IMO and the university want me to solve fully rigid.

[mhmt_ali]

In the project I have done below, cassette flooring gives a typical beam identification error in geometric control. Can you help with the solution of this, I have solved this project semi-rigidly, but imo and the university want me to solve it fully rigid. I wonder if I really need to solve this project completely rigidly, I would be glad if you could help me on these issues

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[unver]

Re: About the cassette slab typical beam identification error Hello

imo and the university asks me to solve for full rigid.

For the project to be cassette, the spaces must be square or close to square With this logic, turn the ribs into cassette and solve it like that. After doing what I said above, the semi-rigid solution is more accurate. If they want a rigid solution, fix the semi-rigid rebars and compare if there is a problem in the rigid solution. You can get a rigid solution after fixing it. If it stays like this, you should remove the beams in the middle of the ribs and make Mixed solution I don't think it will save it.

 

[mhmt_ali]

Re: About the cassette slab typical beam identification error I made a 70x70 cassette slab on cassette slab, I made the width of the beams between them 20 cm, but I could not solve the cassette slab typical beam identification error in geometric control. I also consider it logical to solve it as fully rigid in simple structures and semi-rigid in other structures, I wonder if there is a basis for this to present it to the other side.

 

[Ismail Hakki Besler]

Re: About cassette slab typical beam identification error 2018 Earthquake Regulations require a rigid solution to be made together for semi-rigid solution in article 4.5.10. ideCAD applies Item 4.5.10 automatically. In accordance with this article, both solutions are made and the envelope of the results obtained on columns and curtains is obtained, while only semi-rigid solution results are used for flooring and beams. When you mark semi-rigid in analysis settings wizard, rigid diaphragm calculation is done automatically. The authority asking you for a rigid diaphragm solution may not have read or understood the 2018 Earthquake regulations. Also, if your system is rib cassette or cork, a semi-rigid solution must be made.