Multi-Disciplinary Services

Tectonic has a long standing relationship with Central Hudson having performed multi-disciplined services throughout the region over the last 16 years. As part of their Transmission and Substation electrical systems upgrades and improvements, Tectonic has provided the following services:

  • Third party field inspection services, for performance of gas & electric utility facility installation throughout the lower Hudson Valley region for contractors.
  • Civil and structural engineering services for the design of caisson foundations to support transmission lines and utility poles at the Catskill Substation.
  • Subsurface investigation and geotechnical evaluation for the proposed upgrades to the Central Hudson Gas & Electric (CHG&E), 11-mile, 69 kV SB transmission line located between Kingston and Saugerties, Ulster County, New York, and the 12-mile, 69 kV H transmission line located in Catskill, Greene County, New York.
  • Structural engineering services for the design of caisson foundations to support 2 transmission towers on the NW transmission line.
  • Geotechnical investigation and prepared a report describing findings and recommendations for the construction of two (2) steel transmission poles to replace existing wood pole structures on the WM line in Walden, NY.
  • Structural analysis and field investigation of an existing elevated concrete slab and the brick bearing walls supporting the slab within a historic power station building at the Montgomery Street Substation.

Term Agreements

Tectonic has been working with Con Ed through various Term Agreements over the last 15 years. As part of their Transmission and Substation electrical systems upgrades and improvements, Tectonic has provided the following services:

  • Structural engineering services for more than sixty (60) of Con Edison’s transmission towers.
  • Geotechnical and Environmental engineering. Geotechnical and environmental services including: performance of subsurface investigations, laboratory testing, geotechnical and environmental analyses, report preparation and geotechnical instrumentation and monitoring services.
  • Controlled inspection and materials testing services for soils, concrete, masonry, asphalt, and structural steel materials, preparation of inspection reports and performance of on-site investigations.
  • Land and property surveys, title searches, ROW and easement surveys, topographic surveys, hydrographic surveys, including soundings, construction and quantity surveys, transmission surveys including subsurface or overhead electric, gas and steam lines, and route feasibility surveys and studies.

DASNY Construction Monitoring Projects

Under multiple term agreements held since 1996 with the Dormitory Authority of the State of New York, Tectonic has provided, and is currently providing geotechnical design and construction phase monitoring services for various state and private facilities throughout New York State. The construction phase monitoring services include performance on preconstruction condition surveys, vibration monitoring, noise monitoring, deformation monitoring, and crack monitoring.

On-going and/or completed monitoring projects to date include:

  • Lehman College Science Center
  • CUNY York College
  • Baruch College
  • Bronx Community College
  • CUNY ASRC Utility Tunnel
  • SUNY Albany Liberty Terrace
  • South Beach Psychiatric Center
  • SUNY New Paltz Dormitories

New NY Bridge (Tappan Zee Bridge Replacement)

Tectonic is providing inspection and testing services as a subconsultant to the design build team for the construction of the New NY Bridge, formerly known as the Tappan Zee Bridge. The existing bridge is an essential component of the regional roadway network connecting Rockland and Westchester counties and provides integral access to the New York Metropolitan Area.

The services Tectonic is providing are guided by the Quality Assurance and Quality Control program for the project, which was developed using ISO 9001 standards, 23 CFR Part 637 requirements and the project’s contract document. Tectonic is responsible for all components of special inspections and materials testing, including:

  • Pile driving inspection & monitoring
  • Steel inspection & non-destructive testing of steel components
  • Geotechnical inspection of earthwork, subgrades & backfill
  • CIP & precast concrete inspection & testing
  • Asphalt paving inspection & testing
  • Establishment of an on-site materials testing laboratory

The new NY Bridge is designed for a 100-year service life and will be mass-transit-ready. It will feature twin 3-mile structures, each with 1,200-foot cable-stayed main spans and 350-foot steel girder approach spans. The Bridge will provide 8 general traffic lanes, emergency lanes, extra-wide shoulders for express bus service, a dedicated bicycle and pedestrian path on the northern span, and scenic overlooks with anti-climb fencing and security cameras. A new toll plaza will include at least 3 highway-speed E-Z Pass lanes.