Hassalo on Eighth
In the midst of a population boom, Portland has found itself in need of more residential space. With the city’s infrastructure not able to keep up with that need, new buildings must find ways to accommodate a growing population while not damaging the surrounding environment. Hassalo on Eighth was conceived as an EcoDistrict – a series of buildings that share sustainable energy, water, and waste infrastructure – to at once ease the city’s housing squeeze, revitalize a neighborhood in need of development, and allow its tenants the ability to reduce their carbon footprint by nearly a third.
Glumac provided mechanical, electrical, and plumbing design, energy analysis, technology integration, lighting design, and commissioning services on the Hassalo on Eighth project. With a focus on water reclamation to reduce increased strain on the Willamette River, which runs directly through Portland, Glumac partnered with Biohabitats to design a waste water system that cleans sewage using bacteria in an artificial tidal wetland, which appears as typical planting beds in the landscape between each building. It has the potential to transform up to 54,000 gallons of sewage into reusable gray water every day, which is then used in toilet flushing, cooling, and irrigation, with any available excess used for groundwater recharge. A central condenser water loop connects the retail spaces in each building, facilitating thermal energy sharing throughout the district. In addition, the mechanical plant in an existing 12-story commercial building on the site was upgraded to serve commercial spaces in the new buildings.
Based on the savings gained in water, sewer, and system development charges, Hassalo on Eighth’s water system will pay for itself in four years and has achieved three LEED Platinum certifications.
In 2017, the project was named as the USGBC’s LEED for Homes Project of the Year.
Size: Four City Blocks (592,616 sf of housing; 31,707 sf of retail; 26,400 sf retail tenant; 271,582 sf of office)
Cost: $192 million
Completion Date: 2015
Architect: GBD Architects
Contractor: Turner Construction
Portland has a water problem…
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