Room Bounding Structural Column Materials in Revit

I recently discovered yet another obscure, hidden away setting in Revit – when I was investigating the “Room Bounding” property of different elements.

It seems that some structural columns have a “Room Bounding” property – but not all.
This has to be one of the weirdest, arbitrary decisions made by the Revit programmers:

Material for Model Behaviour

Structural columns have a weird property – so obscure and arcane, not to mention hidden away.
‘Material for Model Behavior’

This property that can only be set in the Family Editor – in ‘Family Category and Parameters’: ‘Material for Model Behaviour’.

It can be one of 5 settings, each of which enables different properties and behaviour in the model:

  • Steel
  • Concrete
  • Precast Concrete
  • Wood
  • Other

Depending on which one you choose, it will enable properties in the family.

  • Steel has
    Connection properties
  • Concrete & Other have Rebar properties

These settings are hidden away behind the ‘Family Category and Parameters’…

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