For the attached configuration, I am looking at 2 options to support a girder at a WF beam location. Vertical cover plates will be added between the flanges to make a more torsionally resistant box section. The question I have is, does the magnitude of the torsion vary depending on if a top mount hanger is used vs. a bearing seat bracket welded to the web? In the attached drawing, the distance from the centroid of the beam to the centroid of girder bearing is the same leading me to believe the magnitude of torsion is equal. However, I "think" there may be more torsion when the load is hung from the top flange. Can't quantify this in my head though if there is in fact a difference.