Commercial | Office

Home to 11 federal agencies, the Byron G. Rogers Federal Office Building in downtown Denver was targeted by its owner, the U.S. General Services Administration, for an extensive modernization project to significantly improve energy efficiency and deliver advanced updates to this important example of 1960s-era Federal architecture. This design-build project involved comprehensive upgrades to all major building systems housed within the 18-story, 494,000-square-foot office tower and minor improvements to the adjacent courthouse. The upgrades are projected to reduce energy use in the office tower by nearly 70 percent relative to current levels.

In addition to improving building envelope insulation, the most significant energy savings were achieved by implementing a chilled-beam system to replace the building’s inefficient, inflexible mechanical system. A chilled-beam system is an advanced method for distributing heating and cooling throughout the building with minimal energy waste. It primarily uses water at a moderate temperature to condition building spaces. After capturing heat generated by building occupants, computers, lighting, and solar gain, a thermal tank in the basement stores and circulates this heat through the building’s chilled-beam system as needed.

The retrofitted building features additional energy-saving technologies, including 100% LED lighting, enhanced daylighting, and roof-mounted solar thermal collectors that provide all of the building’s domestic hot water. Water-conserving strategies are expected to reduce water use by 40 percent. The comprehensive modernization positions this Federal facility as a model for sustainable government building operations while preserving its architectural significance.

As the project’s mechanical, electrical, and plumbing engineer, RMH provided comprehensive MEP engineering services for this transformative modernization project.

The Southeast Wyoming Welcome Center is a 27,000-square-foot multi-use facility that blends sustainability, education, and hospitality. More than a rest stop, the center houses interpretive museum displays, the Wyoming Office of Tourism, and warehouse space for the Wyoming Department of Transportation.

RMH worked closely with the owner and design team to deliver a highly energy-efficient building powered by renewable resources. Photovoltaic panels installed on the roof and walls generate 27 kW of electricity, while five on-site wind turbines contribute additional zero-emissions power, offsetting over half of the building’s electrical demand.

To maximize HVAC efficiency, RMH designed a ground source heat pump system with more than 11 miles of geo-exchange coils buried beneath the 26.6-acre site. This system leverages the earth’s stable temperature to provide reliable heating and cooling year-round.

Our team engineered thermal displacement ventilation in public and office areas to improve indoor air quality and occupant comfort. This low-energy system introduces air at floor level, allowing it to rise naturally and exit through ceiling vents. Daylight harvesting strategies, supported by the building’s long axis and narrow footprint, reduce reliance on electric lighting. High-efficiency fixtures and controls supplement natural light when needed.

Photo credit: AndersonMasonDale Architects and Sampson Construction

Danone, one of the world’s largest food and beverage companies, completed a renovation to consolidate two separate office spaces into a unified 36,000-square-foot building. This transformation aimed to accommodate the evolving demands of the workplace and to support a growing number of employees working hybrid schedules. The new design provided flexible office spaces for employees, allowing them to work collaboratively regardless of their positions. The project team completed while the facility was fully operational.

RMH delivered comprehensive demolition design drawings and executed electrical load and lighting calculations for the electrical design. Our team designed power systems to support collaborative spaces, a coffee bar, and computer equipment. We also implemented interior lighting and controls that complied with local building codes, updated the existing power distribution system diagram, and prepared a fire alarm performance specification.

On the mechanical side, RMH produced demolition design drawings and conducted HVAC load calculations while modifying air distribution, heating water piping, and DDC controls to accommodate the new layout, including large conference rooms, collaboration areas, and open and individual office spaces. RMH designed the mechanical system to incorporate rooftop units with VAV and fan-powered VAV boxes. Additionally, we developed a fire protection performance specification to ensure the safety and efficiency of the renovated space.

Originally a World War II munitions plant, Building 48 has been transformed into a LEED Gold-certified and SITES Silver-certified office for the Department of the Interior’s Interior Business Center.

The project involved converting a 1940s-era warehouse into a modern, energy-efficient workspace. RMH designed advanced mechanical, electrical, and plumbing systems that facilitated the building’s net-zero energy profile. A key feature was installing a Water Source Heat Pump (WSHP) system, which included perimeter single-zone units and additional units for interior zones and ventilation. This system capitalizes on Colorado’s dry climate through direct evaporative cooling, achieving a 75% reduction in energy consumption in shoulder seasons.

The electrical design focused on complete building electrification, incorporating three 240kW electric boilers that work with the WSHP. RMH kept the switchgear capacity below 4000A, creatively repurposing an old transformer for EV charging stations. A 200kW solar array on the roof and site solar at the Denver Federal Center supplied 100% renewable energy.