|
The East Side Access (ESA) Project in New York will connect the Long Island Rail Road’s (LIRR) Main and Port Washington lines in Queens to a new LIRR terminal beneath Grand Central Terminal (GCT) in Manhattan. The new connection will increase the LIRR’s capacity into Manhattan, dramatically shorten travel time for Long Island and eastern Queens commuters traveling to the East Side of Manhattan, provide a new commuter rail station in Sunnyside, Queens and much more.
Prior to starting construction, geotechnical instruments are being installed above ground and in the subway tunnels to measure any movement, settlement, tilt, strain and induced vibrations from tunneling, excavation and construction activities.
Existing LIRR tunnel structure (solid red);
tunnel structures to be built (dotted red)
|
Instruments include automated motorized total stations (AMTS) with reflective prismatic targets, manual survey points, inclinometers, extensometers, observation wells, tilt meters, seismographs, dynamic strain gages, and liquid level settlement systems (LLSS). Many of the instruments are designed to be read remotely and automatically.
The ESA construction manager selected Geocomp Corporation to collect and manage the vast amount of data from these instruments, and to provide a web-based data management system to ensure the data are processed, presented and reported in a timely, accessible and understandable manner.
To fulfill these project requirements, Geocomp is:
- providing professional staff in support of the geotechnical instrumentation aspects of the project as part of the ESA project team,
- providing iSiteCentral, the firm’s web-based data management system,
- integrating and connecting all specified instrumentation, data handling, communication and computer equipment, and furnishing and installing application software,
- collecting readings from instruments
that need to be read manually.
|
