How to understand earthquake regulation 4.3.2.4

Re: How to understand the article 4.3.2.4 of the Earthquake Code One of my teachers gave an opinion, I am copy-pasting the message exactly. I found out that there are two views. One of them was that the clause was valid only for reinforced concrete curtain wall systems and the other was that it was valid for curtain wall and frame systems. During the regulation speeches, I could not remember the discussions on the subject. I looked for ASCE 7-05, unfortunately I couldn't find it. However, from what has been written, I understand that this article only applies to pitched (without frame) systems and I agree that it is appropriate. Greetings
 
Re: How to understand the article 4.3.2.4 of the Earthquake Code Another experienced civil engineer friend of mine gave this opinion: Mr. İsmail Hello, This item does not examine the level of ductility or the ductility of the curtain, whether it is void or not. It checks whether the curtains in the building are placed evenly. Therefore, with all structures containing curtains (except for rigid basement basement curtains); A12, A13 (in these structures, since the earthquake load is completely covered by the walls, this control provides this control, but there may be differences due to reasons such as wall thicknesses etc. It is useful to apply.), A14, A15, A21, A22, A23, A24, A32, A33 Structures that will not be applied in short: A11, A16, A31
 
Re: How to understand the article 4.3.2.4 of the earthquake code I still maintain the view that it should only be applied in curtain walled structures. There is no obligation or obstacle to the application in framed + curtain walled structures. Sent from my SM-N920C using Tapatalk
 
Re: How to understand the article 4.3.2.4 of the earthquake code As far as we understand, there is no consensus yet, there are two different decisions. How do we find out about this with certainty? The regulation already pushes high ductility to very limited or mixed solution. You definitely need to add curtains. Since this item is not clearly understood, it becomes impossible to draw a project now. Even if we stay on the safe side and apply the 4/5R item, the system is normally affected by this.
 
Re: How to understand the article 4.3.2.4 of the Earthquake Code This article should only be applied in buildings where A12 and A13 are selected for cast-in-situ reinforced concrete buildings. Even if 4/5 R option is checked in ide ver10, it should not be active in any case except A12 and A13.
 
Re: How to understand the article 4.3.2.4 of the earthquake code Another teacher from ITU sent me the following e-mail regarding the subject; According to TBDY 2018, TBDY 4.3.2.4 should be applied to all steel framed structural systems with BA curtains or braces that comply with the DTS limitation, regardless of ductility level, as TBDY 4.3.2 defines the R and D coefficients only depending on the structural system type. This limitation relates to the limitation of torsional effects in case of damage to the bulkheads. For this reason, BA should be applied to all types of carrier systems with curtains or braced steel frames. Briefly, it should be applicable to all systems except A11 A16 A31. Carrier defined in TBDY 4.3.4.5, A14 and A15 applied to the systems. This substance should not be applied to ductility level mixed carrier systems. TBDY 4.3.4.6 should be applied to mixed ductility level systems (A21, A22, A23 and A24).
 
Re: How to understand the article 4.3.2.4 of the earthquake code
"Ismail Hakki Besler":2ggn58ei" said:
Another teacher from ITU sent me the following e-mail regarding the subject; According to TBDY 2018, TBDY Since 4.3.2 only defines the R and D coefficients depending on the structural system type, TBDY 4.3.2.4 should be applied to all structural systems with BA curtains or braced steel frames that comply with the DTS limitation, regardless of the ductility level. Therefore, BA should be applied to all structural system types with shear walls or braced steel frames In short, it should be applicable to all systems except A11 A16 A31.[/i ] TBDY 4.3.4.5 should be applied to carrier systems defined in A14 and A15. This item should not be applied to carrier systems with mixed ductility level TBDY 4.3.4.6, ductility level mixed carrier systems (A21, A22, A23 and A24) ) should be applied.
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This hoc Our mother also defended the second view. Looks like you're going to have to leave a choice at this rate.
 
Re: How to understand the article 4.3.2.4 of the earthquake code
"Ismail Hakki Besler":h6rs0kbp" said:
Another teacher from ITU sent me the following e-mail regarding the subject; According to TBDY 2018, TBDY Since 4.3.2 only defines the R and D coefficients depending on the structural system type, TBDY 4.3.2.4 should be applied to all structural systems with BA curtains or braced steel frames that comply with the DTS limitation, regardless of the ductility level. Therefore, BA should be applied to all structural system types with shear walls or braced steel frames In short, it should be applicable to all systems except A11 A16 A31.[/i ] TBDY 4.3.4.5 should be applied to carrier systems defined in A14 and A15. This item should not be applied to carrier systems with mixed ductility level TBDY 4.3.4.6, ductility level mixed carrier systems (A21, A22, A23 and A24) ) should be applied.
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ismail It was an item that I did not understand, so I asked my teacher and he said that DTS covers all systems with 1, 1A, 2, 2A curtains. that is, as you said, in all systems except A11 A16 A31.
 
Re: How to understand the article 4.3.2.4 of the earthquake code On Sunday, I listened to a panel of professors from Metu that was critical of TBDY 2018.
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(link is here) Frankly, their criticisms are generally I did not find it in place. For example, 2 profs criticized Table 4.4 very seriously and said, "As DTS increases, equivalent earthquake load method can be used in higher structures ---- is there such a logic?" However, they could understand that BYS4 in DTS 1-2 is the same height as BYS 5 in DTS 2-3. They have not skipped and investigated such a simple issue, they have criticized it so severely. Frankly, I was very confused. The Regulation, which I found to be appropriate and correct in the criticisms: 1) It should be simple - its language should be understandable 2) It should not be like a textbook (416 pages are too many) Even Prof. Barış Binici uses the following expression: There is a term called 'curtained buildings', what should we understand from this? He says "fully curtained" - "screened framed", which is an apt determination. In 4.3.2.4, this article is: "For beamless floors where all of the earthquake loads are assumed to be taken by the bulkheads" or if it is "structures with at least 1 wall in the carrier system", or "A11 A16 A31" other than "A11 A16 A31" If all structures are said, there will be no question mark in minds. I still believe that this substance is an important ingredient in limiting torsional effects - it encourages the engineer to have a homogeneous pitch distribution, and only when applied to all structures except "A11 A16 A31"[ /i] I think it will serve its purpose. (forza group 2 )
 
Re: How to understand Earthquake code 4.3.2.4 article Hello; Omar, what would you answer if I asked you "Is your building curtains?"? You would say YES or NO. You wouldn't say YES but ONLY WITH CURTAIN or YES but ON THE COLUMN :) By the way, we agree on 4.3.2.4 CURTAIN should be applied in all buildings. Best regards.
 
Re: How to understand Article 4.3.2.4 of the Earthquake Code In the first update to be released, Analysis Settings Dialog Submit Article 4.3.2.4 to all systems containing BA curtain and Braced steel frame. the apply option will be added. And it will come as defaoult marked (apply). Whether this option is checked or unchecked by the user will be clearly indicated in the reports. ideYAPI will advise its users to tick this option and declare that they understand the regulation in this way, if the writing of this article in the regulation remains as it is.
 
Re: How to understand the 4.3.2.4 Article of the Earthquake Code
"Ismail Hakki Feeds":3hw1zk9p" said:
In the first update that will be released, Analysis Settings Dialog Include Article 4.3.2.4 on BA curtain and The option to apply to all systems with braced steel frames will be added. And it will be marked (apply) as defaoult. It will be clearly stated in the reports whether this option is checked or unchecked by the user.
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So it will be up to us to choose this item, completely curtained or containing curtains. It is not clear whether it will be applied in every building, as far as I understand, I think we will apply it the way we perceive it. Right now, I chose A33 as dts:1 in a 2-storey project I drew. I added curtains as it was. I also enlarged the columns to increase the Mo value.4/5 R I saved him, but a building to be built in a two-storey village with C30 concrete is really pushing the people and the economy of the country will definitely not lift this regulation. k. While most of the existing buildings in Turkey can hardly stand in compliance with TDY2007, let alone TDY2007, it has become much more difficult to construct a new building with the new regulation, as it prevents demolishing old buildings and constructing new buildings. Also, the zoning peace supported this.
 
Re: How to understand the article 4.3.2.4 of the earthquake code As long as the regulation does not change, ideYAPI recommends that you apply this article in all buildings containing shear walls.
 
Re: How to understand the article 4.3.2.4 of the earthquake code There are 4.3.4.5 and 4.3.4.6 in order to prevent the approach that I made a curtain system by adding one or two curtains in the buildings. In my opinion, item 4.3.2.4 also wants to check that the curtains are homogeneously distributed throughout the building. I think that paragraphs a and b of the relevant article are intended to control torsional irregularity. Therefore, I think that this article covers not only curtain but also mixed carrier systems.
 
Re: How to understand the article 4.3.2.4 of the earthquake code
"miralay":2l5v71v1" said:
There are 4.3.4.5 and 4.3.4.6 in order to prevent the approach that I made a curtain system by adding one or two curtains in the buildings. In my opinion, article 4.3.2.4 also wants to control that the curtains are homogeneously distributed in the structure. I think that the a and b subparagraphs of the relevant article are aimed at controlling the torsional irregularity. Therefore, I think that this article covers not only curtain wall but also mixed carrier systems.
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I am just like you. I think this is how ideYAPI technical support informs the users and the program does this automatically. If the user changes this option persistently, the information that it has been changed is clearly stated in the reports and the control is done in the direction desired by the user. Currently, the current version 10.03 already performs this check in all kinds of structures. This option I mentioned will be added in the next update.
 
Re: How to understand the article 4.3.2.4 of the earthquake code
"ottomancagatay":21ky8nk4" said:
tbdy 2018-training manual page BA-1/15 prepared by the chamber of civil engineers If you give a good example, I understand that we have nothing to do with the article 4.3.2.4 according to the A15 and A14 structures.
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it seems as if such an inference is not correct, Mr. Cagatay. The regulation made this article to distribute the curtain evenly CHECKS MUST BE DONE. IDECAD ALREADY DOES THIS CONTROL FOR A14 AND A15 TYPE BUILDINGS
 
Re: How to understand the article 4.3.2.4 of the earthquake code
"2m project":18cx08kd" said:
Hi, I also agree with the second opinion shared by Mr. Erhan. 1. Example was solved as A14-A15 and 4.3.2.4 was applied 3. Example was solved as A12-A13 and 4.3.2.4 was applied Regards.
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I SUPPORT THIS 2. OPINION
 
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