ABSTRACT

The fire spread accompanied by high degree of non-uniform temperatures was observed. Maximum degree of gas heterogeneity was reached about 15 min between thermocouple TG2 and TG4. Whereas the distance between these thermocouples was only 6 m, temperature difference of 400◦C was measured. The highest gas temperature of 979◦C was measured on thermocouple TG3 close to the column B2 at 26 min. The maximal steel beam temperature reached 855◦C.

3 NUMERICAL SIMULATION