Hamilton College Pedestrian Bridge and Pathway Replacement
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Enhancing Campus Circulation with a Safer, More Accessible Crossing

DOC led the full replacement of a 196-foot pedestrian bridge near the campus pond and regraded the adjacent pathway to improve safety, accessibility, and pedestrian flow for the Hamilton College community. The new bridge is two feet wider than the original and features LED lighting and a snow-melt system, ensuring year-round usability in all seasons.

Maintaining uninterrupted campus access throughout construction was a top priority. DOC implemented temporary ADA-compliant detours and coordinated closely with campus facilities staff to minimize disruption, keeping work moving safely and on schedule.

Partnering with Voith & Mactavish Architects, Thornton Tomasetti, Kohler Ronan, Stimson, and O’Donohoe Lighting, DOC executed the design of this aesthetically pleasing and sound structure that enhances campus circulation, meets modern accessibility standards, and provides a safer, more functional connection for students, faculty, and visitors alike.

Jeremy Smith

Project Contact

South District WWTP Chlorine Contact Tank
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Increasing System Capacity and Reliability for Long-Term Water Treatment Performance

This project delivers critical upgrades to the water treatment facility’s disinfection and conveyance infrastructure. Scope includes construction of a new chlorine contact chamber along with wellheads for three new injection wells, expanding the facility’s treatment and injection capacity.

To improve system-wide flow management, a 72-inch interconnect pipeline links the north and south sides of the effluent loop, complete with a dedicated vault housing a flowmeter for accurate monitoring. A 108-inch PCCP line conveys filtered effluent from the filter effluent flume directly to the Chlorine Contact Chamber influent pipe, ensuring efficient transfer through the disinfection process.

The project also includes associated yard piping, along with comprehensive site civil grading and drainage improvements to support the new infrastructure and maintain proper site drainage.

South District WWTP Substations
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Expanding Power Capacity and Reliability

This project delivers critical electrical infrastructure upgrades at the South District Wastewater Treatment Plant (SDWWTP), reinforcing the plant’s power capacity and long-term reliability. The scope includes the construction of two new substations, 5-6 and 15-16, along with the redistribution of electrical loads from existing substations to support increased demand.

Work also includes the design and installation of all ductbank routing throughout the facility, as well as the furnishing and installation of feeders, 13.2 kV-480 volt (V) transformers, and switchgear. Together, these upgrades strengthen the electrical backbone of the plant, ensuring continued operational resilience for this essential public infrastructure asset.

George T. Nasuti Elementary School
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Building a Modern Elementary School Designed for Learning, Community, and Long-Term Value

The new George T. Nasuti Elementary School is taking shape at the former Barry Field site in Woonsocket as a 133,000-square-foot Pre-K through 4th-grade facility, delivered through a design–build partnership with the Woonsocket Education Department, Rhode Island Department of Education, and Jonathan Levi Architects. The goal is to create a modern, welcoming school that supports both students and the surrounding community.

The building will feature modern classrooms, a media center, music room, medical and student support spaces, a cafeteria with a performance stage, and a full gymnasium that can be used for school and community events. Designed to meet NE-CHPS Version 4.0 standards, the school focuses on energy efficiency, healthy indoor spaces, and flexible areas that adapt to today’s learning needs

Ongoing coordination between the project team, designers, and trade partners keeps the work moving smoothly while maintaining a strong focus on safety, quality, and schedule.

Project Highlights
  • Site Mobilization & Earthwork: Initial mobilization and site preparations were completed on schedule, allowing foundation work to begin promptly.
  • Foundation & Footings: Footings are in place, and construction sequencing has been optimized to maintain schedule integrity while mitigating risk.
  • Steel Erection: Coordination closely with structural subcontractors to ensure a seamless transition to steel erection, emphasizing safety and sequence clarity across trades.
  • Weekly Capital Planning Team Coordination: A standing weekly meeting with owner stakeholders, design partners, and the construction leadership ensures proactive resolution of RFIs, submittals, schedule considerations, and budget controls
Glen Drive Water Treatment Plant
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Upgrading Water Infrastructure to Improve Quality and Long-Term Performance

This project involves the construction of a 5,600-square-foot water treatment plant designed to improve water quality and modernize critical treatment processes. The new facility houses greensand filtration and granular activated carbon (GAC) pressure vessels, a backwash storage tank with pumps, and dedicated spaces for chemical storage, laboratory operations, controls, mechanical systems, and electrical equipment, along with essential building support areas.

Site improvements include installation of an enclosed aeration system for radon removal, settling lagoons with an infiltration basin for process discharge, an emergency generator for backup power, and supporting wastewater infrastructure, including a septic system, tight tank, and injection well.

The project also upgrades the existing pump station through removal of outdated chemical feed and electrical equipment and replacement of the high lift pumps to ensure reliable integration with the new treatment plant.

The Dede Thompson Bartlett Center for Admission and Career Education
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Building Innovative, Sustainable Spaces for Student Success

This project will deliver a modern, purpose-built facility that brings Vassar’s Admission and Career Education teams together in one location. Positioned along Collegeview Avenue, the project establishes a clear and accessible entry point to campus, offering flexible public spaces, interview rooms, and student work areas that enhance the experience of prospective students, families, and current students.

The building is designed around Vassar’s sustainability priorities. It is an all-electric facility featuring a high-performance envelope, triple-glazed operable windows, natural ventilation strategies, and rooftop solar panels. Site improvements such as permeable paving and upgraded storm-water systems further reduce environmental impact and support long-term operational efficiency.

Our approach focuses on high-quality execution, close coordination with campus stakeholders, and careful site logistics to limit disruption. Once complete, the Bartlett Center will serve as a welcoming, efficient, and future-ready hub that strengthens recruitment, supports student success, and reflects the College’s commitment to sustainable development. This project is under construction.

Project Highlights
  • Enhancing Accessibility and Infrastructure: Creation of a new North Gate for enhanced accessibility and reworking of parking facilities to alleviate congestion.
  • Architectural Innovation and Sustainable Design: Architectural innovation inspired by Vassar’s courtyard tradition, sustainable design featuring triple-pane wood windows and solar panels, all-electric systems for reduced greenhouse gas emissions, and incorporation of LED lighting and split ductless heating systems.
  • Preconstruction Planning and Collaboration: Preconstruction services encompassing constructability reviews and logistics planning. Collaboration with local subcontractors and specialty trades for project execution. Development of a detailed construction schedule and site logistics plan. Commitment to value engineering to optimize project budget and quality.
  • The building design includes a passive solar approach to help heat the spaces. The large windows on the south-facing facade bring in more light during the cooler months. The overhangs and louvers help keep direct sun out during the warmer season.
  • Operable windows high in the room create a stack effect that cools the room without the need for AC. The warmer air rises up and out of the room. Ceiling fans in the offices will keep the air feeling cooler and circulating. The building is all electric and includes a large solar array on the roof.
  • Super-insulation in the walls and ceiling will keep the heating and cooling systems smaller than typical. The walls are using R30 insulation, and the roof is R60. Triple-glazed windows will keep the heat in by creating an air barrier from the outside.
Shaker Museum
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Transforming a Historic Site into a Cultural Landmark

DOC is providing preconstruction and construction services for the new Shaker Museum in Chatham, NY. The project preserves Shaker heritage by retaining and fully renovating an existing, 120-year-old, 15,150-sf unreinforced masonry building. The design inserts a new structural system within the historic envelope to meet current code requirements and create a collections storage area and three levels of exhibition space.

A new 11,950-sf addition connects to the renovated structure, complementing the historic building while introducing a distinct contemporary architectural element. This addition forms the museum’s main entrance and offers an open, welcoming space that immerses visitors in Shaker culture. Its cellar level houses public restrooms, additional collections storage, a learning center, and major MEP systems.

The structural design incorporates a cast-in-place concrete first floor, with Levels 2 and 3 and the roof framed in structural steel and Cross-Laminated Timber (CLT) plates. The project is under construction.

Project Highlights
  • Open Communication & Coordination: DOC is collaborating closely with the architect, the MEP/FP engineer, and the structural engineer.
  • Complex Site Logistics: Managing tight-site constraints in a busy town, including exposed MEP/FP, minimal ceilings with CLT panels, and ongoing envelope and humidification work throughout museum spaces.
  • Preconstruction Highlights: Providing preconstruction services, including SD/DD estimates, constructability review, schedule/logistics input, and a value management log.
Convention Center Carpark
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New Parking Garage Increases Access and Drives Activity in Downtown Springfield

This project delivered a new five-story, 350,000 square-foot precast concrete parking garage with capacity for 817 vehicles, founded on more than 600 rigid inclusions to support long-term structural performance. The garage includes three enclosed stair cores and three elevators for safe, efficient circulation. The first level houses garage administration offices, MEP systems, storage areas, and a 9,500 SF shell space reserved for future retail use.

Interior construction emphasizes durability and low maintenance through the use of architectural precast walls, CMU partitions, gypsum wallboard assemblies, polished concrete floors, metal and GWB ceilings, and stainless steel doors and hardware. The scope included complete plumbing, fire protection, mechanical, electrical, data, communications systems, and substantial civil and site work to integrate the facility with the surrounding streetscape.

The project extends beyond the structure to enhance the public realm with an outdoor plaza featuring berm seating, pavers, planters, and a large concrete patio with lighting for public events. The Landing, located between the garage and the MassMutual Center, was converted into a pedestrian-only corridor with concrete sidewalks, new lighting, trees, and site furnishings.

  • Preconstruction Emphasis: Work included developing the DD budget, early design assist package for precast concrete, sitework and rigid inclusions, trade bid prequalification input, and the final GMP bid package for remaining trades.
  • BIM Services: Our team used laser scanning in conjunction with BIM to develop accurate models of the as-built condition to fully coordinate the new MEP and the finish systems.
  • Logistically Complex Site:
    • The site was located in a dense urban area bordered by heavily traveled sidewalks and roadways.
    • Required deep coordination with the City of Springfield and local agencies within the City.
    • The project team coordinated closely with the Mass Mutual Center as construction was adjacent to this very active public facility.
  • Utility Work: The existing structure was already demolished. DOC needed to provide major utility work to add structures and tie newly updated utilities to the existing ones per the Springfield Water and Sewer Department.
Goodell Hall Renovation, University of Massachusetts–Amherst
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Main Campus Building Gets a Major Renovation Providing a Centralized Space for Student Support and Activities

Goodell Hall is comprised of two parts: an original 3-story 34,323 GSF building constructed in 1934 and a 6-story, 95,442 GSF addition constructed in 1957.

The Goodell Hall renovation project located on the UMass – Amherst main campus includes alterations throughout all levels. The scope of work incorporates alterations to provide new offices, classrooms, break-out and lounge spaces. The existing stacks located at levels 4-6 were infilled at each level.

The scope of work throughout work areas consists of alterations to interior partitions, interior finish upgrades, millwork and furniture replacement, equipment upgrades, flooring and ceiling replacement, and alterations to the existing MEP and fire protection systems.

Project Highlights
  • Comprehensive Interior Renovation: The Goodell Hall project included extensive alterations for new offices, classrooms, and lounge spaces.
  • M/E/P and FP Upgrades: Upgrades to all M/E/P and fire protection systems.
  • Occupied Campus Construction: Construction in a busy, occupied campus area with high pedestrian traffic, requiring close communication and careful planning to minimize disruption.
  • Use of Advanced Technology in Preconstruction: Laser scanning of M/E/P spaces during preconstruction to sequence new and existing building systems, demonstrating the use of advanced technology to ensure efficient and effective renovations.

 

South Campus Utility Plant and Distribution System
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Modernization of Campus Heating and Cooling System Decreases Carbon Emissions

Part of a broader master plan, Phase I of this project consisted of the new construction of the hot water and chilled water plant on the South Campus. Trinity selected DOC to provide preconstruction and construction services.

During preconstruction, our team implemented the initial estimates, provided constructability reviews, and formulated site logistics, emphasizing safety since the college was active during construction.

While performing the construction phase, DOC’s main logistical challenge was completing the work on an active campus when renovating the residential community courtyard in Phase II. To ensure safety compliance with the college’s desired schedule, DOC adjusted working hours and provided weekly logistics plans to phase the work around the school calendar.

Project Highlights
  • Logistical Coordination: During preconstruction, DOC utilized a 360-degree BIM walk-through, building scans, deploying our drone services, and on-site test pit investigations.
  • Key Scope Aspects:
    • New hot and chilled water plant with underground distribution piping throughout the South Campus.
    • Retrofitting individual mechanical and electrical rooms in seven buildings.
    • Replacement of the main switchgear paired with a new MV switch & transformer at the utility plant—updates and expands the campus electrical network.
    • Installation of adiabatic cooling towers on the rooftop of the new Utility Plant which is adjacent to the Buildings and Ground Facilities.
    • Replaced the aging steam systems with efficient plate and frame heat exchangers that service heating and domestic hot water.
    • Revamp of the first year residential community exterior quad, which includes new retaining walls, stairs, handrails, pavers, lighting, and plantings.