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Trinity Industries - STO Building Group
Structure Tone is a global leader in construction management and general contracting services with offices located in the US, UK, and Ireland. Founded in 1971, the company is among the world’s top twenty construction companies worldwide, responsible for more than $3.5B in annual construction volume.
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Trinity Industries

Trinity Industries selected five floors in International Plaza II to relocate their Dallas operations and chose Structure Tone Southwest as their construction partner. The new, modern environment was designed to reinforce and support Trinity’s shift in strategic focus. Trinity and Structure Tone’s shared passion for innovation not only allowed both teams to quickly adapt to the changes brought on by COVID-19, but even inspired Trinity to become the first WELL Health-Safety Rated project in Dallas.

The International WELL Building Institute’s (IWBI) new WELL Health-Safety Rating prioritizes health and safety in a post-COVID-19 environment. This achievement is focused on operational policies, maintenance protocols, emergency plans, and stakeholder education to address COVID-19 and broader health and safety issues. One of the visible features designed to protect employees includes more private workspaces within the open office environment, increasing separation and decreasing exposure. Behind the scenes, the WELL Health-Safety Rating is a commitment to supporting the health of each person in the space through policies, maintenance, and emergency plans.

During construction, Structure Tone Southwest utilized onsite EMTs and digital self-service stations to conduct daily personnel check-ins and protect workers and visitors on the jobsite. As materials and product lead times began to fluctuate, the team partnered with subcontractors to identify possible solutions and keep the project on track. Operating on an accelerated schedule, Structure Tone Southwest maintained continuous coordination and planning with the client, designers, and trade partners to ensure all project goals were met. This approach resulted in delivering the project a full two weeks early.

The construction of the space included demolition across five floors in an existing building and construction of raised access flooring. Each floor includes open office pods featuring the increased separation design, conference and huddle spaces, private offices, and support spaces. A recording studio on level 11 was treated with FWP panels, three-layer walls, and an acoustical door. Structure Tone’s scope encompassed all audio/visual, structured data cabling, and sound masking throughout the space. The selected millwork is featured to accentuate the thoughtful design of the headquarters and integrated with MuraFlex demountable systems. Finally, the team managed all interior and exterior signage for the client.

With health and safety posing a unique challenge on this project, the project team was extremely proud to have accomplished an early delivery date with zero incidents while meeting all the client’s goals.



Trinity Industries


International Plaza II, 14221 Dallas North Tollway


Dallas, TX




Lump Sum


Corgan Associates

Project Engineer

Purdy McGuire


First-ever WELL Health-Safety Rating in Dallas, Texas

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