Balfour Beatty Construction completed work on the $95-million Perot Museum of Nature and Science in October 2012.
The museum construction was almost onion-like; the project team built a concrete interior structure surrounded by large steel framing to support the massive precast panels, which completed the exterior layer of the building. The weight of the precast and the large floor-to-floor heights had a direct correlation to the size of the steel members required to support the mass, which in turn had a direct effect on the heavy concrete skeleton.