rivets shall be free from
checks or cracks. All steel rivets not
conforming to the above requirements
will be rejected.
All riveting in the shop must be done
with hot steel rivets by steam, COM
--~--. = = - - a - --L n~n.f-
ing a slow pressure and retaining 1t suffi-
GENTLY to perfectly form the rivet heads
before the metal loses its red color.
All rivets 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 rivets
at the right heat to produce the best and
at any time or place be ound defective
or appear to have been overheated, shall
be cut out and replaced at the contrac--
acceptable. Ali rlyet heads must be per
feet In form and truly c~oncentric with the
shank or shaft.
in the field, for attaching castings, etc.,
to the pipe, and for all work in the shop,
shall be of the quality described above;
and they shall be driven in the best and
most w-orkmanlike manner in every re-
spect. All provisions herein contained re-
lating to riveting done in the shop. shaii
also apply as far as practicable to rivets
driven in the field or along the linz OF
conduit.
All plates and rivets must be free from
rust and kept under cover from the time
of manufacture OF the sheets or plates
until the completed pipe is dipped and
coated.
At the factory the plates must be under
cover at the pipe shops and must be kept
under roof and cover until ready for ship
ment and in no way exposed to the
weather or to moisture. In cases OF ac-
ef2 w q 4 r11cff,1c~ fhA r1cf m1Sf hal re-
moved from the plates before proceeding
with the manufacture of the pipe.
Where angles or curves occur n the
alignment and grade of the conduit the
plates must be cut and punched to the re-
quired lines for forming a slight oblique
angle at the circular seams OF as many
courses as may be needed to produce the
given total detection or curvature In each
locality. Curves shall in no case exceed
ten degrees of curvature.
All other special pieces required for the
conduit such as closing pieces. sections
containing openings for man-holes, blow
offs and air valves, and pieces involving
any other kind of boiler-makers' work;
shall be manufactured in the best and
most approved manner. All openings for
man-holes. blow-offs air valves, etc,
ment rings or plates, cut, punched ana
rolled to the proper form in each case. not
less than fve-sixteenths of an inch n
thickness. and made of the same material
as the plates for the conduit.
Said rings must tit closely between the
exterior of the pipe and the fiange OF the
castings or ~forgings, and be held In place
by the rivets which pass through said
fange and the conduit.
Openings fbr 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
description shall be thoroughly. caulked,
both on the aside and outside Of the pipe
In the best and most -workmanlike man
ner for first class boiler work, while for
49, 1f4%a. 1AaM fraVA all n nc n
seams shall be both Clipped and caulked.
During the manufacture of the pipe,
sample lengths. to be selected by the En-
necessary, shall be tested before or after
coating under a water pressure OF two
hundred pounds to the square inch, and
sure. 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
under a pressure. of 80 per cent. greater
than thai to which it will be subjected
in normal operation, and shall be, ,abso-
tests shall be made at the expense OF the
contractor, and he shall furnish all the ne
cessary appliances and labor for their per
Torrance to the satisfaction OF the En-
gIneer. The pipes are to be thoroughly
coated by dipping twice in a bath OF re-
fined asphaltum heated to a temperature
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 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
diing the pipe. Whenever the coating IS
injured in transportation or by handing,
asphaltum paint acceptable to the En-
gineer must be Immediately applied TO
the injured portion. Such paint must 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 asphaltum-coating here
In specified and are acceptable to the
The pipe shall be constructed with
taper Joints, the end of each section
at each transverse riveted joint to be
inserted within the end Of the next sec
ton toward the point of delivery, OF water.
Ali longitudinal seams are to be double
There shall be suitable manholes locat-
| ed at intervals of about one thousand
feet on each pipe. Va,
No pipe shall be covered in until the
| and without and all defects have been
| renedied.
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 pipe systems
| of the City. Such connections shall be
| made in the most thorough and substan-
tial manner. Plans for this work must
BE approved by the Engineer and the
| work must be performed under his SUI