Columns have joint face distances at the top and the bottom ends in both the major and minor directions. The column joint face distances are determined from the depth of the beams that frame to the column under consideration.
At each end of a column the joint face distance is calculated by:
| Major Axis Rigid End Dist = 0.5 * Depth * Cos2θ | (6.9) |
| Minor Axis Rigid End Dist = 0.5 * Depth * Sin2θ | (6.10) |
| (6.11) |
where
| BeamDepth | = | the depth of the beam that frames into the columns |
"Major Axis Rigid Dist" and "Minor Axis Rigid Dist" are calculated for each beam that frames to the column, and the largest value is used. For pinned columns, the rigid end zone distance that corresponds to the direction of moment release will be zero. Pinned beams produce no rigid end zone.
Joint Face Distance for Columns
