Fire resistance of a structural component is achieved either by means of an appropriate thickness of concrete cover or by protecting the exposed reinforcements with fire-retardant or intumescent materials.
In StercheleGroup® PREM system, both ways can be followed depending on the specific requirements.
- Concrete cover increasing, where possible, simplifies the work on site and maintenance (i.e. PREM beams with prefabricated base and prefabricated columns).
- Exposed steel structures protecting with fire-retardant or intumescent materials decreases, even greatly, the geometric dimensions (i.e. PREM beams with steel bottom plate and steel concrete composite columns).
- When the choice of the structural component is carried out for other reasons than its fire resistence.
MOST SUITABLE COMPONENTS
Slabs and walls: all.
Fire-retardant or intumescent materials:
(Slabs and Walls: all, but it is never convenient if not in retrofit).