The WQ beam is intended to speed up the construction of multi-storey buildings. The WQ beam system can be used in any multi-storey buildings, such as offices, hospitals, hotels, and in residential construction.
Similar to WQ beam, the CWQ composite beam is intended to speed up the construction of multi-storey buildings. The CWQ beam consists of a traditional WQ box beam, and dowels. They form the composite beam structure together with hollow-core slabs and screed. The CWQ composite beam system can be used in any multi-storey buildings, such as offices, hospitals, hotels and in residential construction.
Welded girders can be designed and optimised for different purposes. Welded girders and beams are designed and optimised per project in order to achieve the best possible solution. Welded girders are most commonly fabricated into I-girders (IG) and box girders (BG). Our automated welding lines and advanced production methods ensure fast, high quality and reliable deliveries. We fabricate and complete each girder ready for installation as required by the client. We take care of the transport of the girders to the construction site and promise to deliver the product in the right place at the right time.
Our composite column consists of a hollow steel section with a rebar cage placed inside. The column is filled with concrete on-site. The combination of steel and concrete provides superior load-bearing capabilities in normal and fire situations. On-site assembly is fast, and the surface of the column is smooth and ready for final coating.
Composite columns are designed according to EN-1994-1-1 or local regulations.
Our wide range of trusses are suitable for a variety of uses, the main use being a roof support. The size and shape of a truss vary according to geometrical and loading requirements. Trusses are usually constructed of hollow sections, but other profiles can be utilised if needed. Trusses can be installed on any type of column.
Often the most cost-efficient structural solution is to use I- beam girder as main bearing structure, particularly if the span is less than 100m.
For longer spans, beams of varying height can be used. I- beam girders are fabricated on automated welding lines.
Ruukki Easy Bridge® is also available as an I beam girder solution.
Box Girder Bridge
Box girders may be rectangular or trapezoidal in cross section, and typically a concrete deck slab is built over them. Steel decks may also be used.
The stiffeners are placed inside the box, giving the design a clean-lined appearance.
The structure also offers greater torsional stiffness and bending strength.
Large, long-span bridges are typically built as cable-stayed bridges, in which the bridge deck is supported by cables and pylons.
This solution enables a long span and light appearance. Typically a cable-stayed bridge has a composite beam structure based on I girders and the long spans in the centre are supported with cables. Nordec’s cable-stayed bridges in Finland include the Raippaluoto, Tähtiniemi and Crusell bridges as examples.