RC COLUMN DESIGN - ACI - Shear for columns ( L-shape)

[Refaat]

Dear Colleagues

Could I know  why does ROBOT give me unsafe section for L-shape column due to the shear force even  when I increased the section to very large dimensions  e.g ( all members  have dim CL 190x190 in the attached model)? but when I  changed the section shape to rectangular   ( the cross section area is about 50% from L-shape ) the ROBOT gave me very large safety factor for shear? Does that mean( ROBOT doesn't   calculate the shear for this type of sections) ?

http://www.2shared.com/file/tkN95hX9/ModelCapture.html

Thanks in advance

Refaat

[Artur.Kosakowski]

Could I know  why does ROBOT give me unsafe section for L-shape column due to the shear force even  when I increased the section to very large dimensions  e.g ( all members  have dim CL 190x190 in the attached model

I'm not sure if I understand you correctly but on the picture the safety ratio for L section is infinity which is very very large (Robot displays inf above certain very large value) so it is actually safe.

but when I  changed the section shape to rectangular   ( the cross section area is about 50% from L-shape ) the ROBOT gave me very large safety factor for shear?

Which is smaller then for the L one

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[Refaat]

Dear Artur

Thanks a lot for your fast response . the section is unsafe when I consider the shear in calculation as it appears in the attached capture 01 while when I don't consider the shear I don't receive any error message as it appears in the attached capture 02 .

Any help please .

Refaat

[Artur.Kosakowski · Accepted solution]

Dear Refaat,

The shear design for L shape columns is currently not supported for ACI code. I have added this to the wish list.

[Refaat]

Dear Artur

Thanks alot for this clarification

Refaat