Parent-Child References

Revit Family App lets you combine components like frames, mullions, panels, etc. to quickly create Revit Families (currently only Revit Window Families, with Revit Door Families coming soon).

These elements have a parent-child relationship between each other, allowing you to create custom parametric layouts.

Previously to this update, these nested relationships would let you control the relative positioning between parent and child in x-direction (left/right) and z-direction (bottom/top) via insets, however the y-direction (exterior/center/interior) was limited and not at all unified between different element types.

So what does that actually mean and how does it help you to create truly custom, parametric Revit families?

References

Layouts, Frames, Mullions, Panels and Sills let you control their positioning relative to the parent element that they are nested in.

Parent Reference

The parent reference showing as WallOpening Reference in the above screenshot, lets you set what the element reference relates to within the parent. The parent reference can be set to Exterior, Center or Interor.

Reference

The reference showing as Frame Reference in the above screenshot, lets you set the actual element reference. The reference can be set to Exterior, Center or Interor.

Reference Offset

This allows you to set a positive or negative value to offset the element from the set reference. Negative values offset towards interior and positive values towards exterior, according to the Revit Family coordinate system.

A few examples

Frame flush interior side in Wall Opening

WallOpening Reference: interior (= parent)
Frame Reference: interior (= nested element)

Trim (Frame) exterior of Wall Opening

WallOpening Reference: exterior (= parent)
Frame Reference: interior (= nested element)

Flexible Profile Depth/Width

Frames, Mullions and Sills allow you even more flexibility, with the option to set the profile depth (frames and mullions) or profile width (sills) to flex between 2 parent references.

That means instead of a parent - child relationship, the profile stretches between 2 selected parent references instead, as shown in the following two screenshots, which is great when

Frames and Mullions

Sills


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