Hello, In the project, the conditions for slab type unidirectional gear slab and mixed ductile solution are not met. There is no shear in the Y-axis direction. TotalMdev<0.75 Mo in the X-axis direction. It would be appropriate to return to the beamed slab flooring system and make a highly ductile solution.You can examine TBDY 2018 Article 4.3.4.3, Article 4.3.4.6 and Table 4.1. Good work"ÖmerKALAY":ml5phz0k" said:Hi, I'm solving a 3-storey hollow block building. As a result of the analysis, it gives the error 'The 1st floor relative floor drift is high. Increase the system rigidity'. I would be glad if you could help. Thank you.