Novel corrugated metal building structural unit

A corrugated metal building panel having two interlinked longitudinally extending major waves disposed about a neutral axis, each such major wave being provided with a plurality of spaced-apart, discontinuous web zones, each web zone comprising a plurality of interlinked longitudinally extending wave-like stiffeners superposed on each major wave and following the general corrugated pattern of the major wave thereof, and a plurality of spaced-apart flange zones, said flange zones comprising spaced-apart flattened areas interconnecting curved portions superposed on each major wave, said flattened areas being deformed from the general corrugated pattern of the major wave of said panel and spaced-apart flange stiffeners, said flange stiffeners projecting from the exterior of the curvature of said major waves and always being directed towards the neutral axis of the panel, whereby the local buckling factor is optimized, and the section modulus and the moment of inertia are increased, and consequently the strength and rigidity of the panel is increased.

A corrugated metal building panel having two interlinked longitudinally extending major waves disposed about a neutral axis, each such major wave being provided with a plurality of spaced-apart, discontinuous web zones, each web zone comprising a plurality of interlinked longitudinally extending wave-like stiffeners superposed on each major wave and following the general corrugated pattern of the major wave thereof, and a plurality of spaced-apart flange zones, said flange zones comprising alternating spaced-apart flattened portions, said flattened areas being deformed from the general corrugated pattern of said major wave of said panel and spaced-apart generally semi-circular flange stiffeners, said flange stiffeners projecting from the exterior of the curvature of said major waves, and always being directed towards the neutral axis of the panel, whereby the local buckling factor is optimized, and the section modulus and the moment of inertia are increased, and consequently the strength and rigidity of the panel is increased.

A corrugated metal building panel having a single longitudinally extending major wave disposed about a neutral axis, said major wave being provided with a plurality of spaced-apart, discontinuous web zones, each web zone comprising a plurality of interlinked longitudinally extending wave-like stiffeners superposed on each major wave and following the general corrugated pattern of the major wave thereof, and a plurality of spaced-apart flange zones, said flange zones comprising spaced-apart flattened portions, said flattened portions being deformed from the general corrugated pattern of the major wave of said panel, and spaced-apart generally semi-circular flange stiffeners, said flange stiffeners projecting from the exterior of the curvature of the major wave and always being directed towards the neutral axis of the panel, whereby the local buckling factor is optimized, and the section modulus and the moment of inertia are increased, and consequently the strength and rigidity of the panel is increased.

The corrugated metal building panel of claim 14 wherein said flange zones comprise a pair of spaced-apart generally semi-circular stiffener elements separated by flattened stiffener elements at the troughs and the crests of the major waves.

A corrugated metal building panel having three interlinked longitudinally extending major waves disposed about a neutral axis, each such major wave being provided with a plurality of spaced-apart, discontinuous web zones, each web zone comprising a plurality of interlinked longitudinally extending wave-like stiffeners superposed on each major wave and following the general corrugated pattern of the major wave thereof, and a plurality of spaced-apart flange zones, said flange zones comprising spaced-apart flat areas interconnecting trapezoidally-shaped portions superposed on each major wave, said flattened areas being deformed from the general corrugated pattern of the major wave of said panel and spaced-apart trapezoidally-shaped flange stiffeners, said trapezoidally-shaped flange stiffeners projecting from the exterior of the curvature of said major waves and always being directed towards the neutral axis of the panel, whereby the local buckling factor is optimized, and the section modulus and the moment of inertia are increased, and consequently the strength and rigidity of the panel is increased.