Abstract: A building panel comprising a pair of parallel skins of fireproof and ruptureproof synthetic-resin material sandwiching a foamed synthetic-resin mass is provided at least along its lower edge with a gas-porous body between the skins which defines an empty cavity running the full length of the mass between the skins. A rigid edge stiffener between the skins underneath the mass and the body is formed with throughgoing holes allowing gas under pressure between the skins to escape to the exterior. The edge stiffeners are formed with vertically open bores and the panels so formed are mounted in place by means of rods which are slipped through synthetic-resin tubes imbedded in the slabs above and below the panel. Thus a panel is tipped into place, pivoting upon hinged upper ends of the rods projecting from below, and when in place further rods are dropped down from above into the holes in the upper edge stiffener so as to secure the panel tightly in place.

Abstract: A one-story building having a concrete foundation, a wooden roof and interior and exterior walls of precast concrete panel construction, the walls being formed from precast concrete panels and installed in place without benefit of rigid interconnecting joints therebetween. Additionally, the wall panels are connected to the foundation at their bottom ends, and to the wooden roof at their upper ends, by means of nonrigid, as opposed to rigid, connection. Each of the exterior wall panels has an inner, structural slab of steel-reinforced concrete, a thin intermediate layer of a compressive, insulative material and an equally thin outer layer, or skin, of wire-reinforced concrete. The interior walls of the building are interrupted by door openings, or the like, to permit expansion and contraction of each wall segment as an independent unit.