Comparing design changes between two Revit models

[Anonymous]

Hello Everyone,

I searched the forum and found only one related post three years ago. I was curious if anybody has new ideas about how to tackle my issue.

My team needs to produce drawings that highlight changes between two design phases of a large scale housing project. We did not use phasing in the project, so the previous version of our design is in a separate, archived model.

Our deliverable must consist of a set of plans that shows the following:

-Unchanged elements in grey

-Adjusted elements in yellow

-New elements in red

Can anyone think of a way to do this? I have researched the Navisworks comparison tool, but it does not seem intended to produce such documents. Is anyone aware of any Revit extensions or maybe Dynamo scripts that could solve the issue?

We are in Revit 2020 and do not have BIM360 access.

Thanks everyone for your input! Take care.

[XXalessio.amodioXX]

I do not think is possible. This is BIM 360 Design work.

You can try to use this valuable plug in to meet your requirements 

https://apps.autodesk.com/RVT/en/Detail/Index?id=5056644120649615847&appLang=en&os=Win64

[barthbradley]

So these two projects/models are separate and complete?  

[Anonymous]

I think that your options are:

• Override the elements manually. 
• Create phases in your new project and place all the elemtns into the correct phase.  The use the phasing tools.  

[Anonymous]

It is two models of the same project.

Model 1 (from archive) > Project at the end of DD

Model 2 (active model)> Project during CDs

[RobDraw]

Have you searched the internet?

Have you looked at Bluebeam?

[L.Maas]

Depends on size and shape of your project and what you mean by unchanged, adjusted, new elements. Are you talking about location, or also about parameters values? 

If you are bound to Revit alone, where other software is no option  

As this seems to be a one time process I would consider to reintroduce phasing to your project. You could do this by

using the phasing tools or just by adding a shared/project parameter that you can use for filtering.

Set everything to the unchanged setting/phase. Link the older file and everywhere you see changes you can set it to one of the other phase (adjusted or new).

Depending on the size of the project you could do (partial) automation by using Dynamo. For example items with an Revit ID not present in the older files is new.  Items that do not have same location are adjusted.

[chughes]

Have you taken a look at Metamorphosis?

http://revitaddons.blogspot.com/2017/01/metamorphosis-free-and-open-source.html

[justin.joshua9SCKS]

I would export them both to IFC, then do an IFC Compare (this is only for comparing model elements and properties, not Revit sheets or views). There should be free software available to do IFC Compare  (maybe - "https://support.briefbuilder.com/knowledge-base/ifc-comparison-table/" ).That would then give you an overview of what is new or changed. Then export the ids of the new or changed elements. Then select all those elements using their ids (comma separated), with the select by id function, and isolate them to be set to the phase you want. (I have not tested this yet)