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Steel StructuresStructural DesignStructural AnalysisUltimate LoadFire ResistanceTest ResultsResidual StressesSteel MembersUltimate StrengthStructural SteelStructural MembersWelded SteelCalculation MethodsDesign MethodsComposite ColumnsComputer ProgramPlastic DesignStructural MemberSafety FactorHollow Sections