Steel check is code dependent. Initial data which are necessary for steel check will be filled by default (they can be changed by user further). The results of Internal forces analysis for code checking are necessary too. steel check procedures are based on analysis results for loads combinations. At least one persistent combination must be defined for Ultimate Limit State check. For Serviceability Limit State check Ch.C.(w1) (the characteristic combination which causes the immediate deflection or displacement due to all permanent loading) and at least one ordinary combination must be defined.