Fire protection of structural steel work: Fid-Bau Portal

Fire protection of structural steel work

Kruppa, J. / Twilt, L. / Wesche, J. / Cooke, G.

In the scope of the ECSC-project on 'Increase of the Fire Stability of Steel Structures with Protective Means' various studies have been performed to review, evaluate and, where appropriate, to further develop testing & assessment methods for fire protection of structural steel. This report contains 24 technical notes in which these studies are summarised. The following main areas are distinguished: background information, derivation of design information, and use of design information. The fire resistance rating of structural steel sections can be increased in several ways by applying fire insulation systems. It is possible to use suspended ceilings, vertical screens as well as protection applied to steel members. Experimental and numerical studies have been performed to assess the influence of various parameters such as the shape of the steel sections, the possible clearance between boards and steel, and the use of intumescent paints on the heating of steel. Simple rules are given to take into account these influences. Information is also provided on the use of future European standards to evaluate the effectiveness of fire protection systems and to make assessments of test results to provide the necessary data to be used when considering Eurocodes for structural fire design. Additionally, some aspects are covered when dealing, for example, with the application of box protections or a calculation procedure for stickability.