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Natural Structures

PSU's relationship with natural building began in the summer of 2005 with the construction of a Cob Dialogue Dome and Cob Oven. Cob is a natural building material similar to adobe made with a mixture of sand, clay, and straw. The Dialogue Dome and Oven projects were originally initiated by PSUrth, a PSU student group, in collaboration with PSU Facilities & Planning, the PSU Sustainability Group, City of Portland's Bureau of Planning & Sustainability, and City Repair Project, a local non-profit community development organization. The large, tiered cob bench located beneath the Millar Library awning serves as a community gathering and study space. The project was completed in collaboration with Freshman Inquiry and Senior Capstone classes, the Sustainability Group, and City Repair Project.

• 2005 Cob Construction

• Community engagement focus

• Dialogue Dome & Cob Oven

• Cob Bench

Key strategies include: natural building materials which are minimally processed, plentiful, or renewable; ecoroof to mitigate stormwater and protect structure from rain exposure, which can cause deterioration over time.