SFB: Asymmetric slim floor beams

By optimising usable spaces, asymmetric beams incorporated into the floor provide significant height gains and allow one or more additional floors to be built. This system also allows air ducts and services to be easily routed while complying with fire regulations.

Designed to be incorporated into the ceiling, this reliable and economic combination of prefabricated components opens up a whole range of new design opportunities for the architect and remains very competitive for spans of approximately 8 to 10 metres.

These prefabricated elements:

• reduce design costs
• reduce assembly times
• reduce structural weight

This solution is primarily used in multi-storey office buildings and car parks.

Technical information

A plate is welded under the bottom flange of a hot rolled section. The SFB manufacturing costs are lower than for an IFB, but the height heff is the height of the chosen hot rolled section and cannot be adjusted. This solution is perfectly suited for small scale standard projects where materials are immediately available.