Allround scaffolding was easily adapted to follow the contour shape of the structure without being difficult to access.

Layher is the name of a German scaffolding company that produces high-quality scaffolding systems in Germany. Layher has a worldwide presence with more than 45 sales subsidiaries. The products are being used by industries like construction, chemical plants, power plants, at shipyards and offshore. Nowadays, for demanding and complex scaffolding a p p l i c a t i o n s — i . e . , wherever conventional scaffolding technology falls short of optimal, thus 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. Layher Allround Scaffolding has been established as a synonym for modular scaffolds on the market. Allround scaffolding offers unsurpassed versatility and can be used in construction sites, the chemical industry, power plants, aircraft, shipyards, the event sector, theatres, and arenas.

Allround scaffolding uses a simple, unique, 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 placed by crane.

Application of Layher Allround Scaffold for maintenance of the refinery

A distillation column is a critical piece of equipment in the refining of crude oil. It acts very much like a still, separating the product into its different chemical components based on differences in volatility. Oil refineries use two main types of distillation columns:

The multiple structures of different sizes operated by the refinery are currently being refurbished, and corrosion prevention experts have to treat the entire structure from time to time. Safe access to all locations of the main building is assured with the use of a modular scaffolding system. By using Allround Scaffold, it is the only possibility to 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 dictated by the conditions on site. The Scaffolder can easily, thanks to the eight possible connections in every connector, make adaptations quickly and optimally for almost any application.

These advantages ensure the optimum conditions for effectively enclosing the circular and rectangular structures with the safest and minimal time required to construct the scaffolding. Allround scaffolding was easily adapted to follow the contour shape of the structure without being 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 assurance. Allround scaffolding’s topquality products are extremely long-lived. Several work levels were required, plus a lift going up 40 metres was required to be integrated into the scaffolding. The challenge set by this particular job was to follow the doublecurved surface of the tank as precisely as possible. This was possible due to the extensive capability of parts Layher was able to offer.

Conventional anchorage to the tank 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 all-around 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

The use of a lattice girder was considered in the design to create a cantilever projection on top to allow for proper access.Construction of scaffolding to make an approach for all required locations was a major challenge during the shutdown, but it is easy when you consider Allround Scaffolding Systems.

Layher’s new lightweight scaffolding is the result of a major, multi-year R&D project with a clearly defined objective: to make scaffolding easier, safer, and, above all, more cost effective for customers. 

Expertise shared by: Mithilesh Kumar, Director, Layher Scaffolding Systems Pvt Ltd