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Status Needs review
Created by Guest
Created on Apr 9, 2026

Column connection eccentricities

I would like the column connection eccentricity use the actual column geometry to consider whether the centerline of the beam strikes the web or the flange of the column. Currently, RAM allows you to specify an angle to "split" the reaction, but this doesn't make much sense.

For example, say a beam frames 20 degrees off the strong axis of the column and your split tolerance is 30 degrees. RAM will apply full strong axis eccentric moment to the strong axis but no weak axis eccentric moment. This is correct if the beam is fabricated to frame into the column flange centerline rather than the overall column centerline. Maybe engineers want to do this, but what a pain to coordinate in Revit.

Once you do exceed the split tolerance, the moment due to eccentricity is reduced, which makes no sense at all. I don't know what that would mean in terms of actual geometry to validate that assumption.

Instead of splitting with specified angles, we should be basing moments on actual column geometry, ideally with a tolerance to ensure the connection can actually clear the flange and frame directly into the column web.

Furthermore, improve the connection eccentricity settings for rectangular HSS. We should be able to set b/2 for the weak axis connection.