Pole framing or post-frame construction is a simple, cost effective durable design that was developed during the 1930s. Originally constructed with round utility poles, today's pole buildings utilize laminated columns or square posts. The poles or posts are joined to create a building frame that siding is attached to and rafters are rested upon and secured to. Pole construction has commonly been used to build garages, agricultural and equestrian structures, and airplane hangers, but can also be used in the construction of low rise commercial or residential structures.