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.

Centre Square Water Works, Frederick Graff, Sr. Plans, 1799

Benjamin Henry Latrobe, portrait by Filippo Costaggini, 1880

Centre Square Water Works, Latrobe Plans, 1799

Three reports on Philadelphia’s Sewage Treatment Project, 1911-1914

1830 plan for the Pine Street Sewer

Plan of Pine Street Sewer, 1830

Mill Creek Sewer under construction. Several men standing beside a giant partially constructed sewer pipe.

Mill Creek Sewer under construction, 1883

Fairmount Water Works, by W. H. Bartlett, 1839. This engraving from an 1839 painting by William Bartlett shows the porch added to the Engine House about 1835 and the two gazebos built at the same time, all added to welcome visitors to the Water Works and a new saloon, or restaurant, in the Engine House. The powerful jet of water rising from the fountain in the South Garden, fed by a dedicated pipe under the full pressure of the reservoir, was depicted against the green foliage on the west slope of Faire Mount, near the east end of the Colossus. A barge is making its way downstream through the canal, headed under the Colossus to the busy port city of Philadelphia.

Fairmount Water Works, W.H. Bartlett, 1839

“Fairmount Waterworks. From the forebay.” (From nature & on stone G. Lehman; Published by C.G. Childs & G. Lehman, 1833. Free Library of Philadelphia, Print & Picture Collection)

Fairmount Water Works from the forebay, 1833

Fourth of July in Centre Square, John Lewis Krimmel, ca. 1812. The wooden statue in the fountain, “Allegory of the Schuylkill River (Water Nymph and Bittern)”, was carved in 1809 by Philadelphia sculptor William Rush.

Fourth of July, Centre Square, ca. 1812

Centre Square Engine House, location of one of two steam engines used in the city’s original water system. Engraving by Birch.

Centre Square Engine House, ca. 1807

A Roman aqueduct in Segovia, Spain, 2006

Roman Aqueduct in Segovia, Spain

Black-and-white image showing a man standing in a large concrete half-pipe

Thomas Run sewer outlet during construction

Black and white photo showing a wooden truss bridge over a creek

Wood truss drawbridge, Orthodox Street over Frankford Creek, rebuilt 1899