Evening star. [volume] (Washington, D.C.) 1854-1972, 1895-09-10

the Warrington groove; its weigh, is
elghty-three pounds. The gard rail is the
same depth. and takes the same splice
bar; its weight is eighty-seven pounds. The
splice bars are thirty inches long. nine
sixteenths of an inch thick, and bolted on
with six one-inch bolts. The yokas weigh 26T
one inches. The depth of the tube is
twenty-five inches. Every thirteen and
half feet large manhole, frame and
cover, extending from track to slot rail. and
this is placed small frame and cover
Just sufficiently large to hold insulator.
The corner of the large frame is also ar
ranged to take the opposite insulator. The
insulators In this way are clear from and
entirely independent of the yokes.
The conduit Is formed entirely of Port
land cement concrete. In the entire space
taken up by, and between, and two feet
outside Of the outer rails concrete paving
base is placed made Of natural cement.
The insulator is of porcelain. 1t is quite
large, being four inches in diameter and
seven and a half inches deep over all. 1t
is held In an iron cap and in turn 1t sup
ports rod by having the corrugatons
filled with neat Portland cement The
fact, the assembled insulator seems to be
abundantly strong mechanically for the
rough usage to which 1t may be subjected.
malleabe iron clip is held by cast iron
nuts to the insulator bolt and the clip in
turn supports the conductor rail. Adjust
ment in a direction at right angles to the
slot is provided for in the clip where the
insulator bolt is held, while in a direction
parallel to the slot the adjustment is made
in the seat for the insulator case on the
frame The conductor rail is made of mild
steel 1t is a ct section, weighing twenty
three and half pounds to the yard. Its
equivalent section in copper is assumed to
be 100000 circular miles. One half of the
road is double AMI the remaining half
the Chicago rail bonds" Between the
bend terminals 600 stranded cable is used
to make them flexible. The circuit being
made on the insulated conductor rails, the
wheel rails are not bonded. Matches are
provided every 400 feet, by which the con-
ductor rails twenty-seven feet ioEg, are
placed in the tube after it is finished.
For the purpose of drainage the tracks
are connected by large sewer pipes to the
manholes, from which connection is made
to the sewer. The tracks are SO drained
about every 400 feet. Feed wire ducts are
laid from the station to 9th and streets,
nearly the whole length of the line. To
9th and + streets, distance of 10. 400 feet,
twelve way ducts are laid and from there
on four way ducts are used. The reason
for laying the twelve way ducts is that the
station is intended to operate hereafter the
east half of the east and west line, which
crosses the 9th street line at F street. For
the 9th street line 80 600 feet of 100000 c.
NJ. and 80 400 feet of 800 600 C. NJ. lead-cov-
cred cable is used.
The road is divided into four distinct cir
cults. At F street the line is cut and each
track is made separate both north and
south of street. Below F street the
conductor rails used alone. Above F
street the cables are tapped into the con-
ductor rails about every 500 feet.
COst of the Work.
No final estimates having been made, it
Is impossible to give actual figures of cost,
but the cost per mile of single track (of
straight track, based on actual contract
figures, is hereby given:
Wheel rails, slot rails and joints. Sc 46S 90
Conductor rails. OBSERVATION-DISCLOSURES. 267. 20
Bolts, nuts, washers, liners tie
rods, Observation-Disclosures. 1920
Yokes, manholes, frames, covers
and all cast Observation-Disclosures. 5o6s.o0
1nsulators ACKNOWLEDGEMENTS. 264.03
Malleable iron clips. 26400
Bonds, finished Single bonding).... 221 40
Excavation Observation-Disclosures. 23I6OO
First-class concrete for tube. ....... 5,O6S so
Second-class concrete for paving
base Observation-Disclosures. 3,oG2 40
Track laying, hauling and tempo
rary track. Observation-Disclosures. 2,4552o
Asphalt paving. in, one-half way
between, and two feet outside of
tracks NEUTRALITY-SUSPICIOUS.. 1890
$34,S11 40