pa1778data.pdf

U.S. STEEL DUQUESNE WORKS
HAER No. PA-115
(Page 142)
house building is 25'-9" wide x 59'-7" long. The height of the
building is 18'-0" from the floor to the underside of the truss
for a distance of 42'-4" measured from its northern end. The
remaining 17'-3", measuring from its southern end, is 32 f -9" from
the floor to the underside of the roof truss. The building is on
a steel column supported platform which extends 29 f -9 1/4" above
the trestle. The columns of the steel framed corrugated metal
exterior building are welded to steel plates which are bolted to
the concrete floor of the building. The north and south ends of
the building's gable roof are supported by Fink trusses.
Original Construction Date: 1924.
Construction Date of 17'-3" Extension: 1953.
2. Motor-Generator Set: Located in the northwest corner of
the hoist house building is the motor-generator set. Laid out on
a north-south axis, it is composed of a 500 hp General Electric
Custom 8000 A.C. motor operating at 1180 rpm connected by a line
shaft on each side to a 200 kw General Electric D.C. generator.
Installation Date: 1967.
3. Main Circuit Board: The 12'-6" long x 5 1/2" wide x 7 1 -
6" high Clark model, main circuit board for hoist house equipment
is located along the eastern wall at the southern end of the
original hoist house. It was manufactured by the Koppers Company
of Pittsburgh, Pennsylvania.
Installation Date: 1961.
4. Skip Drive and Winch Drum Assembly: Located in the
center of the original hoist house building are the remains of
the motor, drive, and winch drum assembly. They consist of two
Falk Enclosed Gear Drives with a gear ratio of 6.875, each
connected to a Cutler-Hammer brake assembly, which are
mechanically attached to a 6*-0" diameter x 11'-2" long winch
drum wrapped with 1 3/8" cable. Connected to the winch drum at
the center of its southern face is a Logan Lily Hoist Controller
which is flanked by two Clark model, top and bottom limit systems
manufactured by the Koppers Company.
Installation Date: 1961.
5. Electric Hoist: A 10-ton electrically powered service
hoist is suspended from a monorail 18*-0" above the hoist house
floor and running along the centerline of skip drive and winch
drum assembly. The arrangement of the hoist matches the
arrangement described in section III - B - 5.
Installation Date: 1961.
6. Stockline Test Rod Motor, Drive, and Winch Drum Assembly:
Two small test rod assemblies are laid out on a north-south axis
on an approximately 4 I -0 H wide x 30'-0" long x 10'-0" high