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Turkish I've gone through the entire forum but I'm writing because I couldn't find anyone with a problem close to mine. I have 3 questions. 1 - In my project I get B2 irregularity on the Top two floors. Although I have a high ground floor height, I was very surprised that I received B2 on the upper floors. I have checked many times to see if I may be making a wrong entry, but the result is still the same. I tried on curtain and column reinforcement to various places available in the project. Is it normal to have a soft floor on the top floor? What should I do to fix this. 2- In my project, I used curtains at the corners, but the short part of the "L" shaped curtain causes problems in geometric analysis since the aspect ratio is not 1/7. I need to introduce this "L" shaped curtain more different. 3 - I need to enter the Live Load Coefficient of 0.60 in my project. Even though I changed the Default value of 0.30 from the Floor Parameters section for each floor separately. When you analyze, this value becomes 0.30 again. In this case, it is not understood according to which coefficient the calculations are made. Thank you in advance for your immediate assistance.
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B2 Irregularity and the Curtain Problem.....
- Thread starter coolaly
- Start date
YasinTezel
Member
Hello, if you add your project, I will try to help.
YasinTezel
Member
"coolaly":1h26fc1j" said:The size of the file is a little too big (39 Mb) to upload. I tried to upload but failed. If you record with the "save" command, you can record in cde format in low size.
1. The reason for the rise in the last two floors may be due to the fact that the roof is reinforced concrete and the floor height is reduced. If the last two floors are exactly the same or if there is only a difference in the legs, it is very unlikely that B2 will come out. However, although B2 is a serious irregularity, its bindingness in the regulation is in terms of calculation method. There is no problem as ide already performs dynamic analysis. But from an engineering point of view it would be appropriate to remove b2. In addition, since the height of your ground floor is a shop and the outer walls will be glass instead of walls, you have both B1 and B2 irregularities on that floor. although the program does not give a B2 error. 2. The geometry check will rightly warn that there are no curtains. If it does not pose an architectural problem, I recommend converting it to an L column with a width of 25 cm. 3. When you enter your moving load participation coefficient of 0.6 and enter any different number, if your Fx Fy values in the floor parameters change before and after the analysis, it means that it is taken into account.
I tried to reinstall it but it was still too big. Sorry, the clipboard attachment quota has been exceeded. he sends a message. I zipped the project again and uploaded it to
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, I would appreciate it if you're interested.HakanŞahin
Administrator
The project cannot be downloaded from the link you provided. Please check again.. We will try to answer your questions as soon as we can reach the project.
HakanŞahin
Administrator
It can be downloaded by saving as on the link. No problem right now. I will try to review your project and answer your questions as soon as possible...
HakanŞahin
Administrator
"coolaly":3o9fq9u0" said:I have visited the whole forum but I can't find anyone with a problem close to mine. I am writing because I have 3 questions. 1 - In my project I get B2 irregularity on the top two floors. Although I have a high ground floor, it gets B2 on the upper floors. I was very surprised that I was making a wrong entry. /quote] B2 irregularity is determined from the ratios of the effective floor displacements according to the system you entered, and a control is made between the rigid diaphragms corresponding to the same floor level. The program gives B2 irregularity according to the system you entered. B2 irregularity only changes the reason for choosing the calculation method and beta coefficient according to TDY. In any case, dynamic Since the analysis is done, it is not necessary to eliminate this irregularity. is to be able to model the acceptances correctly according to your system. Therefore, you should check whether your rigid diagram assumptions are appropriate for the system. For example, on the ground floor will RD2 be separate or will it be included in RD1? Because RD2 is massively dependent on RD1 with beams. (CD0001 and CD0002 tiles). I think it is possible to solve these tiles in the same aperture with the main mass on the left. To do this, mark the floors of RD1 and RD2 on the ground floor. Enter the object properties. In the Static tab, check "automatically generate rigid diaphragm regardless of connection" and give the rigid diaphragm index 1."coolaly":3o9fq9u0" said:2- In my project, I used curtains at the corners, but the short part of the "L"-shaped curtain causes problems in geometric analysis since the aspect ratio of 1/7 is not provided. I need to introduce this "L"-shaped curtain differently.[ /quote] The geometry control gives you a report about the dimensional control. .There is no binding. Even if you enter the parts that do not meet the curtain requirement, as a system, the elements are actually columns or are integrated with the other part. You can enter that part as a column, but this time the column conditions with high ductility are It may be best to define all of them as polygon columns together with the other part.There does not seem to be a problem with this. When you have different rigid diaphragms in your system, the program waits for you to confirm the rigid diaphragm acceptance conditions each time you enter the floor parameters. Always keep the acceptance you choose at this stage the same as the one you chose during the analysis. You can see what the live load reduction coefficients are taken from the optional reports/floor general information report. I hope I could help. Good work"coolaly":3o9fq9u0" said:3 - I need to enter the Live Load Coefficient of 0.60 in my project. Even though I changed the Default value of 0.30 from the Floor Parameters section for each floor separately. When you analyze, this value becomes 0.30 again. In this case, it is not understood by which coefficient the calculations are made.
HakanŞahin
Administrator
Hello, you don't have to fix B2 irregularity as we take into account 5% eccentric and do modal analysis. But; There are insufficient elements in your project. You have to concentrate on these. Your system is too weak in the X direction. It looks like you will need to modify your carrier system to strengthen it in the x direction. Good work..