RTM Engineering Consultants provided MEP/FP engineering services for a new 12-story, 131,181-square-foot residential complex in the heart of Ann Arbor, Michigan. Because Ann Arbor requires buildings to meet a set minimum as it relates to energy efficiency, sustainability was top-of-mind for the 124-unit project.
The complex houses a variety of layouts, including studios, two-, three-, and four-bedroom options, and multiple amenity spaces such as a club room, fitness center, spa, business center, an outdoor terrace, and rooftop lounge area with an infinity hot tub and fireplace. It even includes a two-level, 34,244-square-foot underground parking garage on site.
Various electrical and mechanical design factors were taken into consideration to meet sustainability standards. For instance, energy-efficient LED lighting fixtures were installed throughout the building, while a water-source heat pump was utilized for the primary heating and cooling of the building. This included a hydronic loop being tempered by a cooling tower and condensing boiler system.
“This design is the most energy efficient for a building of this size because it allows for the exchange of unwanted heat in one space to be used in another area that requires it,” said RTM Project Engineer Andrew McMahon, PE, LEED AP BD+C. “For example, warm air during the summer months can be utilized in heating for domestic water usage. The loop design minimizes the use of the boiler and cooling tower to provide a highly effective mechanical system.”
Ventilation is provided from a make-up air unit on the roof, which had to be custom built to meet the height requirements of the project site. As a result, RTM was able to modify the equipment to maximize its efficiency and to accommodate the various pressure imbalances within a high-rise building such as stack effect, wind effect and piston effect.
The project has broken ground and construction is slated to be completed in 2018. Click here to learn more about RTM’s residential engineering expertise.