Subjects Engineering

The application of scientific principles to practical ends as the design, construction, and operation of efficient and economical structures, equipment, and systems; also the profession of or the work performed by an engineer. Good practices in the various subdivisions of this field, including civil, sanitary, and transportation engineering, are the foundation of any city's well-being and livability.

Bridge Street Draw. Southwest side of bridge. April 19, 1896. [Detail].

Bridge Street Draw, April 19, 1896. [Detail of men]

Bridge Street Draw. View of old draw removed, looking north. April 19, 1896. [Detail]

Bridge Street Draw. General view of old draw, ca 1896

Preparation for War to Defend Commerce

The Water Works in Centre Square, Philadelphia

Color Diagram of Plan for the Collection, Purification and Disposal of the Sewage of the City of Philadelphia

30th Street Sewer

30th Street Sewer

Torresdale Conduit work gang, 1906

Torresdale Conduit work gang, 12/18/1906

Cumberland Street pipeline, 1907

Bureau of Water, Cumberland, west of 13th Street, pipe line, 1907

Oak Lane Reservoir pipeline, 1904

Oak Lane Reservoir pipeline, 1904

State Street pipeline construction

State Street pipeline construction, 1904