Wide Spans in Hollow Hole

[kadirbulut2012]

Hello, can you review my attached project and give an idea about how to pass these openings with a hollow block? Is it safer to add an extra column, or will these openings not cause problems for the hollow block-cassette system? The regulation requires 1/20 of the opening, an average of 35.5 cm thickness is required for 7.10 m openings, but the condition of 30-32 was given to me. Therefore, I am waiting for your solution suggestions, from the manager and other friends. There may be extra mistakes in the project, but I hope my question has been understood.

 

[kadirbulut2012]

In addition, can I attach stud beams to basement curtain walls? Do the floor plan differences of the basement floor and other floors cause problems? ? Is it right to make a beam stud through the middle of the opening we call 7.10, cut the span in half and exceed the 1/20 requirement in the regulation? Is this to deceive the program and the regulation? Throwing parallel to the long beam is correct according to a few articles I read on the net and according to a few people I know, but I have my doubts. An intermediate beam is thrown at a span of 4-7. Does this mean throwing one intermediate beam in every three meters after 7? I may have silly or unnecessary questions, may be without education, inexperience. I'm trying to learn.

 

[isaridurmus]

In addition, can I attach stud beams to the basement curtains? Will the floor plan differences of the basement and other floors cause problems, weak floor, asymmetricity, etc.? Is it a correct way to download it and exceed the 1/20 requirement in the regulation?Is it cheating the program and the regulation?Throwing parallel to the long beam is correct according to a few articles I read on the net and according to a few people I know, but I have my doubts.An intermediate beam between 4-7 the number of this beam is thrown, does it mean to throw an intermediate beam every three meters after 7? I may have silly or unnecessary questions, it may be due to lack of education, inexperience. I am trying to learn.

One cross beam after 4m, between 5m and 7m 2 grain transverse beam at Sent from my SM-N9000Q using Tapatalk

 

[NYILMAZ]

The openings are not many. But I may have a word for those who brought you the 30-32 condition, but this is not the place. I didn't see 7.10 opening. I don't understand where you are talking about. Values such as slab net openings 6.30 5.85 etc. You can attach any beam you want to the basement floor curtains from wherever you want, there seems to be no problem.

 

[kadirbulut2012]

Thanks for your answers, yes unfortunately I'm sure everyone is facing silly requests and limitations. I also have another question, we hesitated with another friend in this system. What should I choose for the rx, ry behavior coefficients and ductility levels of this system? If normal and 4 are selected, it changes itself and I guess that means B1 type irregularity.

 

[Levent Özpak]

thanks for your answers, yes unfortunately I'm sure everyone is facing silly requests and limitations. Also I have another question, we hesitated with another friend in this system, what should I choose the rx,ry behavior coefficients and ductility levels of this system? If normal and 4 are selected, it changes itself and I think that means B1 type irregularity.

-You can always choose high ductility level (R coefficient can be taken as 8 since there is no continuous curtain on all floors in your project. ) -The reason for the difference between the entered R and the selected R coefficient is not the normal selection of the ductility level, but the occurrence of B1 irregularity Tdy 2007 item 2.3.2.3

 

[kadirbulut2012]

Does it make sense to enlarge the column sections to avoid B1 irregularity?

 

[Levent Özpak]

Is it reasonable to enlarge the column sections to prevent B1 irregularity?

In the project, B1 irregularity occurs because the effective shearing area of the wall on the ground floor is less than that on the 1st floor. Calculates from the wall loads. If the wall effective shear area on the ground floor is thought to be larger, you can intervene from the Akx, Aky columns in the Analysis / Floor Parameters / Irregularities tab. If the wall effective shear on the ground floor is as calculated, then the column dimensions can be increased or the infill wall area on the ground floor can be increased Note: You can also solve your project in its current form, as the nth value does not fall below 0.6.

 

[kadirbulut2012]

Lastly, there is a subject I am curious about, for example, we do not receive any error warnings when receiving reports like in this project. And if we don't pay attention, we can ignore this rx ry. If it fell below 0.6, would that value be reported to us as an error? and If there are no errors in the report, does it mean that the project is above certain values and is feasible? Let me give a small example in case I couldn't explain: the project has been analyzed and no errors have been received, but rx ry has changed, there are A1 and B1 errors or similar situations. But there is no error warning in the report. So, can we say that the calculated and designed carrier elements of this project are suitable?

 

[MaFiAMaX]

Since I can't open the model, I'm speaking by assumption. As Levent mentioned, if you do not have curtains that continue throughout the building and your flooring system is threaded flooring, I suggest you pay attention to DBYBHY 2007 item 2.5.1. Here, ductility levels, earthquake zone, building importance coefficient and shear conditions are included. In other words, if you do not meet some conditions, you cannot solve your building with high ductility. Good work.

 

[Levent Özpak]

Finally, there is one thing I'm curious about, for example, we don't get any error warnings while getting reports like in this project. And if we don't pay attention, we can ignore this rx ry. Was it presented to us as an error in the report? and if there is no error in the report, does it mean that the project is above certain values and is applicable? There are B1 errors or similar situations. But there is no error warning in the report. Then, can we say that the calculated and designed carrier elements of this project are suitable?

In case of Nci<0.6, a warning is given in the error detection list. 0.6<=nci< If it is 0.8, the program reduces the R coefficient by multiplying it with the 1.25th value and this solution complies with the regulation. i would fit.)