Considerations on the dimensioning of columns with dimensions less than that established by NBR 6118 (ABNT, 2014)

The search for methods that provide savings greatly drives the alternatives when it comes to cost reduction. obsession with aesthetics and cheaper civil construction, can lead unexpected dangerous results. reduction of dimensions columns be done consciously, always keeping in mind compliance normative standards combined structural optimization. objective this work was evaluate efforts resulting from minimum beyond established by NBR 6118 (ABNT, 2014) compare considerations 15575 2013) about a possible permission reduce columns. For this, software MathCAD, Eberick SAP2000 were used implement calculation design variables evaluated steel area ​​columns different cross sections, length buckling necessary anchoring beam would need anchor As result, found relation area, decrease section resulted increases area. not acceptable (λ> 140) cross-section column less than 19 cm situations double height up 6 m height, according cites. criterion reinforcement smaller 14 feasible all situations.