Good Day,
I am currently modelling a staircase supported by a moment frame and I have come across a strange occurrence. When I checked my column forces the axial forces seemed alright but the moments were strange as the moments generated along the top portion of my column is greater that that of the lower portions and supports, which seems incorrect based on the theory of bending moment. The model I generated employed the use of beam elements for my columns and beams and plate elements for my columns. I have included the Staad file for inspection.
Thanks. (Please visit the site to view this file)