Export Revit Family to CAD BLock

Export Revit Family to CAD BLock

GHASEM_ARIYANI
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Message 1 of 15

Export Revit Family to CAD BLock

GHASEM_ARIYANI
Advisor
Advisor

 

When exporting the components and any family of each revit floor to Autocad Separate blocks are formed.

AutoCAD file size rises.

How can just one block of any type Exported.

 

 

https://knowledge.autodesk.com/community/screencast/6ce80738-02e4-4681-b236-e1481c33ca70

GHASEM ARIYANI
BIM/VDC Manager
Revit Architecture Certified Professional
Revit Structure Certified Professional
Revit Mechanical Certified Professional
Revit Electrical Certified Professional
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Message 2 of 15

Sahay_R
Mentor
Mentor

Do you mean separate blocks or External References? You can uncheck the External References box.

 

Capture.PNG


Rina Sahay
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Message 3 of 15

GHASEM_ARIYANI
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Hello

Thank you for your reply

But this method does not solve the problem

GHASEM ARIYANI
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Revit Mechanical Certified Professional
Revit Electrical Certified Professional
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Message 4 of 15

kadmonkee
Advisor
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each instance of the family (regardless of types) has its own ID number.

"door" has 12 types in Revit the model has 45 instances in the model it will create 45 blocks

Autocad does not breakdown this information, it simply creates another block.

now depending on how complex the family is will certainly create large file sizes when exported to AutoCAD.






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Message 5 of 15

GHASEM_ARIYANI
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Hello @kadmonkee

Thank you for your reply

GHASEM ARIYANI
BIM/VDC Manager
Revit Architecture Certified Professional
Revit Structure Certified Professional
Revit Mechanical Certified Professional
Revit Electrical Certified Professional
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Message 6 of 15

RobDraw
Mentor
Mentor

Revit does this because each instance of a particular family type can have different properties.

 

You can replace the blocks in AutoCAD for cleaning up the files.


Rob

Drafting is a breeze and Revit doesn't always work the way you think it should.
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Message 7 of 15

krozturk
Contributor
Contributor

so,did you find any solution for it:)

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Message 8 of 15

RobDraw
Mentor
Mentor

It's not something that can be solved at the user level.


Rob

Drafting is a breeze and Revit doesn't always work the way you think it should.
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Message 9 of 15

Sahay_R
Mentor
Mentor

This would need an additional step - to go back to the example of 45 instances of doors - look at the doors, designate a block / blocks, and replace the others with it, then run a PURGE to delete the duplicates. Running OVERKILL after this step would also be helpful. 


Rina Sahay
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Revit Architecture Certified Professional

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Message 10 of 15

krozturk
Contributor
Contributor

Thanks for reply:)

Problem is replacing blocks in autocad by using replace command for every single block...

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Message 11 of 15

PaulineP54QC
Enthusiast
Enthusiast

Hello, When I export my fire alarm Revit model to CAD file all the "devices" are exploded instead of blocks. What can I do to avoid that? I need the devices NOT to be exploded. Any suggestion? thoughts? Thanks in advanced! 

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Message 12 of 15

RSomppi
Mentor
Mentor

I don't see any option to make this happen. Can you share an example file that this happens with?

 

BTW, this thread is asking about something else. You should start your own thread.

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Message 13 of 15

r_kuijf
Contributor
Contributor

Hi @PaulineP54QC ,

Maybe a bit late but perhaps still helpful for you or future readers...

We as electrical draughtsman and engineers use symbols. In Revit these symbols are Generic Annotations which are added as a nested family and only have a visibility in a Plan View. When exported to CAD, Revit creates blocks from the geometry, but Generic Annotations  are exported as separate lines. So that's probably your issue.

Symbolic lines which are added directly to the family are exported into the block as well. But since symbolic lines don't react to scale changes like Generic Annotations do, these lines IMHO aren't a solution.

Message 14 of 15

PaulineP54QC
Enthusiast
Enthusiast
r_kuijf - I appreciate your response. Thanks!

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Message 15 of 15

apasterLV83K
Explorer
Explorer
Here's literature I used to solve this inconvenience by using a LISP "BRE".

https://www.cadtutor.net/forum/topic/21571-replace-selected-block-or-blocks-with-another-block/
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