Two-story build in DC (IMAGE) DOE/Oak Ridge National Laboratory Caption The Structural Building Components Association’s two-story duplex was assembled with ORNL’s real-time building evaluator tool. The building and tool will be on display during the Innovation Housing Showcase on the National Mall. Credit Diana Hun/ORNL, U.S. Dept. of Energy Usage Restrictions None License Original content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.