One of 100 projects to beta-test LEED® Version 4, Capitol Tower is one of three projects in the world to achieve LEED v4 Core and Shell Platinum Pre-Certification. While the project could have pursued certification under the current version of LEED, the developer, Skanska, elected to pursue LEED v4, the newest, and significantly more aggressive, version of the rating system.
To achieve platinum certification, the project needed to achieve most of the revamped Materials & Resources credits, which included the 'whole building life cycle assessment' credit. Walter P Moore led the effort on this, and to date, this is the only team to attempt this credit in the LEED v4 Beta program. This credit recognizes a building's reduction in the impacts associated with the manufacturing and erecting materials. Walter P Moore used the ATHENA Impact Estimator to help quantify the significant sources of environmental impacts. Based on the studies, the team developed a strategy of aggressive cement minimization, which lead to a 19% reduction in Global Warming Potential, a 12% reduction in acidification, and a 33% reduction in the production of ozone-depleting materials.