Allround Scaffolding: Innovative Concept for Bridge Construction & Repair

Mithilesh KumarMithilesh Kumar, Director, Layher Scaffolding Systems
For more than 70 years, the Layher name has been synonymous with high-quality and practically tested scaffolding systems. The Layher brand is present worldwide with more than 30 sales subsidiaries. Layher products are used for building and construction in all kinds of industries including chemical plants and power plants, and at shipyards and offshore. With its innovative products, superior technical solutions, and customer-oriented service packages, Layher has become the standard in scaffolding systems worldwide.

Quick to assemble, safe and flexible

As the name suggests, Allround Scaffolding from Layher enables efficient assembly and dismantling, gives superior performance, and the highest level of flexibility, all of which attributes make it suitable for practically every application.

At civil engineering sites, construction companies have to build a range of structures, in addition to handling the actual building work - from classic work scaffolding to reinforcing and shoring structures and accesses such as stairs and bridging. In many cases, steel or timber structures built specifically for the project are used for these purposes – their drawbacks being cost-intensive production and limited applicability. On the other hand, Layher’s Allround Scaffolding offers a holistic approach for such extensive applications with considerably more cost-effectiveness.

Innovative Concept for Bridge Construction

Lahyer Allround Scaffolding is lightweight and comprises the four basic components viz. standards, ledgers, diagonal braces, and system decks. Fast, material-saving assembly is assured by the components which are low in weight yet have high loading capacity. This is because they use steel of higher strength and have a self-locking wedge head connection using the proven Allround Connector with its structural advantages, and up to eight connection options in one plane, automatic rectangularity of the system, and the predetermined system dimension.

Time-consuming measurements can be dispensed with. The free selection of the angles for the connections and the different standard lengths ensure flexible adaptation to building geometries, ground plans, and topographical peculiarities – using standard components. For further applications, the Layher construction kit also includes matching supplementary components – structurally and dimensionally integrated into the system. In conjunction with a stairway stringer, the four basic Allround components are quickly transformed into a site stair-tower. Combination Allround Shoring Frames TG 60 with Allround Scaffolding allow shoring towers with a loading capacity of up to six tons per standard, to be built.

System solution versus steelwork-based one-off structures

Fast and economical assembly is just one of the advantages that system scaffolding has over steelwork-based one-off structures, or other scaffolding systems. Also important is the rapid availability of the standard components, rapid costing on the basis of the existing listed prices, simple structural strength verification based on building authority approval, flexible adjustment even in complex building geometries, and above all, versatile opportunities for use from facade, suspended and birdcage scaffolding to shoring, reinforcing scaffolding, stairs and bridging, plus site protection of roofs and enclosures.

Shoring Towers TG 60

Integration of Allround Shoring Towers TG 60 enables economical solutions

Layher Allround shoring TG 60 (the false work frame offers even more possibilities in 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 and a structurally rigid one. The face of the wedge head is now precisely positioned against the standard.

Shoring was built to provide temporary support for the formwork during construction of a motorway bridge. Using Layher Allround Scaffolding ensured an economical solution. Since there are load concentrations in the area of bridge walkways, shoring towers were simply integrated into the Allround Scaffolding using the high-strength Allround Shoring Frames TG 60. This allowed the heavy loads to be safely transmitted. The bolt-free and self-locking wedge head connection Auto-Lock, automatic rectangularity, plus the Allround System lengths also allowed rapid assembly – with no need for tiresome measuring work.

The safe assembly sequence for Allround Shoring TG 60 automatically provides scaffolding erectors with all-round side protection, even without additional components, during upright assembly. This allows the valid safety regulations to be met in full for the first time. The use of the new Allround Shoring TG 60 thus ensures crucial advantages for scaffolding companies that include compliance with the tight schedules required by project planning, optimum working conditions for the formwork, and a high degree of safety during assembly work.

NBM&CW July 2019

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