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Mithilesh Kumar |
Layher produces high-quality scaffolding systems in Germany. The company has worldwide presence with more than 40 sales subsidiaries. The products are being used by industries like construction, chemical plants, power plants, as well as at shipyards, offshore, events sector, theatres and arenas. Nowadays for demanding and complex scaffolding applications, i.e., wherever conventional scaffolding technology falls short of optimal and cost effective use, Layher Allround Scaffolding convincingly comes in with an unmatched range of advantages: unbeatably fast assembly, persuasive economic arguments and an extensive range of series-produced accessories.
More Possibilities – Layher Products And Services
Layher’s present product characteristics and services help customers achieve long-term success and increase the profitability of their companies. The Layher Allround Scaffolding has been established as a synonym for modular scaffolds on the market.
Allround scaffolding uses a simple, unique and bolt free connection technology. Sliding the wedge head over the rosette and inserting the wedge into the opening immediately secures the component. There is still sufficient play to secure the other end of the ledger. A hammer blow to the wedge transforms the loose connection into a superbly strong structurally rigid one. The face of the wedge head is now precisely positioned against the standard. Connections in quick to assemble and spanner less scaffolding systems make a unique combination: providing structural strength immediately on assembly and subsequent ultimate force transmission, while offering a choice of automatically right-angled or splayed connections with universal safety right from the start.
To transfer pulling force, every frame is secured by locking pins or bolts to each other. In this way, the tower can be assembled on the ground and then placed by crane.
Application Of Layher Allround Scaffold For Maintenance Of Column
The multiple structured column with different sizes operated by Refinery, is currently being refurbished, and corrosion prevention experts have to treat the entire structure time to time. Safe access to all locations of main building is assured with the use of a modular scaffolding system. The use of Allround Scaffold gives rise to the possibility of complete maintenance on time as per requirement.
The advantage lies in the speed with which not only the right angle can be automatically obtained with the system, but also variable angles can be achieved if required. This is done by fitting the ledgers in rosettes each with four holes at right angles, with four further larger holes (usually used for diagonal braces) being used to facilitate variable angles. This means that the erectors can also make connections at any angle as dictated by the conditions on site. The Scaffolder can easily, thanks to the eight possible connections in every connector, make adaptions quickly and optimally for almost any application.
These advantages ensure the optimum conditions for effectively enclosing the circular and rectangular structure with safe and minimal time required to construct the scaffolding. Allround Scaffolding was easily adapted to follow the contour shape of the structure without difficult to access. The erectors didn’t need to create complex tube structures, saw off tubes all the time, repeat measuring of connections or constantly align the upright elements. The wedge head provides an all in one simple yet stable connection, coupled with a logical assembly sequence and integral safety. Hot-dip galvanisation and certified quality assure that Allround scaffolding top-quality products are extremely long-lived.
Layher Allround Scaffold used for maintenance of two large distillation columns standing 55 m and 37 m height. Approximately 80 tons of scaffolding material was used for this project. The Layher Allround Lightweight modular scaffold technology was the system chosen due to its fitting accuracy and speed of erection to gain access. The major challenge for this project was to erect Scaffolding during operation mode of Column the plant was live (working). The design needed to be free standing to withstand significant wind loads.
Several work levels were required plus a lift going up 40 m were required to be integrated into the scaffolding. The challenge set by this particular job was to follow as precisely as possible the double-curved surface of the tank. This was possible due to the extensive capability of parts Layher are able to offer.
The Layher Aluminium platform stairs were also an excellent addition for allowing the maintenance team to safely move up and down the columns. Thanks to Bruce Sinton, Project Lead, Fitzroy Engineering for the use of these photos.
Conventional anchoring to the column was not possible. The scaffold erectors were only able to make connections to the all-round steel profile – the runner rail for the inspection ladders – at the tank’s “equator” using scaffold couplers. Above and below this anchoring level, the scaffolding was secured by all-round steel cables. A Layher landing-type stairway tower allowed convenient access to the scaffold at various levels.
The top lift of the scaffold at the top of the structure called for Layher’s expertise. Following the increasingly safe scaffolding with proper access at all locations, Layher’s Technical Bureau designed a series of connected lattice girders to the topmost Allround standards, which made them converge in tension-resistant form. The scaffolders then placed the structure on the highest point of the Building using Allround standards.
Application of lattice girder was considered in design to construct cantilever projection on top to fulfil proper access. Construction of scaffolding to make approach for all required location was a major challenge during the shutdown, but it becomes easy when Allround Scaffolding Systems are considered.
Layher new Lightweight scaffolding is result of a major, multi-year R&D project with a clearly defined objective: to make scaffolding easier, safe and above all more cost effective for customer.
For further information,
visit: www.layher.co.in