Curtain Systems

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ganymede

New Member
Hello to everyone. The program does not give a 1/16 warning when I cast 25 cm thick curtains in my project whose ground floor height is 450 cm (or 500 cm) due to the basement curtains. My system consists of curtains and columns, the number of curtains is more. When I reduce the curtain thickness to 20 cm for trial purposes, "Curtain thickness cannot be less than 1/20 of the storey height. (TBDY 2018 7.6.1.3)''. When I look at this article from the regulation, I see that the article is about buildings whose carrier system consists of curtains. Is it true that the program sees the system as a curtain wall system even though there are columns in the floor plan? I don't get a warning for the R coefficient either. Note: Curtain tipping moment ratios are around 0.40 in both directions. Respects.
 
"ganymede":351s90pe" said:
Hi everyone. The program does not give a 1/16 warning when I cast 25 cm thick curtains in my project, whose ground floor height is 450 cm (or 500 cm) due to the basement curtains. My system consists of curtains and columns, the number of curtains is more When I reduce the thickness of the curtain wall to 20 cm for trial purposes, I get a warning like "The thickness of the curtains cannot be less than 1/20 of the storey height. (TBDY 2018 7.6.1.3)" When I look at this article from the regulation, the article is about buildings whose carrier system consists of curtains. I see that there are columns in the floor plan. Is it correct that the program sees the system as a curtain wall system? I don't get a warning for the coefficient R. Note: Curtain rollover moment ratios are around 0.40 in both directions. Regards.
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Hello, Attaches the project file are you?
 
Hello. Since TBDY 2018 provides two controls in Equation (7.14) in article 7.6.1.3 in your project, the wall thicknesses are controlled according to 1/20 of the storey height. In addition, there is an explanation in this article for buildings whose carrier system consists of curtains. It is valid in systems such as Tunnel formwork, all of which are formed on the curtains. My advice would be to size the wall thicknesses according to H/16 in your project. Note: If you want to check. If you select all curtained (A12, A13) systems in the X and Y direction structural system type selection section of the TBDY 2018 Analysis settings wizard, you can get the Curtain ratio control report.
 
Thank you. So, is it normal for the overturning moment ratio to remain around 40% even though there are so many curtains in the system? Reason; Is it because the beams don't provide the bond beam commitment degree? How is the remaining 60% met?
 
It is normal. The remaining 60% of the columns are supported by the overturning moments generated by the normal forces of the columns and walls. You can review the related posts in the link below.
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