Developed and offered by the ArcelorMittal group, the “Slim Floor” system is a fast, innovative and economical solution which marries cellular concrete slabs with built-in steel beams.

The secret of the design is a special kind of girder with a lower flange which is wider than the upper flange. This arrangement makes it possible to fit the floor slabs directly onto the lower flange plate of the beam, so that the two constituents thus make up the floor.

Created to eliminate beam downstands at the level of the floor slabs, this reliable and economic prefabricated component unit gives the architect new scope for imagination and guaranteed economy for working spans of up to 8 metres.
The reduced height of the slabs and the advantage of a considerable degree of fire resistance make for maximum freedom in creativity.

A good alternative to the concrete slab would be the use of a floor on a Cofradal® 200 steel tray.

Slim Floor Brochure is available in our library

CoSFB – Composite Slim-Floor Beam

The CoSFB (= Composite Slim-Floor Beam), a new development from ArcelorMittal, combines the advantages of composite design with traditional slim-floor construction. The connection between in-situ concrete and the hot rolled steel section is assured by concrete dowels. These dowels are openings in the web of the steel section, penetrated by reinforced concrete. Thanks to this innovative shear connection the composite action is assured without an increase of the construction height! Due to the composite action the stiffness and robustness of the structure is significantly be increased. In addition CoSFB fulfills the requirements for fire resistance classes R60 and R90 (R120) without any passive fire protection. CoSFB is an economic solution for sustainable construction.

Typical application range of CoSFB is beam span from 8m up to 14m, with a construction height of only 40cm and a beam distance up to 10m. CoSFB fits perfectly to the demands of modern architecture to long spans.