Automatic Reinforcement of Typical Concrete Elements

A design company working with reinforced concrete structures came to us. They were already working in Revit, where the model was their working environment rather than an extra deliverable, and most of their work is reinforcement of typical elements: slabs, beams, columns, stairs, and openings. Their processes were sound and the calculations were done properly. They were also firm about two things: the reinforcement had to stay inside Revit, and it had to be real rebar in the model rather than annotation drawn on a view.

Reinforcement done properly was too expensive to do

Modeling genuine rebar by hand is slow. After the calculations were finished, an engineer placed bar after bar in Revit, reproducing a scheme the calculations already defined. In practice that leaves a team two poor options: spend the days, or skip the modeled reinforcement and represent it with 2D annotation, which is precisely what this client refused to do.

• Reinforcement had to live in Revit as real rebar, not as annotation over a view, and not detailed in an external tool.

• Placed by hand, that meant hours per typical element and days per project section.

• Because it costs so much, this kind of detailing frequently never gets modeled at all.

• Every change in the calculations restarted the same work.

Reinforcing typical elements follows standard design rules: the same logic over and over, with only the numbers changing. That made the requirements clear: the automation had to run inside Revit as a native add-in, produce genuine Revit rebar that schedules and drawings can read, and follow the design rules the engineers already worked to. None of it needed engineering judgment at the placement stage; it needed the rules written down and an engineer to enter the values.