1881 Pierce – HVAC Replacement Commissioning

The State of Colorado and 360 Engineering have a strong partnership, built throughout multiple mechanical engineering projects completed for the Colorado Capitol Complex buildings and other State buildings. The State hired 360 Engineering to provide HVAC Commissioning Services for Phase 2 and 3 of an HVAC Replacement at 1881 Pierce Street, in Lakewood, Colorado. The Phase 2 project scope involved replacement of two air handling units (22,200 & 24,475 CFM) with hot water and chilled water coils and the two associated return fans. The Phase 3 project scope included replacement of approximately 50 VAV boxes.

360 Engineering developed the detailed commissioning plan establishing individuals’ roles and responsibilities in the commissioning process, requisite documentation, meeting schedule, equipment readiness prerequisites, equipment start-up requirements, functional performance test procedures, acceptance criteria, and O&M training obligations. 360 Engineering reviewed design documents, equipment submittals, system verification checklists, test and balance procedures, and functional performance test results.

During commissioning, 360 Engineering discovered the like for like replacement of the air handling unit did not achieve the fan performance specified and further examination revealed an existing section of ductwork was short circuiting the return fan and needed to be corrected by the design engineer to achieve proper operation.

South Adams County – Water & Sanitation District Administration Building

The new 13,000 square-foot South Adams County Water and Sanitation District Administration building was constructed on the site of the District’s existing facilities. Construction was phased to allow administrative functions to remain operational until transition to the new space. The new building, twice the size of the original, is expected to operate at similar utilities expense.

Mechanical design for the project consisted of utilizing a large concrete reservoir system as the heat sink for a heat pump system. The reservoir water is pumped into the building, through a heat exchanger, and then returned to the reservoir with an overall temperature rise of less than 2° F on design day conditions. A separate closed loop system of condenser water is located within the building and is pumped through the heat exchanger and out to the heat pumps located throughout the building. An initial study for the geothermal system was conducted to determine the energy savings over the life of the system in relationship to the cost of the system and viability of the system. After understanding that the reservoir could be emptied at any time during the year for maintenance, a make-up water loop was installed to maintain a constant flow of water to the heat exchanger during maintenance periods.

The overall building was also reviewed and studied with the architect to site the building with reduced window exposure in the summer, utilizing overhangs to shade the south and west windows, keeping a careful eye on the window to wall ratios, and evaluating the insulation used in the walls and roof for a highly energy efficient building.

Mental Health Partners – MHP – Tenant Buildout

MHP is a private, non-profit corporation offering a growing list of comprehensive mental health services to clients throughout Boulder and Broomfield counties. To bring their 6,300-square-foot, 1950s-era metal building up to the task, this project entailed a complete remodel and tenant build-out. 360 Engineering designed new mechanical and plumbing systems including new rooftop units (RTUs) and plumbing. The resulting energy enhancements are 20% savings on energy costs annually.

Arapahoe/Douglas Mental Health Network – Building Assessment

For this mental health provider located in south metro Denver, 360 Engineering provided a thorough facility assessment of existing building conditions including electrical, mechanical, plumbing, and fire alarm systems. The assessment included detailed site observations including visual observations of the existing cooling tower, condenser water pumps, water source heat pumps, and exhaust systems. The team documented conditions, then input all data – including any existing HVAC information — into AutoCAD drawings for the owner’s future use. All mechanical system findings were compiled into a single, comprehensive report of observations from the architect and electrical engineer, along with 360’s mechanical engineer.

Vista Eye Care – Expansion and Remodel

Vista Eye Care in Thornton, Colorado, offers a full range of optometry and eye care services including comprehensive eye exams, Lasik consultations, and other specialty eye health testing. During their expansion, which added a new restroom, break room, and exam room sinks, 360 Engineering provided engineering services including new mechanical and plumbing systems designed to accommodate the additional space.

Hosting.com – Data Center Expansion

Hosting.com owns and operates six data centers across the United States, including one in central Denver. 360 Engineering provided mechanical and plumbing engineering services for an expansion of this facility, including installation of a new cooling and power infrastructure to accommodate 40,000 square feet of co-location space. Because the building operates with N+1 redundancy (a form of resilience that ensures system availability in the event of component failure), the design incorporated an additional generator, new uninterruptible power supply (UPS), and a new battery system. In addition, new chilled water lines were routed to computer room air conditioning (CRAC) units, with sufficient future capacity to support an additional five CRAC units; ventilation was added to the new battery room; and a new fuel system was designed for the existing generators with capacity for future expansion. The expanded and re-engineered data center can now take advantage of industry-leading Green Design standards, achieving stable temperature, humidity, and airflow management that supports data protection and energy efficiency.

Colorado Center – Tenant Buildouts and Renovations

The Colorado Center office and retail complex, located between downtown Denver and the Denver Tech Center, consists of Tower I, Tower II, newly completed Tower III, and the Annex Building. 360 Engineering has thus far completed nearly 30 tenant buildouts and renovations within these buildings, providing both mechanical engineering design and consulting services. In addition to multiple projects for office spaces, 360 provided HVAC and plumbing system design for a 4,900-square-foot fitness center on the first floor of the Annex Building, which included new restrooms and locker rooms.

Arapahoe County – District Attorney’s Office

Arapahoe County remodeled the existing 11,145-square-foot District Attorney’s Office located on the first, second, and third floors of the County building. The project included the addition of new offices, new cubicle furniture layouts, and new conference rooms. 360 Engineering evaluated and modified the mechanical system including the addition of new fan coil units, redistribution of the supply air ductwork and diffusers, relocation of temperature controls, and coordinating the diffuser layouts with the architect and electrical engineer to prevent conflicts with lighting or other ceiling features. The mechanical system primarily uses four-pipe fan coil units (FCUs), except an existing constant volume unit serving part of the third floor was converted to a variable volume and temperature (VVT) system.

Arapahoe County – Clerk and Recorder’s Office

The Arapahoe County Clerk and Recorder’s Office added a new training room, two new offices, a new conference room, and two one-stall restrooms to an existing warehouse. 360 Engineering designed the new mechanical and plumbing systems for the 2,600-square-foot build-out, which involved new rooftop units (RTUs) for the training room, redistribution of the existing RTU supply ductwork for the new conference room and two new offices, new exhaust fans for the restrooms, a new plumbing system for the entire space, and performance specifications for the fire protection system.

South Adams County – Fire Administration Headquarters

South Adams County Fire Protection District, serving Commerce City, Henderson, and parts of unincorporated Adams County underwent an expansion, including improvements to existing fire stations and the construction of a new centralized headquarters building. The ground-up headquarters building design consisted of three floors totaling approximately 14,000 square feet. The basement included an archive storage space, mechanical, electrical, and water entry rooms, and an unassigned area to be utilized by the building owner for future use. Floors one and two focused primarily on office space and a board room with restrooms, break rooms, and conference rooms throughout. Mechanical and plumbing systems were designed for the building, including a geothermal ground source heat pump system with a bore field.