New-York tribune., 1873-05-03
THE BROOKLYN BRIDGE.
Continued from First Page.

masonry. in appearance something Ike the Fortysec
ondz Reserv6ir except that in front there Will extend
two arches 80 feet in hight and small low arches built
in the solid masonry OF the road to provide Tor the pas
sage ON tbe BROOKLYN OF the proposed underground
railway ana the four cables which will project from the
Each Of the four cables at the place where union Is
formed with the chains viii be composer ol ~ sIans
which win meet the chain % feet from the face OF the
masonry Each strand will be passed around SHOE
which joined 10 pair Of bars Ihese Dais uAs0 'o
chains and the cables
THE vIADUCrs.
After the anchorage s finished the viaduct IN New
York viii Cherryst pass diagonay across FRANK
lin-square, pass Cli-st at intersection OF FranKor''
Vandewaer and R0se-sts cross William ana North
William-sts the point of their junction. ana sAo
the middle OF The Daily Hcws building. emerging INTO
viaducts viii be renewed IL is deemed unsafe 70
allow anything remain which might be set on hre ana
The yiaduet on the Brooklyn side will cross forkst'
at night OF about 50 feet from the street cross F5o
pect-st, where slight curve will be made toward + W.
ton-st.. as to enter sands-st at right angles ~
The considerable portion OF the square a sands Pros
pect, Washington and Fulonss will be used as build
ings for the engines and offices OF the Bridge Company
on the New-York side large edhce viii probably @ De
built the present site OF Frencs Hotel, or IN the
Park which win be used Union depot by the horse
companies whose terminus Is az present below the
THE ROADWAY.
Each division OF the roadway Of the bridge will
tain two geways and one railroad track, while the
passage for foot passengers will be in the center and ee
the right in passing through each division and the
from New-York Brooklyn viii pass along the track
placed in the southern division while those crossing
the other thOroughfare. The Brooklyn anchorage
will he finished TO the street Level dur
tower in its entirety and the anchorage will be
pleed the the NewYOrk side Will be finished
the street level In 1875 the SewY0rk anchorage and
tower will be completed and IN 1876 WORK wl De 1ei,
advanced the two viaducts. Ia 1877 the cable Will
begin TO be laid with its pendants, which Will SUPPORT
the roadway and il is confidently asserted that IN 1915
five years hence, the bridge viii be opened Tor travel
TIE LAYING OF THE CABLE.
The work OF laying the cable viii be necessarily slow,
as work will have TO be suspended windy days. and
when the temperature is extremely hot or cold The
wires can only DO extended the same uniform degree
Of temperature and will probably be hung before sun
rise and after II is discovered that the differ
Winter cold and expanded by extreme summer neat
will be three feet inches between the twO lowers
and In order have uniformity in the contraction ana e1
pansiOn OF cables each composing them must 9e
laid uniform temperature. This VII necessltlH td
make work slow The cables will consist OF wires united
by rings not cOiled or wound Edch canle wiz col
sist OF 5000 wires which viii weigh about 9 IONS Elgi
tower will weigh 5000 tons. while the weight each VIII
oT @ S The beavtsf load rom ira vel that viii
the center span will be 200 tons. The cables VIII sup
port six times that amount OF weight.
T75e frsr connection made between the two towers
will consist OF fOOtpath which workmen can pass
and work unon the wires This Will consist OF two heavy
rabes the ends of which will be tOwed by tugboat 20
the opposite where it viii be hoisted 70 the IOp
v steam power They will then be frightened A. greatly
they will bear and pieces of planhing placer STI4 i
along which To operate in the construction OF e &
cables viii then be extended from one tower 70 Une
other and 70 II will be attached hanging basket IN
which men will be placed ana moved rom one one
OF rope attached to The basket and
operated by steam engine. A. the basket moves moves
from tower TO tower the workmen unite wire the ena
OF which they hold, and which Is unroiled tron wind
lass the top of the tower 10 the wire are Tre,uy ld
and thus begin the making OF the cahle ms process
repeated day after day, finally results ~ lHe
tion OF the cables Of the desired thcAnes me t6. M
step OF attaching the pendants Whlch are 20 suppu
roadway and travel are comparatively easy tuu Icy
OF an comes the laying ot tle 1oorlns ana rill"ay
which supported by cross pieces Oh ron su'l9Auou
by numerous wires from the four main cables
CASTING BRIDGE PLATES.
The second plate for securing the chains OF the Brook
Iyn Bridge was yesterday cast at the South Brooklyn
steam Engine Works The mold, which was four weeks
in formation was built in the following manner; \
circular excavation % feet in diameter aud three feet
deep was first made. at the bottom Of which an IRON
pIate was inserted UpOn this course OF brick eight
inches thck laid IN mortar OF hre sand ana nre
ceY The uprer surface was then eVelcd on ana DaNtl
with charcoal This surface served the base Of the
mold. which OF lOam secured nv DlcA-"oih ana
iron giriers. ana built IN sections Inc enormous
amoIn of As tons OF iron used for the plate and
rirders the mold. The plate itself Will De oval
ness at me ribs three feet. will weigh 1900 pounds
when cleaned. and Will cost $500. About 5000
day ami exposed the intense head OF the furnaces
for two hours. The metal IN moten con'Illon & as
with the opening Of the mold AT 70 minutes 20 I'D the
afternoon the reservoir was opened ~ the same time
tbat very large adefu OF the molten metal was poured
into an opening at the opposite side or the mO Ihs
two streams Of the rushed simultaneously into the
mold filling 10 in the short space two and onelaii min
ues The gases arising from che metal We're Oy
Of yenthOes The greatest precautions had Deen
taken 10 guard against the presence Of moisture IN the
mOds these having been heated continuously Tor several
days previous 70 the casting The mold vii be broken
i'm about "A week and the casting, which will then be COOL
will be cleaned and taken It's GeEtnatOu at the
anchorage on the site Of the old Jsnes-st. Market