Nested Family

[ShifraSpiegel]

Why is it that with the nested family attached the height gives grips which can be locked to reference planes but the width needs a parameter

[Ajay_J_S · Accepted solution]

Could you clarify your question. The Grip acts as a shape handle because the nested family has a parameter called Height which is an instance based parameter. When you add an instance based parameter you will get the shape handle grips. For the Width parameter inside the nested family it's a type-based parameter this is the reason your width doesn't have grips. I hope this helps! If not revise your question in detail

[ShifraSpiegel]

Thank you

[TripleM-Dev.net · Accepted solution]

No R2026 installed...so like cause (besides it being a type parameter)

If the reference plane inside the nested family is set to "not a reference" the grips won't show.

Tip: don't constrain nested families width etc to host reference planes, this can become unstable (only in simple families it won't)

Instead constrain the nested family only IN PLACE, meaning constrain 1 reference plane of the nested family to a reference plane in the host (In X, Y and Z direction) and control width, height or other length parameters by attaching a host length parameter to it. With this the family will be more stable than constraining them all (as Revit has a clear order of how changes should be edited)

Also a difference is if the nested family is shared or not, if shared then the controlling parameters of the nested family should be instance, any type parameters can't be controlled by the host family

- Michel