Abstract: A panel of thin sheet metal is roll-formed into a beam having upper and lower first flange portions integrally connected by a web portion. The first flange portions are reinforced by corresponding second flange portions which may be separate or formed from the panel and folded back onto the corresponding first flange portion. The upper and lower flange portions may project in opposite directions from the web portion providing the beam with a Z-shaped cross-sectional configuration to facilitate close nesting of the beams in a stack, or the web portion may be disposed in the center of the flange portions to provide an "I" cross-sectional configuration. A plurality of parallel spaced stiffening ribs are formed in the web portion, and longitudinally extending stiffening ribs are formed in the flange portions.

Abstract: An elongated beam is constructed from a sheet metal panel and has upper and lower flange sections integrally connected by a web section. The web section has upper and lower inclined web portions which project in opposite directions from a vertical intermediate web portion and cooperate to provide the beam with a generally Z-shaped cross-sectional configuration to facilitate stacking of a plurality of beams in interfitting nested relation. The upper and lower flange sections are stiffened by members which may be longitudinally extending sheet metal strips or longitudinally spaced stiffening elements, and the upper and lower flange sections and adjacent portions of the web section are formed slightly different in size to permit interfitting of mating overlapping end portions of two longitudinally aligned beams after one beam is inverted relative to the other.

Abstract: A panel of thin sheet metal is roll-formed into a beam having upper and lower first flange portions integrally connected by a web portion. The first flange portions are reinforced by corresponding second flange portions which may be separate or formed from the panel and folded back onto the corresponding first flange portion. The upper and lower flange portions may project in opposite directions from the web portion providing the beam with a Z-shaped cross-sectional configuration to facilitate close nesting of the beams in a stack, or the web portion may be disposed in the center of the flange portions to provdie an "I" cross-sectional configuration. A plurality of parallel spaced stiffening ribs are formed in the web portion, and longitudinally extending stiffening ribs are formed in the flange portions.

Abstract: A series of rectangular sheet metal roof and wall panels include generally flat inner and outer corrugated skin portions rigidly connected by corrugated web portions to form parallel spaced primary corrugations. A fabricated sheet metal ridge beam rigidly connects the inner skin portions of the roof panels on opposite sides of the ridge to transmit tension forces, and connects the outer skin portions of the roof panels for transmitting compression forces. Inclined inner eave attachment plates or panels rigidly connect the skin portions of the roof and wall panels, and the inter-fitting web portions of the roof and wall panels are connected to form a building structure which has substantial total strength and may be easily and quickly erected without the use of a crane. Each of the panels in the wall assembly and roof assembly is prepunched and may be formed from a single metal sheet which has a single major corrugation or from a sheet having a Z-shaped lateral configuration.

Abstract: A panel of thin sheet metal is roll-formed into a beam having upper and lower first flange portions integrally connected by a web portion, and the first flange portions are reinforced by corresponding second flange portions which may be formed from the panel and folded back onto the corresponding first flange portion. The upper and lower flange portions project in opposite directions from the web portion providing the beam with a Z-shaped cross-sectional configuration to facilitate close nesting of the beams in a stack. A plurality of parallel spaced stiffening ribs are formed in the web portion, and longitudinally extending stiffening ribs are formed in the flange portions. When the ribs in the web portion extend longitudinally of the beam, a series of longitudinally spaced strut members extend transversely between the flange portions across the ribs and are attached to the flange and web portions.

Abstract: A series of rectangular roof panels and rectangular wall panels each include inner and outer corrugated sheet metal skins or skin portions which are rigidly secured by fasteners to opposite sides of formed sheet metal longitudinally extending spacer members rigidly connected by formed sheet metal laterally extending spacer members. A formed sheet metal box-type or fabricated ridge beam and a series of fasteners rigidly connect the inner skin portions and spacer members of the roof panels on opposite sides of the ridge to transmit tension forces, and a compressive wedge and fasteners rigidly connect the outer skin portions, and spacer members of the roof panels for transmitting compression forces.

Abstract: A series of rectangular sheet metal roof and wall panels each includes inner and outer corrugated skin portions which are connected by web members or portions which may also be corrugated. A fabricated sheet metal ridge beam rigidly connects the inner skin portions of the roof panels on opposite sides of the ridge to transmit tension forces, and connects the outer skin portions of the roof panels for transmitting compression forces. Inclined inner eave attachment plates or panels rigidly connect the skin portions of the roof and wall panels, and other eave attachment members rigidly connect the roof panels and wall panels to form a building structure which has substantial total strength and may be easily and quickly erected without the use of a crane. Each of the roof and wall panels is prepunched and may be formed from a single metal sheet which has a single major corrugation or a Z-shaped lateral configuration.

Abstract: A series of rectangular roof panels and rectangular wall panels each include inner and outer corrugated sheet metal skins which are rigidly secured by fasteners to opposite sides of formed sheet metal longitudinally extending spacer members rigidly connected by formed sheet metal laterally extending spacer members. A formed sheet metal box-type ridge beam and a series of fasteners rigidly connect the inner skins and spacer members of the roof panels on opposite sides of the ridge to transmit tension forces, and a compressive wedge and fasteners rigidly connect the outer skins and spacer members of the roof panels for transmitting compression forces.

Abstract: A series of rectangular roof panels and rectangular wall panels each include inner and outer corrugated sheet metal skins which are rigidly secured by fasteners to opposite sides of formed sheet metal longitudinally extending spacer members rigidly connected by formed sheet metal laterally extending spacer members. The inner skins and spacer members of the roof panels are rigidly connected across a ridge portion to transmit tension forces. The outer skins and spacer members of the roof panels form a pitch of less than twelve degrees and are rigidly connected across the ridge portion for transmitting compression forces.

Abstract: A series of rectangular roof panels and rectangular wall panels each include inner and outer corrugated sheet metal skins which are rigidly secured by fasteners to opposite sides of formed sheet metal longitudinally extending spacer members rigidly connected by formed sheet metal laterally extending spacer members. A formed sheet metal box-type ridge beam and a series of fasteners rigidly connect the inner skins and spacer members of the roof panels on opposite sides of the ridge to transmit tension forces, and a compressive wedge and fasteners rigidly connect the outer skins and spacer members of the roof panels for transmitting compression forces.