Weak floor fault in the attic

[kyuceturk]

Hello, In my project, the top floor and the roof above it will be covered with a steel roof. However, the core curtains of the building, where the elevator and fire escape are located, go up to the top. Therefore, only curtains and engine room flooring are available on the last floor. Naturally, the cutting area of the top floor can be less than 60% of the bottom floor. However, this situation will actually create a weak floor weakness. Can I ensure that these floors are not checked in the controls? Or how can I solve the problem. Thanks

 

[Levent Özpak]

Hi, In my project, the top floor and the roof above it will be covered with a steel roof. However, the core curtains of the building with the elevator and fire escape go up to the top. Therefore, only curtains and machinery on the last floor There are floors of the apartment. Naturally, the cutting area of the top floor may be less than 60% of the lower floor. However, this will actually create weak floor weakness. Can I ensure that these floors are not checked during the controls? Or how can I solve the problem. Thanks

Hello, Weak floor irregularity (B1 Irregularity) is the ratio of the effective shearing area at any floor to the effective shearing area of the next floor (TDY 2007 item 2.3.2.3) Therefore, the decrease in the building area on the upper floor does not cause a weak floor problem.

 

[kyuceturk]

You are right, I realized that I was asking wrong. Namely, there are 2 rigid diaphragms on the 13th floor, and a single diaphragm on the 14th floor above it. Both of these are floors with cores only. But I think on the 13th floor the curtain areas are divided into two. in this case it has 50% less cutting area than the previous one. I am attaching the file below. The same project is attached to my other question today. Thanks

You do not have permission to view link Log in or register now.

 

[Levent Özpak]

You're right, I realized I was asking wrong. Namely, there are 2 rigid diaphragms on the 13th floor, and a single diaphragm on the 14th floor above it. The curtain areas on the floor are divided into two. In this case, it has 50% less cutting area than the one above. I am attaching the file below. The same project is attached to my other question today. Thanks

You do not have permission to view link Log in or register now.

Kutay

There are 2 different rigid diaphragms and curtains not connected to the rigid diaphragm on the 13th floor In this case, the curtains that are not connected to the rigid diaphragm are not included in the Floor effective shear area.