While some developers look to go higher and higher, there is also a growing camp with an increasing demand for longer, column free spaces; structures which either provide maximum flexibility for the interiors or the perfect, unobstructed spectator view.

From aircraft hangars to stadium and arena roofs, long spans demand close attention to unbalanced loads caused by wind pressures, snow drifts or construction materials acting on the roof or loads hung from roof framing. Construction of these structures becomes complex and a significant driver of both cost and schedule….