What am doing wrong?

Question

Dear friends, I need help!!! 
 I don't know if I am doing something wrong or what I am doing is not possible in Staad Pro. 
 I have a 12 levels building modeled in Revit and sent to ISM

Then sent to Staad Pro, the Analytical model:

It is a building with elevator concrete wall in the middle (it was modeled floor to floor - I don't know if it is one of the problems!), with a concrete slab over in beams (there are some overhang slabs) 
 I had already test the integrity, included the column and walls support, and all the slabs notes are in the same levels.

The model in the Analytical model: 
 
 Then I select both load cases, In analysis command chose "All" 
 
 But when I run the Analsyis I receive 84 error!!!!

all about plates!!! 
 and message about number of nodes:

What am doing wrong??? It is not possible do model a irregular shape slab in the physical model and send to the analytical one? 
 If not, what is the workaround? 
 
 Thanks 
 
 Gustavo

Modestas · Accepted Answer

Would you be able to attach that ISM Repository? We could check why badly shaped plates are generated.

AndrejLogunov · Answer

Hi, 
 It is most likely that the plates that reported as error are badly shaped. Please inspect then graphically and have a look at this Wiki: https://communities.bentley.com/products/ram-staad/w/structural_analysis_and_design__wiki/30380/badly-shaped-plate-element 
 The "more than 999" message is explained in this thread: 
 https://communities.bentley.com/products/ram-staad/f/ram-staad-forum/158830/staad-pro-connect-edition-note-total-no-joints-is-greater-than-999

Gustavo Vasconcellos · Answer

Thank you very much Andre 
 It help me a lot! 
 
 I found that two nodes were very close to each other and I had the same slab over it (the distance was 2cm):

Another problem that I found was that I had to split the slab that were over the elevator shaft:

after fixing these two items, it worked. 
 Thanks 
 
 Gustavo

What am doing wrong?

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