Last updated: 3 August 2026
Safe lifting solutions for prefabricated components
Until a few years ago, many timber components were manufactured directly on the construction site. Today, modern timber construction increasingly relies on a high degree of prefabrication to reduce construction times, optimise installation processes and ensure a consistently high standard of workmanship. In particular, large-format elements made of cross-laminated timber (CLT), glued laminated timber (glulam) and timber frame constructions are now commonly prefabricated in the factory and delivered to the construction site ready for installation.
As prefabrication continues to increase, so do the demands on logistics and installation. Timber components, often weighing several tonnes, must be lifted, transported, positioned and installed safely and efficiently. At the same time, installation times need to be reduced and on-site workflows optimised. This is where transport anchor systems play a key role. They form the connection between the timber component and the lifting equipment, ensuring that the forces generated during lifting are safely transferred into the timber component. Combined with suitable fasteners, they provide reliable load transfer and make a significant contribution to safe and efficient installation processes in modern timber construction.
TOC: Requirements for modern transport anchor systems | Operating principle | Powerring and Powerblock transport anchors | Installation options and fastening configurations | Planning considerations | Conclusion
Transport anchor systems are used wherever prefabricated timber components need to be lifted, transported and installed safely. Typical applications range from large-format CLT elements for walls, floors and roofs to glulam beams and columns as well as prefabricated timber frame elements. They support every stage of the process, from loading at the factory and transportation to positioning and installation on site.
As the level of prefabrication in timber construction continues to increase, so do the demands placed on lifting and transport solutions. Complete structural elements are increasingly manufactured with cladding, insulation, windows and other pre-installed components, resulting in larger and heavier elements that need to be handled. As a result, transport anchor systems are now used in a wide range of timber construction projects, including residential, commercial and educational buildings, industrial structures and modular timber construction. They are utilised throughout the entire timber construction value chain by manufacturers of prefabricated timber components, timber frame and modular building companies, as well as timber construction contractors and structural timber engineering specialists.
Different applications place different demands on lifting systems. While large wall and floor elements are typically lifted using multiple lifting points, beams, columns and more compact components often require different fastening and lifting configurations. Transport anchor systems therefore need to be versatile enough to accommodate a wide variety of component geometries, installation sequences and site conditions. In addition to safe handling, economic efficiency also plays an important role. Short set-up times, flexible installation options and reusable components help optimise workflows and improve installation efficiency. Modern transport anchor systems must therefore meet the highest standards in terms of safety, flexibility and efficiency.
The purpose of a transport anchor system is to safely transfer the forces generated during lifting and transport from the lifting equipment into the timber component. Loads are transferred from the crane hook via the sling swivel and the transport anchor to the fasteners before being distributed into the timber section. The safe transfer of loads therefore depends on the interaction of all system components. In addition to the transport anchor itself, the fasteners used, the installation conditions and the properties of the timber component all influence the load-bearing capacity of the overall system. The aim is to achieve the most even and controlled distribution of forces within the timber component. The permissible load capacity is determined by factors including the number, arrangement and embedment depth of the fasteners, as well as edge distances, component geometry and the lifting angle. Depending on the application, different fastening configurations may therefore be required to achieve optimum load distribution and make full use of the available load-bearing capacity.
When designing transport anchor systems, both static and dynamic loads must be taken into account. Unlike static loading conditions, lifting, rotating and positioning timber components generate additional dynamic forces. External influences such as wind loads may also need to be considered. Acceleration, deceleration and changes in the lifting angle have a direct impact on the loads acting on the overall system and must therefore be considered during the design process. Consequently, the transport anchor, fasteners and timber component should always be regarded as an integrated system. Only the correct selection and professional installation of all components can ensure that the required load-bearing capacity is achieved reliably.
The permissible load-bearing capacity of a transport anchor system depends on several technical and structural factors that must be taken into account during planning and installation. These may include, amongst others:
The safe lifting of prefabricated timber components requires transport anchor systems that are tailored to the specific application. Eurotec offers two solutions for this purpose: the Powerring transport anchor and the Powerblock transport anchor. Both systems have been specifically developed for use in cross-laminated timber, glued laminated timber and other prefabricated timber components. Designed for repeated use, they can be installed in a variety of fastening configurations to meet different application requirements.
Powerring transport anchor
The Powerring transport anchor has been developed for installation on the top surface of CLT panels and timber beams. Its circular base plate with a centrally positioned threaded connection for the sling swivel provides a compact and robust solution for handling large-format timber components. Typical applications include CLT wall and floor elements, glulam beams and prefabricated timber building systems.
The system is available in three sizes and offers load capacities of up to 6.3 tonnes per lifting point. Depending on the application, versions with M12, M14 or M24 threaded connections are available. The different sizes allow the system to be adapted to a wide range of component thicknesses and load requirements, from smaller prefabricated elements to heavy timber components. Thanks to the combination of perpendicular and inclined screw arrangements, the Powerring transport anchor is capable of safely transferring both vertical and shear forces.
Powerblock Transport anchor
While the Powerring transport anchor is primarily intended for installation on the top surface of timber components or beams, the elongated base plate of the Powerblock transport anchor also allows installation on the end face of timber components. This makes the system particularly suitable for large CLT wall and floor elements, as well as applications where conventional lifting points are difficult or impossible to use.
The Powerblock is available in sizes M and L and, like the Powerring, is designed for load-bearing capacities of up to 6.3 tonnes per attachment point, depending on the version and application. As with the Powerring, loads are transferred via a compatible sling swivel. The combination of 90° and angled screw connections enables the safe absorption of both vertical loads and shear forces.
Sling swivel
The sling swivel forms the interface between the transport anchor and the crane hook and is therefore an essential part of the load path. The sling swivels used with the Powerring and Powerblock transport anchors are freely rotatable, allowing them to align automatically with the direction of pull. This supports controlled load transfer, reduces twisting during lifting operations and contributes to the safe handling of the timber component. Matching sling swivels with M12, M14 and M24 threaded connections are available for the different anchor sizes.
Both the Powerring transport anchor and the Powerblock transport anchor are based on the same principle of safe load transfer but differ in their design and the resulting range of applications. In combination with the sling swivel, they form an integrated system for lifting, transporting and positioning prefabricated timber components throughout the various stages of the timber construction value chain.
Both transport anchor systems are designed for repeated use. To ensure safe operation, a visual inspection must be carried out before each use, and regular inspections must be performed in accordance with DGUV 109-017. In addition, only approved system components may be used to ensure the required load-bearing capacity and operational safety.
The load-bearing capacity of a lifting point is largely determined by the selected fastening configuration. In addition to the transport anchor itself, the number, arrangement and dimensions of the fasteners play a key role. Different fastening configurations allow the Powerring transport anchor and Powerblock transport anchor to be adapted to a wide range of timber components, load conditions and installation requirements. Depending on the transport anchor size, timber component type and required load capacity, various fastening patterns and matching KonstruX fully threaded screws are available. Depending on the application, it is not always necessary to use all designated screw positions.
The fastening configuration must always be designed specifically for the intended application. The specified requirements regarding screw dimensions, fastening configurations and installation conditions must be observed. As a general rule, the screws used for fastening may only be used once.
Powerring – Screw concepts
Depending on the anchor size, the Powerring transport anchor is installed using KonstruX fully threaded screws with diameters of 6.5 mm (size S), 8.0 mm (size M) or 10.0 mm (size XL). All configurations additionally require a 5.0 × 60 mm angle-bracket screw. The Powerring offers three basic screw configurations to adapt the load-bearing capacity to different component geometries, lifting angles and load-bearing requirements. Depending on the selected configuration, the fully threaded screws are installed perpendicular to the timber surface, at an angle, or in a combination of both insertion directions.
Powerring S,M und XL
4 screws (90°)
To achieve the full load capacity of the transport anchor, a combination of perpendicular and inclined fully threaded screws is used. This arrangement enables both tensile and shear forces to be transferred efficiently into the timber component. For applications with lower load requirements, configurations using only four instead of eight screws are also available. Depending on the application, the screws can be installed either perpendicular to the timber surface or at an angle of 45°. While the perpendicular arrangement is particularly suitable for lifting operations with a vertical lifting direction, the inclined screw arrangement provides better alignment with inclined load directions. The appropriate fastening configuration depends on factors including the thickness of the timber component, the screw length and the lifting angle β. The permissible load capacities are therefore specified separately in the corresponding product data sheet for different CLT thicknesses, screw lengths and lifting angles.
Powerblock – Screw Concepts
The Powerblock transport anchor is used in combination with KonstruX fully threaded screws with a diameter of 10.0 mm and lengths of 155 mm, 220 mm or 300 mm, together with a 5.0 × 60 mm angle-bracket screw. The required screw length depends on the thickness of the timber component and the requirements of the specific application.
Unlike the Powerring transport anchor, the load capacity of the Powerblock transport anchor is not adjusted by varying the installation angle of the fully threaded screws. Instead, it is achieved through fastening patterns with different numbers of screws. Depending on the application, the Powerblock M is available in configurations using two, four or six fully threaded screws. As the number of screws increases, the effective anchorage area within the timber also increases, allowing higher loads to be transferred while distributing the forces more evenly throughout the timber section. The Powerblock L is designed for higher load requirements and therefore uses larger fastening patterns with six, eight or twelve fully threaded screws. This distributes the applied forces over a larger area of the timber section, supporting safe load transfer, particularly when lifting large-format timber components.
Powerblock M
Powerblock L
6 or 12 KonstruX screws
Important note
The fastening configurations mentioned provide an overview of the possible applications of the Powerring and Powerblock transport anchor. Detailed information on approved fastening configurations, load capacity tables, minimum edge and spacing distances, as well as installation and operating instructions, can be found in the respective product data sheets and installation and operating manuals. These documents are available on the corresponding product pages on our website.
Powerring
Powerblock
In addition to the selected fastening configuration, numerous other factors influence the permissible load capacity of a transport anchor system. These include the thickness of the timber component, the properties of the engineered wood product, the installation conditions, the lifting angle and the dynamic loads occurring during lifting operations. The appropriate transport anchor system and fastening configuration should therefore always be selected based on the specific requirements of the project. Only then can safe and reliable load transfer be ensured.
The safe use of transport anchor systems begins during the planning stage. Lifting points should be incorporated into the component and installation planning at an early stage to ensure that the transport, positioning and installation of timber components can be carried out safely and efficiently. In addition to the weight of the component, the conditions of the intended lifting operation must also be considered, as the actual loads acting on the system may be influenced by the installation conditions and transport procedures.
Particular attention should be paid to the position of the component's centre of gravity. The lifting points must be positioned so that the timber component can be lifted in a controlled manner and handled safely throughout the lifting operation. This helps prevent unwanted tilting and uneven load distribution.
It is also advisable to consider the installation sequence during the planning stage. Defining lifting points, storage positions and installation sequences in advance can help avoid unnecessary repositioning operations and reduce installation times.
Before each lifting operation, the timber component, fastening points and all system components should be inspected for damage or other visible defects. While transport anchors and sling swivels are designed for repeated use and are subject to regular inspections, the screws used for fastening are intended for single use only and must be replaced after use.
Careful planning and the correct use of the transport anchor system make a significant contribution to safe and efficient lifting and installation processes in modern timber construction.
Further lifting and transport solutions
The transport anchor systems presented in this article represent just one part of the lifting and transport solutions available for modern timber construction. For a comprehensive overview of the Eurotec product range, including technical details, application examples and design principles, explore our lifting and transport solutions brochure.
Conclusion
As the level of prefabrication in modern timber construction continues to increase, safe and efficient lifting and transport processes are becoming increasingly important. Transport anchor systems enable the controlled lifting, handling and positioning of CLT, glulam and other prefabricated timber components, making an important contribution to safe installation processes on site. This requires careful planning, professional installation and compliance with the applicable technical specifications. Only the coordinated interaction of the transport anchor, sling swivel, fasteners and timber component ensures safe load transfer and reliable structural performance.
With the Powerring transport anchor and Powerblock transport anchor, Eurotec offers practical solutions for a wide range of timber construction applications. Thanks to their versatile installation options, both systems support the safe and efficient handling of prefabricated timber components throughout the construction process.
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