Is the integration width of ribs the same as the effective width?
No, the integration width corresponds to the load application width. The effective width can be adjusted in the design module, if necessary. In the case the plate component is in the compression area, the effective width is tha same as the integration width by default.
Structural engineering software for finite element analysis (FEA) of planar and spatial structural systems consisting of plates, walls, shells, members (beams), solids and contact elements