Vacuum Assisted Pipelines Operation
In the process of upgrading the sewerage facilities for Lancaster, Pennsylvania, it was decided to combine two existing facilities into one new facility. This required the design of three...
Controlling River Ice to Alleviate Ice Jam Flooding
Many communities affected by ice jam flooding have accepted the event as unpreventable. Others have approached their problem as one of open channel flow and implemented standard projects...
Historic Preservation of Engineering Works
The preservation of historic industrial and transportation engineering works is examined. Preservation is reviewed in the context of history, and preservation through recording is explored....
Pittsburgh's Troubled Bridges: What to Do About Them�
The Pittsburgh area is troubled by old bridges that are badly deteriorated. The metropolitan area has more bridges�� 1,700�� than any other. And some 66 of them have weight limits posted....
Secret to Constructing Pittsburgh's New Busway Within Budget
The owner of Pittsburgh's new South Busway worked hard to create a climate of cooperation, good will, mutual trust, and team work among owner, consulting engineer, contractor,...
Philadelphia Bridge Sparked Growth of Prestressed Concrete in the U.S.
Prestressing has been used for centuries. For instance, iron bands were heat-shrunk over built-up wooden wheels to increase their resistance to damage. In 1888, a man named Jackson from...
The Three Ages of Philadelphia
Philadelphia was founded in 1682 when a shipload of 70 arrived with William Penn from England. Origins of this all-religious colony are described. Though a half-century younger than New...
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