For users who already have the base software installed, these official patches are necessary for modern compatibility:
Creation of parametric steel sections and reinforcement bars that automatically update in schedules. autocad structural detailing 2015 download fixed
If you still have a legitimate license for the 2015 version, you can typically download it directly through your under the "Past Versions" section. If you do not have a license, I recommend exploring a trial of the Revit Structural Design tools instead. For users who already have the base software