Owner: MTA New York City Transit
Client: Judlau Contracting, Inc.
Location: Manhattan, New York
Construction Cost: $ 176 Million
This project involves station reconstruction including rehabilitation and construction of entrances of the New Second Avenue Subway 63rd St./Lexington Avenue Station, Borough of Manhattan. The work under this project included but was not limited to: the construction of new station entrances to allow access from 3rd Avenue; construction of new ancillaries and open vent structures to street entrances; modification of existing interior station structure at 3rd Avenue to connect new entrances to platforms; utility installation and relocation; construction of interior walls and rooms and installation of architectural finishes and station elements; demolition and removal of existing station ventilation system; installation of a new and emergency station mechanical HVAC system that includes tunnel ventilation.
- Pre-construction building condition survey for 24 buildings.
- Responsible for Geotechnical and Structural Instrumentation and Monitoring.
- Installation and presentation of real time data in website using remote monitoring system for:
- 2 Observation wells
- 128 Deformation Monitoring Prisms
- 5-Automated Motorized Total Station
- 52 Deformation Monitoring Points for Paved, Unpaved Areas and Utilities
- 73 Tilt Sensors (Horizontal and Vertical)
- 26 Vertical Deformation Monitoring Points for Interior Structural Elements
- 35 Crack Gauges
- 6 Vibration Monitoring Devices
- Exploratory borings for micropile construction in the basement of the existing buildings.