The Middle School on the Wisconsin Avenue campus of the Sidwell Friends School in Washington, D.C., is a LEED Platinum project that includes general classrooms, science and art classrooms, drama performance and rehearsal space, a library, staff offices, and the campus central utility plant. BBA provided engineering design for the sustainable, award-winning Middle School project.
A number of design concepts were incorporated into the project to optimize energy performance. Basic measures that would be most applicable to other projects included a superior building envelope, glazing and shading selected to optimize light transmission and minimize summer heat gain; energy efficient lighting with daylighting and occupancy controls; HVAC economizer, demand controlled ventilation, variable speed fans and pumps, energy recovery, and high efficiency boilers and chillers.
More exotic design features contributing to the LEED rating were mixed-mode ventilation chimneys, a dedicated outdoor air ventilation system and a photovoltaic array. Energy modeling of the building indicates that these measures result in energy savings of approximately 60 percent when compared to ASHRAE 90.1 standards. The project was recognized by the AIA’s prestigious Committee on the Environment (COTE) as one of the Top Ten Green Projects in the nation in April 2007.