Steel Buildings in Europe

Part 6: Fire Engineering 6 - 18   w w f w 0,5 2 ht b t t b h t A V      (1)   w w f 0,5 ht b t t b h A V     (2) b t t w f h   w w f w 0,5 1,5 ht b t t b h t A V      (3)   w w f 0,5 0,5 ht b t t b h A V     (4) (1) – 4 sides profile protection (2) – 4 sides box protection (3) – 3 sides profile protection (4) – 3 sides box protection Figure 3.6 Protection configuration and section factor The required fire resistance period is determined by the national building regulations in each country. Based on datasheets, such as Table 3.1 for board protection, Table 3.2 for sprayed non-reactive coating and Table 3.3 for intumescent coating, the thickness of protection materials can be easily defined. Datasheets are usually published by manufacturers. In some countries manufacturers’ datasheets have been consolidated into reference documents published by the relevant body and agreed for use by the designers.