Manufacturing Industry
Tren Urbano Rio Piedras contract. (Contractors Forum: Puerto Rico - San Juan).(Brief Article)
World Tunnelling, December, 2001
Kiewit Construction
Company/Kenny Construction
Company/ HB Zachry
International (KKZ) J/V
The Rio Piedras Contract consists of a 1,500m long underground rapid transit guideway with two underground subway stations. A significant portion of the Rio Piedras alignment traverses a dense urban area with numerous occupied historical buildings in addition to the University of Puerto Rico. The geotechnical conditions consist of weathered alluvium (soft ground) and most of the project structures are located below the groundwater table. Four different tunneling methods were used along the alignment.
NATM Tunnels: Four tunnels were constructed under two historic structures. Two of the four tunnels were constructed as part of a...
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