There is functionality in Revit Extensions that could add reinforcement to pile caps and piles, shown as below,
But you may find sometimes that the piles or pile caps can't be supported for reinforcement. Just like below image, from the geometry, category, structural material type settings, there is no any difference between them. But one can be identified by Revit Extensions, the other one yet cannot. What's the reason?
The reason for this is just because whether or not the nested piles are shared or not.
For the 2 pile cap families, the piles are created as nested family and then nested into the cap host. The only difference between them is:
So there is difference when adding reinforcement using Revit Extensions.