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.

An end connector for a horizontal scaffold member includes two sidewalls that are substantially parallel joined to a pipe. Each side wall has two spaced apart engagement section. The sidewalls extend into the interior of the pipe and remain substantially parallel in the interior of the pipe. A movable latch is positioned between the two sidewalls.

One embodiment of the invention is a horizontal scaffold truss that has upper and lower horizontal scaffold members offset but fixedly joined with braces. Each upper and lower members have a connector positioned on each end of the respective lower and upper members, where at least one of the connectors is pivotally mounted on the respective lower or upper connector, and the connecters are engageable with an annular member positioned on a vertical scaffold member.

A horizontal supporter for scaffolds is disclosed. The horizontal supporter is configured such that, when a pressing piece is moved upward in order to unlock a locking piece, the pressing piece and the locking piece are caught by each other due to engagement between a catching recess and a latching projection, whereby the pressing piece remains moved upward, wherein, even when the elasticity of an elastic body is reduced due to repetitive use of the horizontal supporter or even when a gap is formed between the related parts due to wear of the related parts, it is possible to prevent the pressing piece from moving downward due to the weight of the pressing piece, whereby it is possible to eliminate trouble in use and to reduce financial loss due to a reduction in the lifespan of the horizontal supporter.

A method for providing and assembling scaffolding units, each of which will be assembled from individual scaffolding components (of a scaffolding system) for constructing an industrial plant, in particular a petroleum refinery, comprising the following steps: Providing a 3D construction plan of the industrial plant; Constructing schedule for the industrial plant in order of occurrence, Selecting and drawing of scaffolding units to be used in the individual sections or phases of construction of the industrial plant in the 3D construction plan; Specifying the erection time required to erect the scaffolding unit; Specifying the dismantling time required to dismantle unit; Dividing the construction schedule into time intervals; Calculating for every single time interval, while taking into consideration the erection and dismantling times of the scaffolding units, the respective number of scaffolding components of identical design which are used simultaneously; Determining the maximum number of scaffolding components of the design which are used simultaneously across all time intervals; Providing the maximum number of scaffolding components of design alone and including a defined number of a buffer of scaffolding components of design; assembly of the scaffolding units to be used in a respective phase of construction from the scaffolding components each required for this purpose on-site at a point in time chosen in dependency of the specified erection time each at the latest prior to a start of construction in the respective section of construction specified in the construction schedule.

A support for supporting a structure region, including a central part which has a hollow profiled rectangular tube and two end parts, wherein each of the end parts is arranged so as to be telescopable out of the central part from open ends of the hollow profiled rectangular tube in order to change the length of the support. Each of the end parts has a hollow profiled round tube, and inner wall regions of the hollow profiled rectangular tube form guides for the hollow profiled round tubes. The hollow profiled round tubes can be guided in the central part in the longitudinal direction of the hollow profiled rectangular tube by means of contact region lying against the guides so as to achieve the telescopability of the end parts.

A framing system and method of mechanically joining tubular elements to form frames without the need for welding technologies or connectors. The frames are two dimensional or, e.g., horizontal or vertical planes, or three-dimensional frames, e.g., cubes or rectangles. These joints between tubes are formed by fastening features cut into the tubes. The fastening features include hooks, slots, wedges and other shapes. The fastening features engage with each other to form joints between tubes that form a frame. The tubes can be metal or plastic or other material, and have cross sectional shapes of square, rectangular, rounded or other.

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.

A truss frame for a bridge and/or support includes two elongated, parallel longitudinally-extending post pipes having an outer circumference; two parallel crossbars extending perpendicularly to the post pipes; and a length-adjustable elongated diagonal element. The parts are hingedly and detachably bolted to one other. Two parallel connecting plates secured near each post pipe end extend away from one another on a common, imaginary plane containing the post pipe and crossbar longitudinal axes. Each crossbar and diagonal element has opposite ends hingedly and detachably bolted to a connecting plate. At least two rosettes are welded to each post pipe at a distance from one another corresponding to an integer multiple of a module scaffold modular size. A connecting body is welded to the connecting plate near at least two post pipe ends associated with the same crossbar and surrounds the respective post pipe outer circumference.

A runback backstructure access system for removably providing access between building floors of a building structure. The system includes: first and second tower legs with first and second rosette attachment connectors; a first landing beam mountable between the first and second tower legs; first and second landing beam support connectors connectable respectively to the rosette attachment connectors; at least one building support connector for connecting the first landing beam to the building structure; third and fourth tower legs with third and fourth rosette attachment connectors; a second landing beam mounted between the third and fourth tower legs; third and fourth landing beam support connectors for connecting to the third and fourth rosette attachment connectors; and at least one strut member for connecting the first landing beam to the second landing beam.