pa1778data.pdf

U.S. STEEL DUQUESNE WORKS
HAER No. PA-115
(Page 24 3)
The eleven story, 88* long x 45' wide Coal Bunker Building
is adjacent to the northern wall of the boiler house. Laid out
on a north-south axis, the riveted, steel-framed and corrugated
metal clad building was constructed on a concrete foundation by
the American Bridge Company. Its gable roof is supported by Fink
trusses. The building was used to house machinery and eguipment
which could provide crushed coal to the boilers in the Central
Boiler House. Located on the 11th floor of the building is a
counterweight winch drum and its casing. Four counterweight
winch drums and their casings, which are connected by a 1"
diameter rope to the counterweight winch drum on the 11th floor,
are located on the 10th floor. Two skip tracks upon which the
skip cars delivered coal to the boiler system ends at the 9th
floor of the building. Leading from the top of the skip tracks
to the coal crusher on the 8th floor are two chutes. The crusher
itself was manufactured by the DeLaval Company. The crushed coal
was delivered by means of a chute to the 7th floor of the
building where it passes through a 10' square screen. The screen
divides the useable coal from the slack, delivering the useable
coal, by means of a pair of chutes, to one of two 15' square bins
on the 6th floor, while the slack was directed to the slack coal
bin on the 6th floor. The useable coal bins act as reservoirs
from which the coal is delivered by means of a chute to a
conveyor located near the western wall of the building on the 3rd
floor where one of two tripper cars transfer the coal into a
series of bins suspended from the floor, thereby providing part
of the ceiling of the 2nd floor. The 2nd floor of the building
contains a recording panel near the eastern wall at its southern
end. The panel measures natural and clean blast furnace gas
pressure and flow. A doorway on the east wall of the building,
and near its northern wall, leads to an approximately 20' long x
10' wide x 25' high motor room for the coal skip hoists. There
are two large D.C. motor/gear drive/winch drum assemblies located
in the room. The stock house for the delivery of coal to the
skip hoist system used to be located below grade level in the
basement of the building. It was demolished in the early 1970s
after the last of the six original coal fired boilers were
converted to gas fuel.
Construction date: 192 4.
VII. Electric Power House No. 1 fCurrently Armature Weld Shop^:
The one story, 295' long x 50' wide former Electric Power House
No. 1 is laid out on a north-south axis, just north of the Main
River Pump House. Constructed on a concrete foundation by the
Keystone Bridge Company, the building's brick exterior encases
its steel framework. A corrugated metal gable roof is supported
by riveted Fink trusses. Large segmented arch windows rim the
structure's southern, eastern, and western walls. A 10-ton
E.O.T. crane spans the width and runs the length of the building.