pa1778data.pdf

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U.S. STEEL DUQUESNE WORKS
HAER No. PA-115
(Page 241)
The Water Treatment Filter Building was built on a concrete
foundation by the American Bridge Company. The process steps by
which the water was treated follows successively from the second
floor of the building down to its basement.
Four approximately 6 f diameter x 4' high chemical mixing
tanks are laid out linearly and located near the northwestern
wall on the second floor of the water treatment filter building.
Running directly above the mixing tanks is a 5 hp motor/shaft
assembly which drives the impellers in each container. A 7.5 hp
Louis Allis motor/Labour Company pump arrangement, located at the
northwestern corner of the floor, delivers chemicals (lime, soda
ash, etc.) that were mixed in the tanks through 3" diameter pipes
to the reaction tanks. The operators office, containing the main
control panel for the system, is located in the southwest corner
of the floor.
Located on the first floor of the building are eight
approximately 15' wide x 20* long gravity sand filters, laid out
in groups of four along the northeastern and southwestern walls.
A small 20 hp Westinghouse Induction motor/100 gpm Weinman pump
arrangement is located in the northwest corner of the first
floor. It was used for flushing and draining the chemical mixing
tanks.
The basement of the building consists of a 66'-6" long x
561-git wi