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[Tall building with high torsion at mode shape 1 and 2]

[Tall building with high torsion at mode shape 1 and 2]

[Tall building with high torsion at mode shape 1 and 2]

I'm having problems with modes 1 and 2 because they are torsional, not translation. From other questions in the forum, I should check my core and shear wall location, but the torsional value is so big that I think my building is broken, I took this construction from another company to use it as a thesis topic.

I already have mass source and rigid diagram.

The picture is showing the torsion in mode 1. The white line is the shear wall, and a core is in the middle. And I also upload my Etabs file.
My school doesn't teach me anything about etabs or this kind of thing so I'm really frustrated.

Thank you.

RE: [Tall building with high torsion at mode shape 1 and 2]


Quote (Hoang17520)

Can you show the diaphragm, on Plan, also tell us about what is your mass source? Also let see what is the torsional situation like give us some value?

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