Solid (boolean operations) cut/join and phasing

[matej.munko]

Hello,

i came across a problem. I have two generic model families which are solid objects in Revit. I have one generic model from which i am "cutting" set to phase " Existující" and then i have two more phases called "Fáze 34" and "Fáze 45". Chronological order of phases is "Existující" -> "Fáze 34" -> "Fáze 45". 

Then i have another generic model (and it doesn´t matter if it is an in-place family or loaded family) which i have created in "Fáze 45". When i cut/join the two generic models i suppose revit to cut the generic model from phase "Existující" only in the phase "Fáze 45". But once i cut the two generic models, the cut is visible and propagated without the respect of phasing settings.

here in the picture selected object is cutting brown object.

phase filter for this view is set to :

when i set the phase filter like in the picture below i still see the brown generic model cutted (even thou the object with which i am cutting is not created in this phase yet, so the brown object should remain uncut)

the same happens if i set the view pahse to "Existující".

I suspect this behaviour occurs because revit somehow doesn´t puts infills in generic models for some reason ?

If so, is it so that revit puts infill elements only to system families e.g. floors, roofs, walls, ceilings?

And what is the possibility to be able to cut this with the phase settings correct or do i have to model it for every phase separatedly (that means having the brown generic model in all of the three phases ?).

[barthbradley]

Create a Graded Region COPY and cut that one instead.   

Graded Regions | Revit | Autodesk Knowledge Network

[ToanDN]

---

@matej.munko wrote:

I suspect this behaviour occurs because revit somehow doesn´t puts infills in generic models for some reason ?

If so, is it so that revit puts infill elements only to system families e.g. floors, roofs, walls, ceilings?

And what is the possibility to be able to cut this with the phase settings correct or do i have to model it for every phase separatedly (that means having the brown generic model in all of the three phases ?).

---

Join/Cut geometry is shape manipulations, not the same as Demolish action.  You would have to model 3 generic models:

- A : the piece as it will be finally cut, phase created = Existing, phase demolished = None

- B : the part that will be cut away, phase created = Existing, phase demolished = New

- C :  the cutting piece, phase created = New, phase demolished = None

- Join A and B.  Do NOT Join or Cut C with either A or B.

Existing view:  you will see A and B joined as one complete, uncut piece

Demolition view: you will see A and B as two pieces, A to remain and B to  be demolished

New view: you will see A and C

- 

[ToanDN]

Attached is a Revit 2022 file to demonstrate the above approach.

[matej.munko]

This option is not usable because you cannot snap dimensions to toposurface, and it would be super time consuming to model it accordingly.

[matej.munko]

I will elaborate:

As barthbradley guessed right i am trying to use this approach for excavations, as we know revit doesn´t treat toposurface as a solid and i was trying to find workaround to do excavations, and be able to properly document it afterwards.

Toposurface as such is useless for this in Revit as it is now.

I was trying to do two types of workarounds here :

1) model terrain as a floor and cut the excavations from it with voids -> problems here are that working with voids is not as easy as with other solid elements, you cannot schedule them, and also that if you model a terrain as a floor revit process it very heavily and the overall performance while working with such a floor is terrible. But with voids the phases work as they are supposed to ...

Sad thing is that if i cut floor with another floor this behaviour does not persist (in fact i cannot cut them, i can only join them which will do the cutting). It only works with voids.

2) i modeled the terrain as a generic model solid object (family), this is much lighter for revit to process and i am able to cut/join other generic models or solid object from it, so i am able to schedule them and so. But the thing is that phasing doesn´t persist which i described upper.

The thing is that i do not need to see "demolished solids" i just need the solids to start cutting in the right phase and not in the phases before. So i need to see the overall terrain in existing phase not cut, and in new construction phase cut. But right now if i cut it in the new phase i see it cut even in the existing phase (which should not occur).

So i hoped if there is a way to do it without the need to model the terrain separatedly for each phase (meaning to have 2-3x more work) it would be nice.