Three20 Apartments


Located in the heart of Capitol Hill, this new 139,000 square-foot, mixed-use building houses 134 apartment units, including four live-work units at the ground floor and an accessible roof deck on six residential levels with two levels of underground parking. Street-level retail helps integrate this building with its surrounding neighborhood, making it a community destination. Built on a zero lot line next to an existing apartment complex, the building required a full width-full height exterior wall that would not be accessible for the life of the structure, yet would need to provide a durable waterproof system for the duration of the facility. PCS engineers developed a prefabricated masonry wall system with critical input from the contractor and subcontractors that could be lifted into place and anchored to the wood floor system, thereby meeting the weatherproofing requirements set by the owner and the envelope consultant.

Photo credit: Janette Ryan