Am using staad pro v8i ss4, I need to design a 'I' beam which is having side plates that is equal to flange thickness of 'I' beam. In eurocode design there is parameter called GST. Is it correct to give GST 2 (i.e design as tube section) for that beam.?
The ratio shows more difference.. without assigning GST 2 parameter ratio is upto 7 and after assigning it ratio becomes 0.8. Can anyone please explain this..