The Jersey City news. (Jersey City [N.J.]) 1889-1906, 1898-01-10

ing and other tests as may sufice 10 exhibit
fully the temper soununess ana ftness ior USE
Of the material. The failure Of said test speeii,3
mems, when taken at random as aforesaid
from the finished product of any heat Or
melt to conform ID the above requirements,
viii be sufficient cause for the rejection OF the
entire product of such heat or melt
The sheets or plates shall be free from lam
ination ana surface defects and be fully up
70 the required gauge for thickness on the
Rivst steel shall be soft and have a tensile
strength between the limits Of $4,000 and 5000
pounds per square inch. with an elastic ianll'
and with an elongstion of not Less .tnan %
per cent. in a test bar eight inches Ions pc
tween measuring points and full diameter Q,
rivet, and with a reduction Of cross sectional
area at the point of fracture of not less thah
DO 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 neal, any
quenehing In cold water, without sign OF IN ~
ture on the convex surface OF the bend. Inc
quality of material. OF rivet rods and subsequent
manufacture into rivets shall be such tnat the
edges of heads, of properly heated and rlVen
rivets shall be free from checks or CRACKS, Al
steel rivets not conforming to the above re-
quirements will be rejected.
All riveting in the shop must be cone VIII
hot steel rivets by steam, compressed ar OF
and retaining it sufficiently to perfectly n3rm
the riyet heads before the metal loses It's req
Color.
All rivets when driven must fit the holes
completely, and have heads of such form ana
size as will be directed by the Engineer. E.
Care must be taken to have the rlvets AZ
the right heat to produce the best and most
solid work. and any rivet that may at any Lilne
or place be found defective or appear to have
been overheated, shall be cut out and replaced
at the contractors expense by enc Wnieh -
sound and acceptable. All rivet heads must
be perfect in form and truly concentric Win
the shank or shaft.
The rivets used to connect the cylinders IN
the field, for attaching castings, ETC., 70 the
pipe, and for all work in the shop. shall pc OF
the quality described above, and they snal De
ner in every respect. All provisions herein con-
tanned relating to riyeting done IN the Snop
shall also apply as far as practicable 70 rlve.s
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-
faeture of the sheets or plates until the COM
pleted pipe is dipped and coated.
AT the factory the plates must De un9er
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 mns y
be removed from the plates before proceeding
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 circular
|tseaIns Of as many courses as may DE or n cnrva-
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
openings for man-hoies, blow-offs ana ar
valves, and pieces involving any other kind of
boiler-nakers' work, shall be manufactured IN
the best and most approved manner. All open
ings for man-hoies, blow-offs, air valves, etc,
must be provided with suitable reinforcement
rings or plates, cut, punched and roiled TO Inc
proper form in each case, not less than hye-
slxteentns or an inch IN thickness, anu haaac
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 fiange OF the cast
ings or forg1ngs, and be held in place by me
riyets which pass through said fiange 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.
All riveted seams and joints of every descrip-
ton shall be thoroughly ,caulked. both on the
most workmanlike manner for first class boiler
work, while for the necessary distance from all
laps the seams shall be both ehipped ana
caulked.
During the manufacture of the pipe sample
lengths, to be selected by the Engineer as re
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.
der a pressure of 30 per cent. greater than that
to which it viii be subjected in normal oper-
alton, and shall be absolutely tight under thai
pressure. All such tests shall be made at the
expense OF the contractor, and he shall furnish
all the necessary appliances and labor for thelr
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 Fahrenheit.
The metal must reach the same temperature
as the bath at its first dipping and may De
heated to this temperature before dipping. Ing
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
teeted by the ne coating Il e, ;r An t Pess soafin eaf IN h han'
ding the pipe. Whenever the coating is in
jured in transportation or by handling, as
phaltum paint acceptable 10 the Engineer must
be Immediately applied to the injured portion.
| Such paint must also be applied to all field
rivets.
pine may be adopted, provided that they are
in all respects equal in efficiency to the as
phaltun coating herein speclned ana are &C
ceptable to the Engineer.
The pipe shall be constructed with taper
joints, the end Of each section at each trans,
end of the next section toward the point OF
| delivery of water. All longitudinal seams are
There shall be suitable man-holes located at
intervals of about one thousand feet on each
pipe y
shall have passed inspection within and with
| cut 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 OF
tile rgof, 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
dow 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 stop-valve on the main conduit.
Suitable gatehouses of stone masonry, with
slate or tile roofs, CT attractive architecture ano
| appropriate to their surroundings, shall be built
at the points of delivery at Bellevilfe and Ber-
1 yen Reservoirs, with proper appurtenances fol-
measuring, regulating the pressure of and de-
liyering 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 appustenances.
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-
c~ayation 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 raTnmed
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
Rosenda1e cement concrete, surfaced with a lay
ar two inches thick of Portland cement NOR
tar. Where the tunnel is in earth or unsoun6
rock 4 brick invert, sixteen inches thick, shall
be laid at the bottom. If it shall