Abstract: A structure is provided with base platform connectors which may be mounted on concrete pilings and which may join multiple floor rafters. Corner columns are connected to the top of certain platform connectors. The corner columns include vertical beams having a modified C-shaped cross-section to allow the sheeting to be attached directly thereto. Each corner column includes two vertical beams affixed back-to-back with spacers therebetween. A knife plate projects from the top of each column and is received within a lower end of a rafter. Hip and valley rafters include support beams having a modified open C-shaped cross-section. Each support beam receives purlins which provide a flat surface on the top and bottom sides thereof for receiving sheeting. Main frame rafters and wall columns are provided between the hip and valley rafters and are formed from support beams having a straight C-shaped cross-section to receive the purlins and exterior studs.