Pike Passive: A Case Study for Multifamily Passive House Construction

11:15 am, Room 110 - Application

Aaron Swain & Emily Doe, Weber Thompson

Pike Passive (now branded under the project name Solis) is a 45-unit condominium building currently under construction in Seattle’s Capitol Hill neighborhood. The project is targeting an EUI of 18 and is pursuing Passive House (PHIUS+ 2015) certification for multifamily buildings, one of the most rigorous and effective energy standards in the world with stringent requirements minimizing energy use. Once completed, Pike Passive will be among the first PHIUS+ certified multifamily buildings in the country. This presentation will share the specific energy saving strategies utilized in the project including an enhanced building enclosure, thermal envelope & air barrier; managed solar heat gain; and a balanced mechanical system.

The project team will discuss the design and energy modeling approach, challenges encountered and resolved with building code officials, constructability considerations, and will review key differences between single family and multifamily passive house construction.

The format will be a joint presentation from the architect involved in the design and entitlement phase, and the architect involved in construction documents and construction administration, with an extensive Q & A with the audience.

Learning Objectives:

  • Participants will be able to describe key energy efficiency strategies for multifamily passive house construction, including a continuous air barrier, managed solar heat gain, and a balanced mechanical system.

  • Participants will be able to explain key differences between multi-family and single-family passive house design strategies.

  • Participants will be able to identify potential building code challenges and possible solutions for passive house design strategies.

  • Participants will be able to identify architectural challenges identified and solutions implemented to achieve the Passive House design requirements

Aaron has built a resume in master planning, sustainable mixed-use design, and urban design. His passion in architecture can be found in projects that relate to urban density—often including some aspect of mixed-use occupancies, and restoration/renovation of existing structures—and integrated sustainable building strategies. Aaron is a licensed architect in the State of Washington, a Certified Passive House Consultant and has LEED GA certification from the USGBC.

An Architect and Associate at Weber Thompson since 2012, Emily’s technical, artistic and detail oriented work method has made her a dynamic and valued team member. Emily has over ten years of experience in all phases of design from pre-design through construction administration working on a variety of project types including mixed-use, multi-family, and higher education. She is the technical architect on the under-construction Pike Passive Condominiums which is one of the first multifamily buildings in the country to pursue the rigorous certification from Passive House US and is designed to use 70% less energy than a conventional multifamily building.