# Place family by surface with voids issue

**URL:** <https://forum.dynamobim.com/t/place-family-by-surface-with-voids-issue/37656>\
**Category:** Geometry\
**Tags:** dynamo\
**Created:** [June 27, 2019, 8:16am UTC](https://forum.dynamobim.com/t/place-family-by-surface-with-voids-issue/37656 "2019-06-27T08:16:52Z")\
**Posts on this page:** 4\
**Page:** 1

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**Author:** ![ino](https://avatars.discourse-cdn.com/v4/letter/i/bbe5ce/32.png) [@ino](https://forum.dynamobim.com/u/ino)\
**Post date:** [June 27, 2019, 8:16am UTC](https://forum.dynamobim.com/t/place-family-by-surface-with-voids-issue/37656/1 "2019-06-27T08:16:52Z")

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Hi there,  
I was learning adaptive family follow sun path issue.  
Then I encounter this problem.

I want to place adaptive family by the surface with some voids.  
Here is dynamo result:

 ![surface](https://us1.discourse-cdn.com/flex022/uploads/dynamobim/original/3X/0/8/087454c1cfe6e9ffa00403afe7361a0e00b63779.jpeg)

Seem the voids are missing after family placement.  
How should I do to remove families on the voids. or make the placement follow surface with voids?  
Thank you.

Here is the related files:  
Dynamo(v2.0.1):  
[place family with surface.dyn](https://forum.dynamobim.com/uploads/short-url/4nriR9kMoH8JleD8y9zHuIU14pb.dyn) (68.1 KB)  
[MinMaxClamp.dyf](https://forum.dynamobim.com/uploads/short-url/pajmTV4cAGPZhzdfa7pGduz7t7G.dyf) (2.7 KB)

 ![place%20family%20with%20surface](https://us1.discourse-cdn.com/flex022/uploads/dynamobim/original/3X/2/9/2920a07639d4c1831312ea9bfb6edbd822712e9c.png)  
Revit(2018):  

> **[place family with surface.rvt](https://drive.google.com/file/d/13bNcE881LQNo_CEW94kd1Zae0kqEn6UF/view?usp=drive_open)**
>
> Google Drive file.

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**Author:** ![ino](https://avatars.discourse-cdn.com/v4/letter/i/bbe5ce/32.png) [@ino](https://forum.dynamobim.com/u/ino)\
**Post date:** [June 28, 2019, 9:03am UTC](https://forum.dynamobim.com/t/place-family-by-surface-with-voids-issue/37656/2 "2019-06-28T09:03:43Z")

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anyone?  
If I explained question unclear, please don’t hesitate to tell me.  
Apologize for my English ability.  
I also found a similar topic but there no solution…

> [@Place adaptive family in curve facade with voids](https://forum.dynamobim.com/t/place-adaptive-family-in-curve-facade-with-voids/24873):
>
> I have created a mass that represents the façade of a building. I have already found the points that intersect the façade but when I place the adaptive family it shows an error. The mass has a void and I think this is creating a problem for placing the families. My objective is to create a randomize façade with my adaptive families.

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**Author:** ![Fiesta](https://sea2.discourse-cdn.com/flex022/user_avatar/forum.dynamobim.com/fiesta/32/31914_2.png) [@Fiesta](https://forum.dynamobim.com/u/Fiesta)\
**Post date:** [June 28, 2019, 11:03am UTC](https://forum.dynamobim.com/t/place-family-by-surface-with-voids-issue/37656/3 "2019-06-28T11:03:45Z")

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Hio,  
i think this is a Revit problem.  
For example: If you place a void in a project environment on a door - the door won’t get cut.  
You place a void on your adaptiv families - they won’t get cut.  
There are only some system families who a cutable, like walls and roofs…

You need to place the void into the family.

or  
First create the area, cut some area out and than place your adaptive family on this surface.

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**Author:** ![ino](https://avatars.discourse-cdn.com/v4/letter/i/bbe5ce/32.png) [@ino](https://forum.dynamobim.com/u/ino)\
**Post date:** [June 29, 2019, 5:35am UTC](https://forum.dynamobim.com/t/place-family-by-surface-with-voids-issue/37656/4 "2019-06-29T05:35:35Z")

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Hi Fiesta,

Thanks for your reply.  
I’ll try your approach to figure out the solution.