Rebar modelling in Revit with Dynamo for blended shapes

Since a few weeks, the package “Dynamo for Rebar” has been released. With this package, Dynamo allows you to model Rebar objects in Autodesk Revit. This opens up a lot of opportunities for automating rebar generation, complex shape modelling and so on…

In this topic I want to explain you more about a script I made in Dynamo to generate a steel rebar cage in a blend-shaped concrete column.

    

There are a few conditions which the rebar objects need to meet in this design:

  • The longitudinal bars need to follow the inclination of the blended shape
  • The hooks at the bottom of the longitudinal rebar will different for each bar that has another inclination
  • The hooks need to point to the center of the bottom face of the column.
  • The stirrups vary in size depending on their relative height position in the column (that’s an obvious one)

    

The datasets can be downloaded here. This script is working in Revit 2016, Dynamo 0.8.2 and the package Dynamo for Rebar v1.7.

The video below shows how the script works. You will find out that it is pretty handy to use. You can also apply this script to beams with varying height, though the longitudinal rebar might be changed a bit in Dynamo to get rid of the special hooks.

If you want to see more of this into depth, then register for one of my classes on Dynamo at Autodesk University 2015 in Las Vegas:

MSF11845 – Dynam(o)ite Your Design from Concept to Fabrication
Monday, Nov 30, 2:45 PM – 3:45 PM  (Fabrication Forum)

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