Reducing twisting stiffness in concrete slabs

[Jummybear]

Is it possible to do that? I want to look on Mxx and Myy bending moments results on my slab after reducing twisting stiffness to 50% 10% and 0 but i cant find the exact place to modify it. Any help will be appreciated.

[HoshangMustafa · Accepted solution]

Hi

Is it possible to do that? I want to look on Mxx and Myy bending moments results on my slab after reducing twisting stiffness to 50% 10% and 0 but i cant find the exact place to modify it. Any help will be appreciated.

Please find the attached file.

[HoshangMustafa · Accepted solution]

Is it possible to do that? I want to look on Mxx and Myy bending moments results on my slab after reducing twisting stiffness to 50% 10% and 0 but i cant find the exact place to modify it. Any help will be appreciated.

[Jummybear]

Thanks for reply. I also found that place and was trying to "play" with that coefficient k12 but i get very strange results.

1. Firstly, i was trying to put 0.1 insted of 1.0. I get smaller Mxy moments and bigger Mxx and Myy moments as I was expected but reduction of Mxy was only about 10% and increasing of Mxx and Myy also ~10%. I thought that relative value should be more than 10%.

2. Secondly, I cant put coefficient 0, Robot dont allow to do it. I also tried 0.01, 0.001 and so on but it had no infleunce to Mxy and Mxx and Myy as well.

Thats why i am asking as i am doing something wrong or not. I can try by yourself by putting coef k12 0.001 or whatever small number you want and you still have Mxy moments.