b1 disorder

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dexana

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Friends, whatever you did, I couldn't fix the b1 irregularity... I'd be glad if you could help me... I'm adding the project...
 
Hello, I did not encounter a warning about B1 irregularity in Ver 6.2007 in the project you added. Project determinations and suggestions ***2. DB117 floor level in the basement is incorrectly placed. The elevation of KB116 and KB119 beams is not compatible with the flooring. In cases such as By, when placing the intermediate landing floor, instead of connecting the beams at the upper level, it would be appropriate to create a closed floor by drawing the floor edge a few cm from the inside as in the example. ***The misalignment and size of the SB05 column in the 1st basement floor is not compatible with the 2nd basement floor. ***Because there are no basement perimeter curtains on the 2nd basement floor, it would be appropriate to enter the upper rigid basement floor number -3 in the Analysis Settings/TDY Options tab. *** In addition, when the project is analyzed, more than one rigid is formed due to the intermediate landing floor at -110 cm elevation in the 1st basement floor. In such cases, it would be more appropriate to tick the -rigid diaphragm creation- option in the static tab of the relevant tile's settings. Good work
 
Thank you for your help and suggestions...but I have a constant b1 irregularity problem and I still haven't figured out why. When I look at the details of the report, it comes out as nci>0.6. What solution would you suggest?
 
yes it does...even though it doesn't appear in the report errors section, it shows the report details there...
 
Yes, you are right, I think I misunderstood. -B1 irregularity refers to the Strength Irregularity Between Adjacent Floors.- If the cross-sectional areas of columns, walls, and walls on the i.floor are below 0.8(nth) when compared to an upper floor, the system stiffness must be increased. If the th is between 0.6-0.8, the R coefficient is multiplied by the 1.25th value as per article 2.3.2.3 of the regulation, which the program does automatically. In your project, you don't need to do anything because the th value is between 0.6-0.8. Since the effective shearing area of the wall calculated from the wall loads on the 1st floor in your project is higher than that of the ground floor, it is taken as zero as per article 2.3.2.3. If you want, you can define the effective shearing areas of the walls in each floor in the Akx and Aky lines in the Analysis Menu Floor parameters/Irregularities tab. Good work
 
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