US Patent 8381452 Structure having a convertible roof and sidewall

A foundation system and a roof system are especially useful for flexible indoor/outdoor space structures. The foundation system has adjustment features for leveling of flexible structures. The roof system features independent roof segments. The foundation system includes one or more foundation members which have a frame, a base and an adjustable height member. Also disclosed are drive, connection, level sensing and control elements for the foundation system. The roof system includes a fixed bean with roller tracks, a set of overlapping roof segments, and a header beam also with roller tracks.