Action on cradle-to-initial occupancy carbon dioxide emissions factors, coupled with the potential for fundamental changes in project planning and procurement, qualify 2019 as a watershed in the green building movement. Architectural, engineering and construction (AEC) community leaders are taking stands impacting cement, concrete, steel, aluminum and wood more than the U.S. Green Building Council's LEED v4 rating system, whose 2014-2016 implementation ushered broad Environmental Product Declaration (EPD) development and release. A deep EPD library built over the past five years, plus increasingly sophisticated methods of gathering and validating material or product environmental metrics, will empower design professionals who are personally concerned with atmospheric CO_2 levels or acting on behalf of carbon-minded owners or clients.
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