An atrium hybrid greenhouse. The greenhouse employs the skeleton structure of columns, girders, and joists of an industrial metal building on which are spaced external and internal walls, and spaced roof and ceiling. The spaced walls form a wall cavity therebetween, and the roof and ceiling form a ceiling cavity therebetween. A radius cave channel is used to connect the wall cavity and the ceiling cavity for fluid flow therebetween. The external and internal wall and roof/ceiling panels are formed of relatively stiff light transmissive material such as polycarbonate. The formed cavity also provides insulation value.

A clearspan structure including component systems, and methods of forming a clearspan structure including component systems, for mitigating hazards to personnel or equipment from explosions, fires, toxic material release, and other hazards in hazardous locations. The exemplary clearspan structure is also capable of withstanding environmental conditions such as snow loads and wind. The exemplary clearspan structure is, for example, a tent or fabric structure which includes a plurality of frame members forming a support system for the clearspan structure, and fabric roof portions and walls for enclosing the clearspan structure.

A clearspan structure including component systems, and methods of forming a clearspan structure including component systems, for mitigating hazards to personnel or equipment from explosions, fires, toxic material release, and other hazards in hazardous locations. The exemplary clearspan structure is also capable of withstanding environmental conditions such as snow loads and wind. The exemplary clearspan structure is, for example, a tent or fabric structure which includes a plurality of frame members forming a support system for the clearspan structure, and fabric roof portions and walls for enclosing the clearspan structure.

A structural member for a building, the structural member comprising: at least two spaced apart sidewalls, each sidewall formed from at least one contoured metal sheet; and at least one connecting vertex through which the sidewalls are connected, each connecting vertex include at least one structural bend formed in at least one of the contoured metal sheets, the sidewalls being connected through the connecting vertex to form a structural span therebetween, wherein each structural bend is formed between a first sheet section and a second sheet section of the respective contoured metal sheet, the first sheet section and second sheet section being connected about a bend line with the first sheet section extending from the bend line at a selected angle relative to the second sheet section, and wherein the first sheet section has a contoured profile that is a symmetrical mirror of the contoured profile to the second sheet section about the bend line.

A moment frame is disclosed for a sloped roof construction. The moment frame includes a lateral bracing system having a high initial stiffness and including yield links capable of effectively dissipating energy generated within the lateral bracing system under lateral loads.

A canopy for selectively covering an area, such as a sports field includes at least two beams which span the area, at least two cross beams which are displaceable along the beams, a cloth which is attached to the cross beams, a drive which is configured to displace the cross beams with the cloth attached thereto along the beams, and a substantially flexible tensioning member fastened between the cross beams.

A clearspan structure including component systems, and methods of forming a clearspan structure including component systems, for mitigating hazards to personnel or equipment from explosions, fires, toxic material release, and other hazards in hazardous locations. The exemplary clearspan structure is also capable of withstanding environmental conditions such as snow loads and wind. The exemplary clearspan structure is, for example, a tent or fabric structure which includes a plurality of frame members forming a support system for the clearspan structure, and fabric roof portions and walls for enclosing the clearspan structure.

Wall systems and buildings having such wall systems are disclosed. Such wall systems include parametric mullions each of which is constructed from a plurality of interconnecting components so that the wall systems may be disposed much closer to the building frame than conventional wall systems. Such wall systems may include panels disposed to form convex or concave facades. Such wall systems may also include decorative features superimposed over one or more panels or extending outward from the facade surface. The parametric mullions may be formed into trusses which may be used as part of a wall system or independently of such wall systems.

A method including placing on a surface a first beam having a first end with a first clevis component opposing a second clevis component. A second beam, including a second end having a third clevis component opposing a fourth clevis component, is placed adjacent the first end on the surface. The first clevis component is connected to the third clevis component. A lifter is connected to the first end and the second end, which are lifted simultaneously from the surface while rotating the first beam and the second beam about the connector until the second clevis component engages the fourth clevis component. Connection between the second clevis component and the fourth clevis component then may be completed.

A method including placing on a surface a first beam having a first end with a first clevis component opposing a second clevis component. A second beam, including a second end having a third clevis component opposing a fourth clevis component, is placed adjacent the first end on the surface. The first clevis component is connected to the third clevis component. A lifter is connected to the first end and the second end, which are lifted simultaneously from the surface while rotating the first beam and the second beam about the connector until the second clevis component engages the fourth clevis component. Connection between the second clevis component and the fourth clevis component then may be completed.