The Bullitt Center, a six-story heavy timber building recently completed in Seattle, is predicted to be the world’s most energy-efficient commercial building. It has been designed to last 250 years and to achieve the highest benchmark of building sustainability—Living Building Challenge (LBC) certification. A performance-based certification program, the LBC requires buildings to be evaluated after one year of occupancy prior to certification, against criteria that include 100% of energy demands met with on-site renewable energy generation and 100% of water needs met by on-site rainwater collection. In this presentation, Project Architect Brian Court will give a short overview of the LBC, discuss the design strategies for the Bullitt Center, and highlight structural and environmental virtues of the heavy timber structural system such as renewability, contribution to energy efficiency, and light carbon footprint.

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