Abstract: A building structure requiring virtually no fasteners for its assembly, composed generally of a plurality of mutually interlocking floor panels which rest upon a plurality of floor stringers, a plurality of uprights interlocked with respect to the floor panels, a plurality of wall panels interlocked with respect to the uprights, a header rail on each left and right wall of the building structure fastened to adjoining uprights and interlocked with adjoining sidewall panels, a plurality of mutually interlocked roof trusses which are fastened to the header rails, and a plurality of roof panels interlocked with the roof trusses and adjoining rail header. The aforesaid interlocking relationships are provided by a male-female structural interrelationship between adjoining interlocking components. The building structure according to the present invention is further preferably provided with a self-leveling feature which connects with the floor stringers and floor panels.

Abstract: An expansion joint sytem (10) spans a slot (12) of adjacent concrete slabs (14, 16). The system includes a boxed out area (22) adjacent the slot. A plate member (32) extends across the slot. A preformed resilient pad (42) is positioned above the plate member. Nosings (64) of resilient material are bonded to the pad and to the surfaces bounding the boxed out area. The pad has a cross sectional configuration that achieves enhanced bonding to the nosings, greater flexibility and resistance to failure in cold weather, and greater elongation without failure.