This paper performed to predict a variation of temperature of steel columns with spray-applied fire resistive material during fire events. A variation of temperature of steel columns was regulated by FEM analyses accodingly exposed time of fire ( 1hour, 2hour, 3hour). The variation of temperature was researched by reduction of thickness and removal size. Accoding to this study, The steel temperature increase as the removal size and reduction of thickness increase. Also, Evens small remnants of resistive material of fire led to an effective reduction of temperature at any given fire duration as compared to comlpately removal steel column.