A modular space frame support system comprises an upper frame comprising a plurality of joists interconnected with a plurality of interconnection structures; a lower frame comprising a plurality of joists or chords interconnected with a plurality of interconnection structures; at least two interconnection structure brackets, wherein a first of the at least two interconnection structure brackets is connected to one of the plurality of interconnection structures of the upper frame and a second of the at least two interconnection structure brackets is connected to one of the plurality of interconnection structures of the lower frame, each interconnection structure bracket comprising a hollow tubular section, and at least one chord-engaging structure; and at least one chord secured at a first end to the first of the at least two interconnection structure brackets and at a second end to the second of the at least two interconnection structure brackets.

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.

An assembly of a platform assembly and a support structure, the platform assembly comprising a flexible platform, a plurality of support straps arranged to support the platform, a plurality of clamps supported by the support structure, the plurality of clamps provided along a side of the platform and clamping a side section of the platform, and a plurality of tensioning devices attached to the support straps at attachment locations and arranged to tension the support straps, wherein the attachment locations of the tensioning devices are positionable independently of the position of the clamps, and a method of assembly. A clamp having first and second clamping members having clamping surfaces, an actuation assembly comprising an actuation member coupled to at least one clamping member such that rotation of the actuation member, about a rotational axis, in a first rotational direction rotates the first and second clamping members relative to each other, wherein for a certain rotational position of the actuation member, the actuation member is moveable in a first axial direction relative to at least one clamping member and is coupled to the at least one clamping member such that said relative movement acts to urge the clamping surfaces closer together.

A platform and a kit therefor. The platform and the kit comprises quad-chord trusses attachable end-to-end and having connector members intermediate thereof, and further comprising beams attachable at their ends to the connector members so that a beam attaches two parallel trusses. A truss comprises first and second pairs of chords which are foldable for storage and transport and unfoldable to use for erection of the platform. A track lies between the upper chords to allow movement of bolts along the track into position to attach for insertion into decking apertures for attachment of the decking. The kit also includes a sturdy and reliable and easy to use tie-up mechanism and railing along the platform perimeter which is quickly and easily attachable and reliable.

A platform and a kit therefor. The platform and the kit comprises quad-chord trusses attachable end-to-end and having connector members intermediate thereof, and further comprising beams attachable at their ends to the connector members so that a beam attaches two parallel trusses. A truss comprises first and second pairs of chords which are foldable for storage and transport and unfoldable to use for erection of the platform. A track lies between the upper chords to allow movement of bolts along the track into position to attach for insertion into decking apertures for attachment of the decking. The kit also includes a sturdy and reliable and easy to use tie-up mechanism and railing along the platform perimeter which is quickly and easily attachable and reliable.

A rigging system comprising a plurality of members including: a first hexagonal support piece comprising six side members, a plurality of rod holes, a plurality of side holes, and a plurality of set screw holes, a first rod piece that has a diameter of size configured to fit closely within to the diameter of the rod holes, a first set screw that has a diameter of size configured to fit closely within the diameter of the set screw hole, a first connection bolt that that has a diameter of size configured to fit closely within the diameter of the side hole and the plurality of members having a plurality of configurations providing structural support.

A rigging system comprising a plurality of members including: a first hexagonal support piece comprising six side members, a plurality of rod holes, a plurality of side holes, and a plurality of set screw holes, a first rod piece that has a diameter of size configured to fit closely within to the diameter of the rod holes, a first set screw that has a diameter of size configured to fit closely within the diameter of the set screw hole, a first connection bolt that that has a diameter of size configured to fit closely within the diameter of the side hole and the plurality of members having a plurality of configurations providing structural support.

A tubular beam extension includes three sizes. A first tubular beam extension includes a center tube and four corner retention projections. A single corner retention projection extends outward from each corner of the center tube. Each corner retention projection includes an extension member and a retention member. A retention cavity is formed in the retention member. A second tubular beam extension includes a rectangular tube, the four corner retention projections and four side retention projections. Each side retention projection includes a first extension member, a second extension member and a flange member. A single flange member is located between two adjacent corner retention projections. A third tubular beam extension preferably includes a rectangular tube, the four corner retention projections, two end retention projections and at least four side retention projections.

A tubular beam extension includes three sizes. A first tubular beam extension includes a center tube and four corner retention projections. A single corner retention projection extends outward from each corner of the center tube. Each corner retention projection includes an extension member and a retention member. A retention cavity is formed in the retention member. A second tubular beam extension includes a rectangular tube, the four corner retention projections and four side retention projections. Each side retention projection includes a first extension member, a second extension member and a flange member. A single flange member is located between two adjacent corner retention projections. A third tubular beam extension preferably includes a rectangular tube, the four corner retention projections, two end retention projections and at least four side retention projections.

Disclosed is a founding system for mounting in the interior of a structure having rounded interior walls, such as a coker. The founding system includes one or more generally horizontal support layers. In one example, each horizontal support layer has four support beams and four connection elements mounting the support beams. Each connection element has a flat edge tangential to the rounded interior walls of the structure, a foot extending from the flat edge to abut the interior of said rounded interior walls, and two mounts for mounting two of the support beams at an angle of about 90 degrees.