pa1778data.pdf
pa1778data.pdf
pa1778data.pdf
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U.S. STEEL DUQUESNE WORKS<br />
HAER No. PA-115<br />
(Page 141)<br />
deep skip pit is built of concrete construction. Its centerline<br />
is located 35 f -0" off of the eastern wall of the stockhouse and<br />
243'-3" off of the centerline of blast furnace number 3.<br />
Construction Date: 1953.<br />
6. Skip Incline and Track: The skip track consists of two<br />
parallel sets of rails spaced 5'-8 1/2" apart, mounted to a 15'-<br />
6" wide x approximately 9'-0" high inclined bridge, which rises<br />
for a distance of lSl'-lO 1/2" from the stockhouse floor to the<br />
top of the furnace along its centerline. The incline of the<br />
bridge is approximately 60 degrees.<br />
Design Date: 1952.<br />
7. Skip Cars and Carriage: The skip cars and carriages on<br />
both sets of tracks meet the requirements described in III - A -<br />
7.<br />
Design Date: 1952.<br />
Construction Date: 1969.<br />
8. Coke Breeze Feeder Conveyor: See description I - A - 9.<br />
Installation Date: 1959.<br />
9. Main Coke Breeze Conveyor: See description I - A - 10.<br />
Installation Date: 1959.<br />
10. Control Room: The control room for the raw materials<br />
delivery system at blast furnace number 4 adheres to the<br />
requirements described in I - A - 11, II - A - 8, and III - A -<br />
10. Construction Date: 1953.<br />
11. Counterweight Hoist Tower: The counterweight hoist<br />
tower is located on the east wall of the stockhouse just south of<br />
the skip pit. Rising to the level of hoist house number 4, the<br />
tower, which is constructed of structural I-beams, is<br />
approximately 5'-6" wide x 9'-0" long x 77'-0" high. The<br />
counterweight hoist system consists of three pairs of 6*-l 1/4"<br />
sheave wheels, one of which is located below the hoist house at a<br />
45 degree angle. The sheave wheels are connected by 1 1/4"<br />
diameter ropes to the skip incline motor, drive, and winch drum<br />
assembly and to two counterweights which run on rails up and down<br />
the counterweight hoist tower as the skip car travels along the<br />
skip track.<br />
Construction Date: 1921.<br />
B. Hoist House:<br />
1. Hoist House Building: Located approximately lS'-O" west<br />
of and on the centerline of blast furnace number 4, the hoist