Column reinforcement problem

[mgondem]

Hello, I need your help at a point that I cannot interpret as a new graduate while learning the static program. As an example, in the project I designed, the 2nd basement floor S32 column gives 56 reinforcements, while this number drops to 20 in the 1st basement. As a design, I can see that KM and RM move away from each other in the 2nd basement floor and the moment of inertia of the relevant column in the Ix direction is low. When I examine the results of the analysis, it is observed that large forces occur in combinations with earthquake loading. Despite all this, the fact that the reinforcement in the 1st basement is quite low confuses me. As a result, there is no big difference between the 2nd basement and the 1st basement as a building mass, they are also connected to the same node. I was never satisfied. I suspect I am doing something wrong. I would appreciate it if you could take a look at my project and help.

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Best regards. Mehmet GONDEM

 

[YasinTezel]

Hi, it would be appropriate to take the Upper Rigid floor numbers Rx and Ry -3 because you do not have enough bulkheads to define a rigid floor. Erase the curtains and foundation space you defined for the elevator shaft. Do not model the elevator pit. Show in details. It is explained in detail in the link below.

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Since you are making a pavement interactive solution, the foundation and soil type also have an effect on the pavement solution. You basically made an indentation under the S32 Column up to the M axis. If you remove this indentation and increase the ampatage distance, the reinforcement of the S32 column decreases.

 

[mgondem]

Hi, It would be appropriate to take the Upper Rigid floor numbers Rx and Ry -3 because you do not have enough curtains to define a rigid floor. Delete the curtains you have defined for the elevator shaft and the gap in the foundation. Do not model the elevator pit. Show it in details. It is explained in detail in the link below:

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Since you are making a superstructure interactive solution, the foundation and soil type also have an effect on the superstructure solution.You have made an indentation under the S32 Column up to the M axis. If you remove this indentation and increase the amplitude distance, the reinforcement of the S32 column decreases.[/ quote] Thank you for your help. You may be right about the upper rigid floor number. The municipality wants the elevator shaft detail. Moreover, they check it as idecad data. Widths of curtains, raft thickness Maybe it should be done in the next day, but this time they want what's in the project. Would they make the 80 cm thick curtain for the well? Isn't solving superstructure interactively closer to reality? As a result, support collapses occur. I had thought of the apartment, but probably didn't realize it because I didn't make it big. My problem was solved to a large extent when I enlarged it as you suggested. Thanks.