The　paper　presents　an　investigation　on　welded　stainless　steel　I-section　columns.　In　total,　22　experiments　on　welded　I-section　columns,　including　members　buckling　about　major　and　minor　axis,　for　both　austenitic　and　duplex　stainless　steel　columns　were　carried　out.　Specimen　cross-sections　and　lengths　were　carefully　selected　to　cover　a　wide　range　of　geometries　and　non-dimensional　slenderness.　Measurements　were　taken　on　geometry,　global　initial　geometric　imperfection,　residual　stresses　and　material　properties.　The　experimental　results　have　been　supplemented　by　the　finite　element　simulation.　The　resulting　structural　performance　data　have　been　used　to　assess　the　applicability　of　the　current　design　provisions　from　EN　1993-1-4,　ASCE　8-02　and　AS/NZS　4673　for　the　design　of　stainless　steel　welded-I　sections.　Results　showed　that　the　design　provisions　from　EN　1993-1-4　and　AS/NZS　4673　can　be　conservatively　adopted　while　the　ASCE　8-02　provision　shows　scattered　predictions.　(C)　2016　Elsevier　Ltd.　All　rights　reserved.