A coupling device suitable for interconnecting two beam ends is provided, wherein the beam with the beam end has an elongate axis, where on a first beam end is arranged first interconnection units having two first parallel flange elements arranged with a mutual first distance x, wherein in each flange is designed a cut-out with a cross-section in the plane of the flange; a second beam end is arranged a second interconnection unit having a second flange, the width of the second flange across the plane of the second flange is smaller than or equal to x, and where largely perpendicular to the plane of the second flange, a connecting element protrudes on each side of the second flange, the cross-section of the connecting element in the plane of the second flange allows insertion of the connecting element into the cut-outs of the first flanges on the first beam end.

The invention relates to a bridge (B) for laser cutting machines. In the latter, a laser cutting head (K) is guided over a workpiece support (W) by means of a guide system. The bridge (B) is configured in the form of a substantially straight and box-like profile (1) which has at least one guide for a cutting carriage carrying the laser cutting head (K). According to the invention, at least two side faces (10, 11) of the profile (1) that are located opposite one another with regard to the vertical plane of symmetry (VSE) of the bridge enclose a non-zero angle (a) of less than 180° that opens in the direction of the machining region, at least over a part of the height of said profile (1).

A truss connection apparatus is used to connect truss sections. A connection segment is mounted on each truss to be connected. Each connection segment has an opening, in alignment with each other to receive a fastener. The fastener is threaded on one end and can receive a nut. The other end of the fastener is a locking end having a radial protrusion. One of the connection segments has a securing means adapted to secure the locking end when the at least one protrusion of the locking end is rotated to a locking position. In the locking position the protrusion mates with the securing means and the fastener is prevented from rotational or axial movement and connection segments are fixed relative to each other as are the truss sections on which the connection sections are mounted.

A truss connection apparatus is used to connect truss sections. A connection segment is mounted on each truss to be connected. Each connection segment has an opening, in alignment with each other to receive a fastener. The fastener is threaded on one end and can receive a nut. The other end of the fastener is a locking end having a radial protrusion. One of the connection segments has a securing means adapted to secure the locking end when the at least one protrusion of the locking end is rotated to a locking position. In the locking position the protrusion mates with the securing means and the fastener is prevented from rotational or axial movement and connection segments are fixed relative to each other as are the truss sections on which the connection sections are mounted.

A truss bracing system for roof trusses is disclosed. The truss bracing system comprises of a lateral brace and a diagonal brace connected through a pivot point. Both the lateral brace and diagonal brace include a first support member and a second support member where the first support member is angled relative to, and preferably perpendicular to, the second support member. The pivot point allows the diagonal brace to rotate relative to the lateral brace. That is, the truss bracing system has a closed configuration with the diagonal brace resting adjacent and parallel to the lateral brace and an extended configuration with the diagonal brace rotated relative to the lateral brace, such that the diagonal brace is angled relative to the lateral brace. Thus, the truss bracing system provides both lateral and diagonal support to the trusses to which it is attached.

A truss bracing system for roof trusses is disclosed. The truss bracing system comprises of a lateral brace and a diagonal brace connected through a pivot point. Both the lateral brace and diagonal brace include a first support member and a second support member where the first support member is angled relative to, and preferably perpendicular to, the second support member. The pivot point allows the diagonal brace to rotate relative to the lateral brace. That is, the truss bracing system has a closed configuration with the diagonal brace resting adjacent and parallel to the lateral brace and an extended configuration with the diagonal brace rotated relative to the lateral brace, such that the diagonal brace is angled relative to the lateral brace. Thus, the truss bracing system provides both lateral and diagonal support to the trusses to which it is attached.

An H-section steel has a predetermined chemical composition in which a thickness of a flange is 100 mm to 150 mm, at a strength evaluation position an area fraction of bainite in a steel structure is 80% or more, yield strength or 0.2% proof strength is 450 MPa or more, tensile strength is 550 MPa or more and 680 MPa or less, at a toughness evaluation position an average austenite grain size in the steel structure is 150 μm or less, and (Mg, Mn)S having a particle size of 0.005 μm to 0.5 μm is included at a density of 1.0×10.sup.5 pieces/mm.sup.2 to 1.0×10.sup.7 pieces/mm.sup.2.

There is provided building structures that are demountable from a first configuration to be reassemblable to the first configuration or another configuration. The building structures include systems and kits for the structure, post anchors, kits for floor structure, method for assembling floor structures, wall and ceiling support systems, electrical junction box supports, and kits for frame assembly.

The present invention is a support structure including elongate hollow cylinder and flat plates secured thereto. A first rigid flat plate is horizontally disposed in overlying relation to each hollow cylinder and a second rigid flat plate is horizontally disposed in underlying relation to each hollow cylinder. Stress-distributing strengthening members are circumferentially positioned about the hollow cylinder and secured to their associated rigid flat plates. A key may extend from a first end of each hollow cylinder and a mating socket may be formed in a second end of each hollow cylinder to facilitate end-to-end interconnection of a plurality of hollow cylinders.

A bed frame system for use particularly in hotels that includes side rails and cross rails that include extruded plastic panels that extend downwardly to the floor to block the space underneath the bed frame. The cross rails are connected to the side rails by corner members with a system that allows the entire bed frame to be assembled without the use of tools. In one embodiment, the bed frame is a platform style bed frame that is constructed of an upper bed frame section and a lower bed frame section that are interlocked together to raise the height of the bed frame and eliminate the foundation. The bed frame may have a deck made up of a plurality of individual slats that are supported by the side rails to support the mattress.