World Trade Center – Tower 4

The World Trade Center – Tower 4 was designed by the Pritzker-Prize-winning architect Fumihiko Maki as a 72-floor superstructure, rising 977 feet with 2.5 million rentable square feet of space. The tower offers 140,000 sf of retail on five floors, a 46 foot lobby, and art installations by Kozo Nishino and Thinc. It is an elegant achievement of technology, efficiency and sustainability. Tower 4 is located at 150 Greenwich Street and bounded by Greenwich, Liberty, Church and Cortlandt Streets.

World Trade Center – Tower 4 was designed in accordance with the highest energy efficiency standards to meet the LEED Gold level of sustainable design by the U.S. Green Building Council. It shares the site’s 16-acres with Towers 1, 2, 3, 5 and 7 in addition to the National September 11 Memorial & Museum, and the Transportation Hub.

Four World Trade Center features many structural enhancements, including a reinforced concrete core and columns with steel girders and beams. Safety systems were designed to exceed New York City Building Code and to meet agency requirements. The firm was responsible for providing QA/QC and Special Inspection services for all aspects of the construction.

The firm performed quality control monitoring and oversight of the construction project to ensure it met and exceeded the requirements of the building codes and the intent of the design plan and specifications. The firm assigned experienced professionals familiar with the types of materials used and the construction process to ensure the methods used by the contractors were proven to provide results.


Walgreens is one of the largest drugstore chains in the U.S., with more than 8,000 stores in all 50 states, the District of Columbia, Puerto Rico, and the U.S. Virgin Islands.

Walgreens Company has selected Tectonic as a pre-approved and preferred Special Inspections and Materials Testing agency for new construction in the Hudson Valley region of New York and New York City.

Tectonic has provided the Special Inspections in accordance with Chapter 17 of the Building Code of New York State and New York City with qualified personnel for structural building systems which includes:

  • Cast-in-place concrete
  • Energy Code Compliance Inspections
  • Firestopping
  • Heating Systems
  • Masonry
  • Mechanical Systems
  • Reinforcement steel
  • Soils and subgrades
  • Sprayed Fire-Resistant Materials
  • Sprinkler Systems
  • Structural Safety-Structural Stability
  • Structural Steel Welding & Bolting

Tectonic has also provided other quality control inspections for site work including asphalt paving and site retaining wall construction.

Recent projects include:

  • Bronx, NY
  • Brooklyn, NY
  • Dobbs Ferry, NY
  • East Patchogue, NY
  • Manhattan, NY
  • Mineola, NY
  • Montgomery, NY
  • Nanuet, NY
  • New City, NY
  • New Windsor, NY
  • Nyack, NY
  • Ossining, NY
  • Queens, NY
  • Rosedale, NY
  • Spring Valley, NY
  • Spring Valley, NY
  • Staten Island, NY
  • Tappan, NY
  • Thornwood, NY
  • Valley Stream, NY

Westchester’s Ridge Hill Shopping Center

Developed by Forest City Ratner Companies (FCRC), Ridge Hill in Yonkers, NY, is a dynamic and diverse mixed-use project, featuring some 1.3 million square feet of retail space, including shopping, restaurants and entertainment. It also includes about 160,000 square feet of office and research facilities, as well as a hotel and conference center. Ridge Hill’s residential component is comprised of 1,000 apartments, of which 200 are for active adults ages 55+ and 135 affordable units.

Tectonic provided Special Inspections & Materials Testing services for all facets of construction, including soils subgrade inspections, soils fill placement & compaction testing, steel reinforcing inspections, concrete testing & sampling, masonry inspections, structural steel welding & bolting inspections, fireproofing inspections, firestopping inspections, site utilities inspections and testing, floor flatness testing, and cold formed framing inspections

Quickway Industrial Park Site Development

This project involved the design and development of various sites with associated parking on seven (7) parcels comprising fifty (50) acres including:

  • One 70,000 square foot office building
  • Two 86,000 square foot manufacturing complexes
  • 153,000, 60,000, and 45,000 square foot interstate and inter-local warehouse facilities
  • Resubdivision for commercial, retail and hospitality uses

Tectonic performed a broad spectrum of services that varied across each site including:

  • Boundary & topographic surveys
  • Subdivisions
  • Conceptual, preliminary & final site development designs
  • Site layout, grading, drainage, erosion control, landscaping, lighting & utilities
  • Environmental assessments, wetlands delineations, and regulatory permitting
  • Stormwater management
  • Preparation of structural foundations
  • Geotechnical studies
  • Construction inspection services

In addition, water quality and quality controls were designed to NYSDEC standards to meet sizing criteria and pollutant removal goals while hydrologic/hydraulic analyses supported regional stormwater system designs that expedited approvals of subsequent phases.

Mack-Cali Properties

Tectonic is providing environmental consulting services to a Class A office building in Paramus, NJ. The facility features over 348,500 SF of leased space and a dramatic atrium overlooking a courtyard and pond. Tectonic was referred to the owner for its leadership’s expertise contributing to New Jersey’s Department of Environmental Protection technical guidance documents.

Tectonic’s initial services were to review and advise on the work of the tenant’s LSRP as they worked on their leasehold space. Tectonic was protecting the owner’s interests by ensuring the work was adequate and measured. Later, Tectonic took over stewardship to remediate the Poly-Chlorinated Biphenyls in accordance with State and Federal requirements and procedures

Kohl’s Expansion

Kohl’s Department Stores is one of the largest discount department store chains in the U.S. Their continued growth resulted in a large expansion to open many new stores in various locations throughout NY and NJ.

Tectonic worked with Vision General Construction, Inc. to provide surveying support during the construction of nine Kohl’s Department Stores and one Distribution Center. This consisted of verifying surveys of existing features, layout of building control lines, foundations, and site features such as parking areas and drainage structures. As-built surveys were prepared after construction for submittal to the municipalities for approval.

Tectonic also provided special inspections and materials testing in addition to geotechnical and construction support services for 11 Kohl’s Department Stores as well as the Distribution Center located in Mamakating, NY.

Hudson Yards Plaza Landscape Overbuild

Tectonic has been awarded and is currently providing surveying services for the Hudson Yards Redevelopment Project on the West Side of Manhattan. This project is a joint venture with New York City and the Metropolitan Transportation Authority to encourage development on Manhattan’s far West Side.

At full build-out, the mixed use development will include 16 high rise buildings containing more than 12,700,000 sf to accommodate residential, commercial and retail development. A platform will be constructed over the MTA Long Island Railroad (LIRR) West Side Storage Yard to accommodate the 16 buildings and infrastructure.

The plaza will encompass 14 acres of new public open space and parks which is half of the entire Hudson Yards site. It will have easy access to the High Line and will host events at the Culture Shed and Public Square.

Tectonic will provide layout services and quality control checks to ensure the correct location of features and the smooth flow of construction. Tectonic has also been tasked with checking the overall control and location of major site features for the entire Hudson yards project.

Many projects are taking place at the same time, therefore the construction manager is challenged with the task of making sure the projects “fit” together. Tectonic is accomplishing that task by monitoring the interrelationships of the ongoing projects and providing control checks on upcoming projects.

The Hudson Yards site is expected to receive over 24 million visitors each year.

Home Depot

Tectonic provided a full range of construction support services for the construction of Home Depot Stores located throughout various areas of NY, CT and MA.

The projects consisted of the construction of stores with an approximate size of 110,000 square feet. Site improvements included facility parking for up to 400 cars, site access and internal roads. Additional site improvements included stormwater drainage and conveyance systems, curbing, landscaping, and lighting. The construction required significant earthwork to establish site grades, using compacted fills and modular retaining wall systems.

Inspection and testing services were provided for numerous stores that were located throughout New York, Connecticut, and Massachusetts, and include the following:

  • Albany, NY
  • Bronx, NY
  • Catskill NY
  • Cortlandt, NY
  • Fishkill, NY
  • Glens Fall, NY
  • Jamaica Queens, NY
  • Middletown, NY
  • Nanuet, NY
  • New Rochelle, NY
  • Newburgh, NY
  • Nyack, NY
  • Monticello, NY
  • Poughkeepsie, NY
  • Wappingers Falls, NY
  • Berlin, CT
  • Orange CT
  • Southington, CT
  • Bellingham, MA

LOOP Hudson Valley Shopping Center

Tectonic is working with the Wilder Companies to provide professional engineering services for the development of a 650,000 square foot outdoor shopping center, known as the LOOP-Hudson Valley, in the Town of Newburgh, New York.

Tectonic performed several subsurface investigations and geotechnical evaluations for the new shopping center. The subsurface investigations performed evaluated the subsurface conditions and developed geotechnical recommendations for the design and construction of the foundations for the proposed buildings, and related improvements, in addition to the main tenant pad sites. These services included drilling, sampling and logging of over 150 borings and test pits.

Tectonic developed methods to overcome project challenges including soil and rock slope stabilization design, and remedial removals of unsuitable bearing materials in some tenant locations by providing detailed rock fill specifications and placement procedures.

Conveniently located in Newburgh at the junction of two major interstates (I-84 & I-87), The LOOP-Hudson Valley will feature a variety of dining experiences, specialty retail stores, a multi-screen theater, fitness, and lifestyle retailers. As part of the Hudson Valley’s River Town Revival, the center will provide jobs, revenue, and a community-friendly shopping experience.