Abstract: A building construction panel of the type having exterior and interior metal skins enclosing a foam core and having, at their edges, mating elements for sealing the panels in edge-to-edge relationship. The improvement relates to a sealing construction that insures maintenance of the seal irrespective of wide variations in the gap between adjoining attached panels. Also the core is maintained encapsulated by a plastic sheet which is uniquely connected to the edges of the outer and inner metal skins.

Abstract: A two-span wall panel construction includes a plurality of spaced, horizontal structural girts with liner panels secured between each three adjacent girts. Horizontally extending subgirts are attached to the liner panels and exterior panels are secured to the subgirts. The exterior panels are corrugated and mounted so that the corrugations extend parallel to the vertical structural columns. A plurality of notches is located on the outer surface of the exterior panel. The notches are aligned midway between the horizontal structural girts and can be varied in depth to cause the exterior panel to fail at the notch when subjected to a predetermined external load. Additional notches can be positioned on the inner surface of the exterior panel in alignment with the other notches. The adjacent, vertical liner panels are positioned in slightly spaced relationship at the end girts and the exterior panels are positioned in overlapping and unattached relationship at the end girts.

Abstract: A two-span wall panel construction includes a plurality of spaced, horizontal structural girts with liner panels secured between each three adjacent girts. Horizontally extending subgirts are attached to the liner panels and exterior panels are secured to the subgirts. The adjacent, vertical liner panels are positioned in slightly spaced relationship at the end girts and the exterior panels are positioned in overlapping and unattached relationship at the end girts. Clips for holding the liner panels are secured to the end girts between the adjacent liner panels. These clips have angular flanges which pinch the adjacent liner panels against the end structural girts. External forces of predetermined magnitude cause the liner panels to deform about the middle girt as the liner panels pivot about and release from the clip flanges while the overlapping exterior panels simultaneously pivot and release at their overlapping end.