Resistance of partially protected steel beams in fire

Intumescent coating is often used as a fire protection on steel members due to its attractive appearance and ease of use. In the case when member fully covered by coating, response during can be predicted rather accurately. However, if only partially, member's temperature profile structural are not trivial define. Partially appear e.g. in cases which coated building site, but some previously installed adjacent structures disturb process. Such partially have been studied literature mainly from point view, present paper, also behavior considered. The paper presents general procedure how define resistance protected fire. As result, time-resistance curves defined for bending, shear torsion standard IPE HEA profiles example simulations results compared unprotected cases. finite element method adopted both thermal analyses. expansion intumescent taken into account using so called effective conductivity, hence same model simulated validated against experimental simulation previous researches. show, that case, partial increases resistances improvement at height 15-30 minutes beginning