A1 TORSIONAL Irregularity

Hello, *Irregularities of Type A1 and B2 are irregularities related to the reason for choosing the calculation method. There is no need to check for these irregularities when Dynamic Analysis is performed. (TDY article 2.3.2.1)
 
According to the regulation, it is stated that if the nb value exceeds 1.20, torsional irregularity occurs and in this case, it should be increased by multiplying the D coefficient calculated by the equation of 0.05 additional eccentricities in each floor. The effect of the increased eccentricity application is at the highest level of 20%, even in the structures with excessive torsion. You can read the articles on the comparison of the equivalent earthquake load with the dynamic analysis, except for a few insignificant sections in terms of magnification, the application of dynamic calculations results in an average of 15-20% lower than equivalent static loads. In other words, it is understood that the dynamic calculation application is not in the nature of a "sanction." that is, the regulation does not have a serious measure against torsion, it is our responsibility here as engineers, although the regulation does not impose any sanctions, placing symmetrical curtains prevents torsion, but asymmetrical, that is, the building only one side We should try to keep the centers of mass and rigidity as close as possible, and we should not forget that there is a tower structure in the regulations, it may not be 100% sufficient, engineering is to be able to comment and criticize, and to put something more on it. Good work.
 
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