Abstract: A guardrail formed of folded sheet metal includes a face panel, a top panel extending rearwardly from the top edge of the face panel, a return panel extending downwardly from a return edge of the face panel, the return edge being opposite the top edge, and an end panel extending rearwardly from a side edge of the face panel and having the same width as the distance as the distance between the front surface of the face and the back surface of the return panel, the end panel having an upwardly extending upper portion being narrower than the main body of the end panel so that it is freely received in a downwardly facing channel formed by the face, top and return panels.

Abstract: A wall section formed from sheet metal has a main panel, opposing vertical side flanges extending rearwardly from the side edges of the main panel, top and bottom horizontal flanges extending rearwardly from the panel, and stiffening flanges extending perpendicularly from the rear edges of the side, top and bottom flanges, thereby forming load bearing side beams, a header and a sill plate, the side flanges for attachment to the those of abutting wall sections to form a wall.

Abstract: A truss includes a plurality of truss members, each truss member formed from a unitary folded blank of sheet metal to create a main panel, and proximal and distal flanges and a horizontal panel each extending perpendicularly from the main panel, the proximal flange of a first truss member is connected to the distal flange of a second truss member to form a truss. In one embodiment employing trusses formed of folded sheet metal, a plurality of interconnected truss modules, each truss module including a plurality of truss members, forms a plurality of oppositely extending horizontal flanges that collectively present the top and bottom surfaces of a cantilevered canopy.