# Room Boundaries - number lines

**URL:** <https://forum.dynamobim.com/t/room-boundaries-number-lines/9034>\
**Category:** Revit\
**Created:** [January 21, 2017, 9:38am UTC](https://forum.dynamobim.com/t/room-boundaries-number-lines/9034 "2017-01-21T09:38:26Z")\
**Posts on this page:** 5\
**Page:** 1

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**Author:** ![alex\_volt](https://avatars.discourse-cdn.com/v4/letter/a/ac8455/32.png) [@alex\_volt](https://forum.dynamobim.com/u/alex_volt)\
**Post date:** [January 21, 2017, 9:38am UTC](https://forum.dynamobim.com/t/room-boundaries-number-lines/9034/1 "2017-01-21T09:38:26Z")

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I read the perimeter of 11 rooms:

no.3 room has 6 sides —\> I find 8 lines ----\> why? —\> How to find the Boundaries lines?  
nr.1 room has four sides —\> I find 6 lines ----\> why? —\> How to find the Boundariesr lines?

I enclose img

 ![](https://us1.discourse-cdn.com/flex022/uploads/dynamobim/original/3X/6/0/60ae6e8942af89377729bad1b4c7cfec687361d6.jpg)

 ![](https://us1.discourse-cdn.com/flex022/uploads/dynamobim/original/3X/d/0/d0e5862f808cd2f0d8ed0c3045af02ba908fae39.jpg)

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**Author:** ![Yna\_Db](https://sea2.discourse-cdn.com/flex022/user_avatar/forum.dynamobim.com/yna_db/32/30641_2.png) [@Yna\_Db](https://forum.dynamobim.com/u/Yna_Db)\
**Post date:** [January 21, 2017, 11:16am UTC](https://forum.dynamobim.com/t/room-boundaries-number-lines/9034/2 "2017-01-21T11:16:03Z")

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You should highlight your edges one by one to check what is going on, like so:  
 ![](https://cdck-file-uploads-us1.s3.dualstack.us-west-2.amazonaws.com/flex022/uploads/dynamobim/original/3X/4/a/4ae37badcc11985717e1e379625b57f95cfafbcf.JPG)

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**Author:** ![Kulkul](https://sea2.discourse-cdn.com/flex022/user_avatar/forum.dynamobim.com/kulkul/32/49801_2.png) [@Kulkul](https://forum.dynamobim.com/u/Kulkul)\
**Post date:** [January 21, 2017, 1:49pm UTC](https://forum.dynamobim.com/t/room-boundaries-number-lines/9034/3 "2017-01-21T13:49:21Z")

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Hi @alex_volt

> [@alex\_volt](#):
>
> no.3 room has 6 sides —\> I find 8 lines ----\> why?

You should upload your rvt file so that we can have closer look at it.

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**Author:** ![Thomas\_Mahon](https://sea2.discourse-cdn.com/flex022/user_avatar/forum.dynamobim.com/thomas_mahon/32/64209_2.png) [@Thomas\_Mahon](https://forum.dynamobim.com/u/Thomas_Mahon)\
**Post date:** [January 21, 2017, 2:37pm UTC](https://forum.dynamobim.com/t/room-boundaries-number-lines/9034/4 "2017-01-21T14:37:16Z")

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You’re getting multiple curves due to the nature of your wall joins and an other wall which touches that space. You should look at this post for a possible solution and also read @Konrad_K_Sobon explanation which is more detailed than mine:

> [@Room.Boundaries - more curves than walls..?](https://forum.dynamobim.com/t/room-boundaries-more-curves-than-walls/1968/9):
>
> This is caused by different Room bounding conditions. For example: [Capture] &nbsp; &nbsp; [Capture] &nbsp; &nbsp; [Capture] &nbsp; &nbsp; &nbsp; You are probably noticing a pattern there. Revit has trouble recognizing a wall by its “short” face. Also, in case there was a small break in-between the walls, rooms will automatically fill in the gap to enclose themselves, but in that case - and understandably - there is no wall associated with that particular edge. Does that make sense? However, what is possible is what …

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**Author:** ![alex\_volt](https://avatars.discourse-cdn.com/v4/letter/a/ac8455/32.png) [@alex\_volt](https://forum.dynamobim.com/u/alex_volt)\
**Post date:** [January 21, 2017, 3:19pm UTC](https://forum.dynamobim.com/t/room-boundaries-number-lines/9034/5 "2017-01-21T15:19:30Z")

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Thanks for collaboration  
I solved this way:  
I transform the rooms in solid -----\> I find the perimeter

 ![](https://us1.discourse-cdn.com/flex022/uploads/dynamobim/original/3X/b/3/b3c313ee3ec849eed162b14049e0bfa03e0fd3aa.jpg)