The OnCenter is a convention center facility located in Syracuse, New York. The main roof featured an area of approximately 58,000 square feet located over the convention area that was being considered for a green roof installation on top of the existing roof framing.

The main roof structure was composed of three-inch light gage metal deck supported on steel wide flange beams spaced at 10 feet on center. The wide flange beams were then supported by large steel trusses with a clear span of 160 feet, spaced at 30 feet on center. The truss chord and web members were composed of wide flange rolled steel sections.

Our evaluation of the existing roof framing cleared the roof for an additional 23 pounds per square foot of green roof material.