There might not have been any fanfare at the construction site for Edward P. Evans Hall on February 10, but the date was a significant one in the history of Yale SOM's new campus. It was the day the building was "topped out," when the last beam of structural steel was fastened in place. As winter transitions to spring, construction will continue at an aggressive pace, with crucial work both on the inside and outside of the 242,000-square-foot building. With the completion of the steel frame, white protective material has gone up around the structure to allow workers to pour concrete for the floors while sheltered from the winter elements. As of early March, this process was complete on the south side of the building; concrete work is now focused on the northern part. Once the concrete is set, workers can spray on fire protection and begin the "roughing-in" part of the enterprise. Electrical conduits, air ducts, and plumbing pipes are being installed in the southern section. The first wall studs are also going up. On the outside of the building, roof work began in February and should be completed by the end of April. The school is using white EPDM, sheet material that reflects heat and will help to earn the building its LEED Gold energy efficiency rating. Steel frames are going up for the glass that will surround the courtyard. Over the next several months, workers will begin hanging interior and exterior glass, a task that should wrap up around Thanksgiving. "This is a large and very complex project, but we're on schedule," says Jon Olsen, the senior project manager working on Evans Hall. Photos by Phil Handler/Fly on the Wall Productions.