A ground beam for a modular constructed building has a pair of surfaces for supporting one or more wall panels and a longitudinally extending male projection interspaced between the pair of surfaces. The projection is capable of being at least partially inserted into a wall panel. In a modular constructed building, a plurality of ground beams and wall panels are provided and a securing device is included for securing the wall panels to a respective beam.

The present technology relates to beams having a cross section defining a plurality of channels and assemblies comprising the beams. In embodiments the cross section may define four channels, facing in four directions. The cross section has the advantages of providing structural channels that provide strength, platforms for attaching sliding and fastening components, and conduits for protecting internal components. The interior and exterior surfaces of the channels are configured to permit multiple carriers to slide/roll in linear motion independently in multiple directions, with smooth action and stability due to one or more guiding features to distribute load. These and other embodiments are discussed in greater detail in the detailed description and drawing figures.

A structural member can comprise a first channel member and a second channel member that are disposed with respect to each other so that their respective channels cooperate to define an interior passage. An inner member can be disposed within the interior passage and couple to each of the first channel member and the second channel member. At least one of the inner member's longitudinal ends can be offset from the respective longitudinal ends of the first channel member and the second channel member.

An elongate roll-formed structural member comprising a pair of generally C-shaped channel elements nested together, the pair of generally C-shaped channel elements forming a body having a substantially rectangular cross-section profile. The body comprising first and second flanges and first and second web portions separating the first and second flanges. The first and second web portions at one or both of the top and/or bottom of the body narrow towards each other and defines a recessed region, adapted for optionally receiving forcing members.

A tubular beam with mechanically fastened end plates preferably includes a tubular member and at least one end plate. At least one cross plate may be secured within the tubular member with fasteners to strengthen thereof. The tubular member may have any suitable cross section including, square, rectangular, hexagonal, triangular or the like. A plurality of hand access openings, a plurality of beam fastening holes and a plurality of fastener holes are formed through a side wall of the tubular member. The end plate is attached to an end of the tubular beam with a plurality of fasteners. A fastener gusset may be formed in inside corners of the tubular member to accommodate a blind fastener hole for attaching the at least one end plate. Each end plate preferably includes a hand access opening, a plurality of plate fastening holes, and a plurality of blind fastener holes and/or fastener holes.

The present invention provides an improved cross arm structure which supports various elements such as pin insulators and keeps the supported elements from crushing the arm when connectors and pins are tightened. According to a preferred embodiment, the present invention includes a cross arm with an inserted geometric structure which extends between the outer walls of the cross arm 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 connector for a structural column includes a male element of a first column segment. The male element includes a male outer surface and a plurality of first fastener apertures. The connector also includes a female element of a second column segment. The female element includes a female inner surface and a plurality of second fastener apertures. At least one of the female element and the male element is swaged such that the female inner surface of the female element is sized to receive the male outer surface of the male element such that each of the first fastener apertures aligns with a corresponding one of the second fastener apertures. The connector further includes a plurality of fasteners configured to be received in the aligned pairs of first and second fastener apertures

A support arrangement is provided for mounting in a wall or roof for supporting at least one extendable covering, the covering being arranged for movement between a retracted state and an extended state for at least partly covering an opening in the wall or roof. The support arrangement includes at least one elongated support member adapted to be attached to a wall portion or roof portion defining the opening and a closing structure for at least substantially concealing the elongated support member.

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.