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Etabs column reinforcement distribution along the height

abbaskhan2294

By abbaskhan2294,
in Software Issues

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abbaskhan2294 Rookie

abbaskhan2294

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Hello everyone. I want to discuss this general issue of Etabs related to column reinforcement distribution along the stories. I usually observe that the reinforcement in the top story exceeds the bottom story whereas in convention if u go through the mechanics the load on the lowest stories is maximum as compared to the column at the top story at the same level. What can be the possible reason for this? 

Note that the columns size and material used are same throughout the stories.

Also the reinforcement of columns in a high rise building at the topmost story is shown greater by etabs than the columns at the same position in the preceding story (normally a story or two below). I understand that is probably because of the reduction in the redundancy of the structural element?

 

Etabs columns reinforcement.PNG

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