Column Reinforcement Difference Between Floors

[k.sener]

the basement floor is surrounded by curtains and I enter the upper rigid basement floor number as -2. While the column reinforcements in the basement and other floors are the same, the longitudinal reinforcement of the columns on the ground floor has 3 or 4 reinforcements more. and increase in nd load 4-3-2-1. While it increases proportionally on the floors, there is a sudden increase in the ground floor. What should I do in this case, do you think it's normal?

 

[Levent Özpak]

If your floor surrounded by basement perimeter curtains is the 1st basement floor, you must enter upper rigid floor number -1. If the column reinforcements on the ground floor are higher than the other floors, it means that the columns are more difficult on this floor. For this ; The number of reinforcements in the lower floor or floors can be made the same as the ground floor, Column sizes can be enlarged to reduce the cross-sectional stresses on the ground floor, etc.

 

[k.sener]

-1 issue solved the problem, thanks. I learned from a friend that it is normally -1 but the increase is made as the basement is added, but it is necessary to read