Basic structural fire resistant design of members Loadings E- effect of actions G= permanent action 0- variable action Ra三 load-bearing resistance 1n= standard fire resistance time of a member In.requ standard fire resistance time nominal requirement 0= temperature 0.m= Critical temperature of a member y= partial safety factor load combination factorBasic structural fire resistant design of members Loadings E = effect of actions G = permanent action Q = variable action Rfi = load-bearing resistance fi t = standard fire resistance time of a member fi requ . t = standard fire resistance time nominal requirement  temperature cr = Critical  = partial safety factor  load combination factor