The Jersey City news. (Jersey City [N.J.]) 1889-1906, 1895-03-05

\ :
must be free from cracks on the faces
and corners and have clean. smooth
finish.
All sheared edges of plates and other
forms must n. IS. be plan,ed off to a depth q q
must be drilled after the several pieces
forming one member are assembled to-
geether or they may be puneheed and.
one-eighth of an inch larger.
All forged work must be finally an
| nsaled
All rivets shall be of soft steel.
The saddles may be steel castings. J.
Wire-The wire for the cables, shall
rot be less in diameter : than sha No. 3.
shal eiI be blight ss straight l0s wire nson free
from any tendency to coil when nnrcll-
| be accepted. 1t must be perfectly free
/ from nipper marks. 1t must have an
| estimate strength per square inch OF
4 10000, an elastic limit of $4,000 per
square inch, and. an elongation Of per
4 cent. In a length of one foot; il musr
stand wrapping around rod half an
without evidence of fracture. Each wire
must have minimum length of 1850
feet without weld joint or splice. A vari..
| inch will be permitted in length of one
wire, and variation In the minimuM
| size of the various wires. not exceeding
Ali wires. as soon as made, must be
passed through an approved preparation
| Of linseed oil to protect i from oxida-
Of odYHt the oi coils, they they viii viii be jointed ana
coiled upon suitable drums for transpor-
praeticay hagnded ao Or The
drums must be of such a diameter as
not to .injure the straightness of the
wire: An the wire shall be subject to
First-Each ring may be tested for
tensile Strength, elastic limit, elonga-
ton and bending, by samples cut from
either end of the wire.
Or Second-Upon satisfactory evidence
that the stock and method of manufac-
forty may be selected as the basis Of ac-
cepsance or rejection of the whole forty.
In this case o length of wire forty
jeot ed to test. Such piece must show an
ultimate strength of 100000 pounds per
square. inch, and elongation over its
tic limit not less than 10000 pounds per
square inch. It must also answer the
requirements of the wrapping test.
above We ! may be made BY direction Of the
engineer but for such additional test the
loss of the material and expense of test
IN case the wire complies with the speel-
fications; otherwise, they shall be at the.
contractor cost.
G. for the external wrapping and No.
10 B. w. G. for the internal wrapping.
It must be annealed steel wire, and
than $4,000 pounds per square inch.
If the suspenders are. made from
straight wire I IwraPped IN the wire w m9st
and be equal in quality to the wires of
the cables. If the suspenders are made
from wire ropes the ropes must be OF
steel wire. with a wire core. The rones na
must have an ultimate strength of $780,
300 pounds per SCARE inch OF the cross
section of the wires and an an elastic limit
. looc M HG
not be less than No. 10 B. w. G.s and
must stand wrapping around half-inch
rod, and being unwrapped without frac-
INSPECTION AND TESTING.
The contractor for any class OF work
under these. specifications must furnish
of all materials and workmanship He
must supply and operate the necessary
testing machines ana rurn,sn ohsna .ne - RI
sized members may be tested to destruc-
ton at the option. of the engineer, bur
T peh Fl f fe ne au N Ge
otherwise. 1T will be at the loss OF the
contractor
All the structural work before leaving
the shop shall be thoroughly cleaned
from all scale and rust by means OF
good coat of selected preparation made
with pure linseed OIL, we'll worked into
I'll jos and open, .,s spaces &c Tvsssa 50 as 1yor 70
the surface coming IN contact shall each
be painted before being riveted together.
All surfaces which will not be readily
accessible, after the work is erected.
must be given two coats.
After the work is erected it shall be
thoroughly and evenly, painted with two
additional coats of such composition and
coIors as may be DIRECTED.
All the wire work shall be. fully satur-
ated with a preparation of linseed oil as
the work progresses. After IT, completion
enter must be thoroughly protested BY
suitable waterproofing material. The
work shall then be given two coats OF
paint.
Proposals must be accompanied by
tive details and such detail specifications
as will clearly and definitely show the
strength and character of the proposed
pIan and the methods to be employed in
'.All the plans and specifications, with
the necessary drawings of said bridge
shall be subm.eted to the Secretary of
War for his approval. and before such
approval the construction shall not be
begun "-(Act of Congress, approved
June Z, 1S94)