# Dynamo for Civil 3D - get all used and not in use assemblies in dwg file

**URL:** <https://forum.dynamobim.com/t/dynamo-for-civil-3d-get-all-used-and-not-in-use-assemblies-in-dwg-file/48160>\
**Category:** Civil 3D\
**Created:** [March 17, 2020, 2:28pm UTC](https://forum.dynamobim.com/t/dynamo-for-civil-3d-get-all-used-and-not-in-use-assemblies-in-dwg-file/48160 "2020-03-17T14:28:02Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![Drbohlav](https://sea2.discourse-cdn.com/flex022/user_avatar/forum.dynamobim.com/drbohlav/32/113004_2.png) [@Drbohlav](https://forum.dynamobim.com/u/Drbohlav)\
**Post date:** [March 17, 2020, 2:28pm UTC](https://forum.dynamobim.com/t/dynamo-for-civil-3d-get-all-used-and-not-in-use-assemblies-in-dwg-file/48160/1 "2020-03-17T14:28:02Z")

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Hello all,  
could you please help me how to get all used assemblies on corridors in DWG file and how to delete all assemblies which are not in use?  
Thank you  
Lukas

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<div class="post-metadata">

**Author:** ![Drbohlav](https://sea2.discourse-cdn.com/flex022/user_avatar/forum.dynamobim.com/drbohlav/32/113004_2.png) [@Drbohlav](https://forum.dynamobim.com/u/Drbohlav)\
**Post date:** [June 21, 2023, 6:38am UTC](https://forum.dynamobim.com/t/dynamo-for-civil-3d-get-all-used-and-not-in-use-assemblies-in-dwg-file/48160/2 "2023-06-21T06:38:36Z")

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Civil3DToolkit package is solution:

 ![image](https://us1.discourse-cdn.com/flex022/uploads/dynamobim/original/3X/2/3/2321eb8fd21d148ec3167cb81a532efd3b2e1a7a.jpeg)