Layher offers the optimal solution for the construction of a more than 100-meter-long pedestrian crossing with free spanned bridge elements of 31 metres.

For more than 70 years, the Layher name has been synonymous worldwide with high-quality and practically tested scaffolding systems. Layher is present worldwide, with more than 50 sales subsidiaries. The products are used for building and construction in all kinds of industries, like chemical plants or power plants, shipyards, and offshore. Due to innovative products, superior technical solutions, and Layher’s absolute customer-oriented service package, Layher has become the standard in scaffolding systems worldwide.

Allround bridging systems are ideal complements to Layher Allround equipment. With just a few additional components, the load-bearing capacity of the proven Allround systems can be increased enough to create, for example, wide-span footbridges or support structures for heavy loads.

The Allround Bridging System is a modular truss system that can be adapted to the respective application. The posts of the Allround Bridging Systems have wedge heads welded to the sides, to which standards of the Allround equipment can be fastened. As a result, the Allround Bridging Systems can be combined with Allround equipment, offering a wide range of possible uses. A complete integration into an Allround Scaffolding structure (e.g., to transfer high loads or bridge wide spans) is also possible. The individual components of the Layher Allround Bridging System are connected in a time-saving way using bolts of diameter 30 mm. The connection to the Allround equipment is made using the proven Allround wedge head connection.

A standard Layher bridge structure mainly comprises two load-transferring Allround Bridging Systems that are arranged parallel to one another at a defined distance, depending on the required bridge width. A stable bridge supporting structure is obtained with an internal Allround scaffolding structure fastened between the two Allround Bridging Systems, The stiffening in the transverse direction and hence the stabilisation of the Allround Bridging Systems is achieved with horizontally arranged bracing in the Allround structure. The bridge decking and the guard rails are fastened to the internal Allround scaffolding structure. The entire bridge structure—both bridging units in combination with internal Allround Scaffolding – is finally supported at the bridge ends. The support can for example be on individual Layher heavy-duty supports integrated into a separate stairway access. In some cases, it is also possible to support the end posts of the bridge directly on existing foundations, beams, or walls.

With the new development “Allround Bridging System,” Layher offers the optimal solution for the construction of a more than 100-meter-long pedestrian crossing with free spanned bridge elements of 31 metres.

Application of Allround Bridging Systems

When a footbridge is built, the Allround bridging systems is connected to Allround standards using the wedge-heads provided on the sides of the posts. Depending on the application, either event decks or steel decks can be used.

As a replacement for the closed bridge, the city ordered the construction of a temporary pedestrian crossing that would cross the road and railway parallel to the existing bridge. Tasks of this nature generally require project-oriented and therefore expensive special construction. With the innovation from Layher, scaffolders can now offer this service much more efficiently with only a few additional components to the Allround system. After a successful appearance in Davos at the World Economic Forum, the use of the Allround bridging system for this project with supporting spans of up to 31 metres was also the optimal solution.

In order to derange traffic on this highly frequented route as little as possible, the construction was pre-assembled on the ground. To bridge the road and river, provisions were made for two sections of 31 metres each. To compensate for deflexion, these were constructed thanks to the lengthwise adjustable diagonal brace with a slight cant. Within only five minutes, the builders in charge were now able to place the two parts of the bridge onto the supports by means of a crane: during the afternoon over the river and at night, during a short complete closure, over the motorway. One day, one night, and the bridge is completed for a duration of approximately four to six months. Accesses as well as the middle section were, thanks to full compatibility, constructed with the Allround scaffolding.

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