different results between CBS and ROBOT

[Anonymous]

I've exported a building from cbs to robot but i dont find the same results .the support reactions are different between cbs and robot . See pictures attached. Pleeeease could somone explain to me . Thanks.

Regards 

[Anonymous]

difference of 200 KN ??? that's a lot 

[Artur.Kosakowski]

Try to calculate Robot file assuming thickness of all slabs being 1 cm.

[Anonymous]

But If I assume the thikness of slabs being 1 cm, the reactions due to the self weight will be wrong.

[Artur.Kosakowski]

The aim of this test is to check how much of the difference you mentioned is caused by using the load takedown approach vs. distribution of load based on stiffness of elements of a model. I believe that you can replace automatically generated self weight with the surface loads corresponding to the real thicknesses of slabs. Otherwise you may create new materials with appropriately scaled density.

If you find your post answered press the Accept as Solution button please. This will help other users to find solutions much faster. Thank you.

[Anonymous]

Exporting maybe is the culprit. try creating  a whole new project in robot. then compare the reactions...