Disclosed is an arrangement including a staircase as well as walkway systems. The staircase includes a transitional member, and the walkways incorporate grate supports in order to facilitate the connection to adjacent structures. The arrangement also utilizes angled members which are configured with a reinforced flange existing in a dimension that has higher load requirements than the other flange. A novel step configuration is also disclosed.

A post connection adapter for detachably fastening a scaffolding post to a support includes a fastening body having first and second fastening-body fasteners in first and second fastening-body fastening positions, respectively, and detachably fastenable to the support selectively by the first or second fastener. The first and second positions have a fastening position distance between each other of 72 mm. The post connection adapter includes a post connection body extending toward the post connection body axis and fastened to the fastening body. An imaginary center plane containing an imaginary center point between the first and second positions is offset by 20 mm perpendicular to the center plane and to the post connection body axis, with respect to a post connection body axis plane extending parallel to the center plane and containing the post connection body axis. A device has two identical post connection adapters detachably fastened to a support.

A configuration, all components of which are man portable in some embodiments, for holding panels to protect assets against external force and impacts from airborne projectiles. An open box-like stackable frame module holds panels along a side of the frame. Multiple frames are connected to construct a protective barrier, such as a wall. Frames include provisions for connection in a vertical configuration so as to allow stacking of the frames to increase the height of the barrier. A method of installing is also provided.

An erected platform which contains parallel lines of trusses connected end-to-end and method of erecting thereof, as illustrated in FIGS. 20 to 23. Each truss has two sides for chords respectively, with apertures or eyelets at the ends. First and second other trusses for a pair of parallel lines respectively are connected by positioning a first other truss adjacent the decking laid on an existing platform portion. Apertures on first respective sides of the first other truss and one of the existing trusses are connected by a first pin and the first other truss swung into an end-to-end position with the one existing truss and a second pin inserted in apertures on second respective sides of the first other truss and the one existing truss. The first pin is removed and the first other truss swung out of the way so that the second other truss may be attached. The second other truss is positioned adjacent the existing decking and similarly connected end-to-end with the other existing truss. The first other truss is then swung back into position for end-to-end attachment to the one existing truss and the second pin re-inserted.

A foldable quad-chord truss which can be connected end-to-end with like trusses. The chords of each pair of chords are rigidly attached, and connector members intermediate the ends are each swivelly attached to each of the chords of each chord pair to effect the folding into a compact shape for transport and storage. The connector members are adapted for attachment to beams or connector members thereof which beams may extend between a parallel pair of the trusses.

A lightweight multifunctional supporting device and a method for calculating a jacking force thereof. The lightweight multifunctional supporting device includes a supporting frame and a jacking device, the jacking device includes a screw rod and a jacking seat, the screw rod (21) is provided vertically and is fixed on the supporting frame, the jacking seat is provided thereon with a vertical threaded hole and is provided with a lateral rotation rod, and the screw rod is in threaded connection with the threaded hole. The method for calculating the jacking force of the supporting device above.

The invention relates to a scaffolding crossbar (22a, 22b) having at least two, in particular at least three crossbar coupling elements at one end. The crossbar coupling elements can be designed to be the same. The crossbar coupling elements are designed preferably in the form of receiving openings. The crossbar coupling elements serve to detachably secure diagonal piece coupling elements. The scaffolding (10) according to the invention, having a scaffolding crossbar (22a, 22b) of this type, has a diagonal scaffolding piece (16a, 16b) with a first diagonal piece coupling element at one end and a second diagonal piece coupling element at the other end. The first diagonal piece coupling element can be designed differently from the second diagonal piece coupling element, wherein the crossbar coupling elements are designed preferably for connecting both diagonal piece coupling elements. The scaffolding (10) can thereby be designed such that it is optionally partially or completely particularly torsion resistant.

The invention relates to a scaffolding crossbar (22a, 22b) having at least two, in particular at least three crossbar coupling elements at one end. The crossbar coupling elements can be designed to be the same. The crossbar coupling elements are designed preferably in the form of receiving openings. The crossbar coupling elements serve to detachably secure diagonal piece coupling elements. The scaffolding (10) according to the invention, having a scaffolding crossbar (22a, 22b) of this type, has a diagonal scaffolding piece (16a, 16b) with a first diagonal piece coupling element at one end and a second diagonal piece coupling element at the other end. The first diagonal piece coupling element can be designed differently from the second diagonal piece coupling element, wherein the crossbar coupling elements are designed preferably for connecting both diagonal piece coupling elements. The scaffolding (10) can thereby be designed such that it is optionally partially or completely particularly torsion resistant.

The invention includes an access structure integration assembly and an integrated system using the assembly. An access structure integrated assembly includes at least one channeled structure and at least one joist socket slidingly engaged with the channeled structure. The channeled structure is configured to secure to a base structure, such as a suspended work platform system, and the joist socket is configured to secure to a second structure, such as a supported work platform system. An integrated system includes a base structure, a second structure and at least two integration assemblies, each assembly including a channeled structure secured to the base structure and a joist socket secured to the second structure and slidingly engaged with the channeled structure.

The invention includes an access structure integration assembly and an integrated system using the assembly. An access structure integrated assembly includes at least one channeled structure and at least one joist socket slidingly engaged with the channeled structure. The channeled structure is configured to secure to a base structure, such as a suspended work platform system, and the joist socket is configured to secure to a second structure, such as a supported work platform system. An integrated system includes a base structure, a second structure and at least two integration assemblies, each assembly including a channeled structure secured to the base structure and a joist socket secured to the second structure and slidingly engaged with the channeled structure.