Saving a sinking city

Article Abstract:

A rehabilitation project for the Co-op city in New York aims to reconstruct the entire underground systems of the deteriorating city while ensuring disturbance-free daily life for the community. The project involves replacing the dual- and high-temperature hot water, heat and air conditioning systems, and establishing an upgraded electricity delivery system. Various strategies adopted for effective reconstruction include installing adequately insulated piping, pile-supported concrete deck and precast concrete manholes. The $74 million project is scheduled for completion in Jun 1998.

Reports, Science and technology policy, City planning, Urban planning, Underground utility lines, Co-op City

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Saving San Antonio

Article Abstract:

The San Antonio River Tunnel (SART) is a recipient of an Outstanding Civil Engineering Achievement merit award for 1999. The 5-km-long and 24-ft wide tunnel protected the city from floods brought about by 22 inches of rain on Oct 17, 1998. Without the tunnel, the San Antonio River would have overflowed and flooded the city's downtown area. However, flood waters were channeled back into the San Antonio River through SART. Located 140 ft beneath the city, SART was constructed by US Army Corps of Engineers and the San Antonio River Authority.

Public works, Sewer systems, Texas, Flood control, Storm sewers, San Antonio, Texas

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