# Walls by Curves, Level & Height NOT Appearing within Revit **URL:** \ **Category:** Revit\ **Tags:** dynamo\ **Created:** [July 9, 2018, 8:55am UTC](https://forum.dynamobim.com/t/walls-by-curves-level-height-not-appearing-within-revit/23522 "2018-07-09T08:55:53Z")\ **Posts on this page:** 11\ **Page:** 1
**Author:** ![Gcf\_Design](https://avatars.discourse-cdn.com/v4/letter/g/77aa72/32.png) [@Gcf\_Design](https://forum.dynamobim.com/u/Gcf_Design)\ **Post date:** [July 9, 2018, 8:55am UTC](https://forum.dynamobim.com/t/walls-by-curves-level-height-not-appearing-within-revit/23522/1 "2018-07-09T08:55:53Z")
Any thoughts on why curves from a CAD file for walls are not being displayed within Revit, yet appear to have been processed correctly within Dynamo? ![image](https://us1.discourse-cdn.com/flex022/uploads/dynamobim/original/3X/1/9/195297c25f7f1dd9211b9eee0cc0f9374d106b16.png) ---
**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:** [July 9, 2018, 9:13am UTC](https://forum.dynamobim.com/t/walls-by-curves-level-height-not-appearing-within-revit/23522/2 "2018-07-09T09:13:53Z")
Make sure background preview is checked. ![779f906a7ee66d374166db416b15918c72a16d64_1_690x212](https://us1.discourse-cdn.com/flex022/uploads/dynamobim/original/3X/9/5/95f6e71c74e37b6b626960f9c4bd2f3d32de8226.png) ---
**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:** [July 9, 2018, 9:28am UTC](https://forum.dynamobim.com/t/walls-by-curves-level-height-not-appearing-within-revit/23522/3 "2018-07-09T09:28:32Z")
…also, it might be caused by a units issue; what are the length of your curves you’re using to create the walls? If they are too short, the walls wont be created ---
**Author:** ![Gcf\_Design](https://avatars.discourse-cdn.com/v4/letter/g/77aa72/32.png) [@Gcf\_Design](https://forum.dynamobim.com/u/Gcf_Design)\ **Post date:** [July 9, 2018, 9:38am UTC](https://forum.dynamobim.com/t/walls-by-curves-level-height-not-appearing-within-revit/23522/4 "2018-07-09T09:38:44Z")
I shall look into this. ---
**Author:** ![Gcf\_Design](https://avatars.discourse-cdn.com/v4/letter/g/77aa72/32.png) [@Gcf\_Design](https://forum.dynamobim.com/u/Gcf_Design)\ **Post date:** [July 9, 2018, 9:45am UTC](https://forum.dynamobim.com/t/walls-by-curves-level-height-not-appearing-within-revit/23522/5 "2018-07-09T09:45:58Z")
Curve length appear fine. ![image](https://us1.discourse-cdn.com/flex022/uploads/dynamobim/original/3X/5/a/5a371cb72add69e457c21e575dfaf608e1347de4.png) ---
**Author:** ![Gcf\_Design](https://avatars.discourse-cdn.com/v4/letter/g/77aa72/32.png) [@Gcf\_Design](https://forum.dynamobim.com/u/Gcf_Design)\ **Post date:** [July 9, 2018, 9:46am UTC](https://forum.dynamobim.com/t/walls-by-curves-level-height-not-appearing-within-revit/23522/6 "2018-07-09T09:46:38Z")
Revit Background Preview was not activated, however, wall are still not appearing??? ---
**Author:** ![Gcf\_Design](https://avatars.discourse-cdn.com/v4/letter/g/77aa72/32.png) [@Gcf\_Design](https://forum.dynamobim.com/u/Gcf_Design)\ **Post date:** [July 9, 2018, 9:53am UTC](https://forum.dynamobim.com/t/walls-by-curves-level-height-not-appearing-within-revit/23522/7 "2018-07-09T09:53:15Z")
Visibility of walls from script were not possible, due to the ‘Discipline’ within Revit being Structural, rather than Architectural or Coordination. How can the walls being created be made to be of a Structural discipline? ---
**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:** [July 9, 2018, 9:59am UTC](https://forum.dynamobim.com/t/walls-by-curves-level-height-not-appearing-within-revit/23522/8 "2018-07-09T09:59:15Z")
> [@Gcf\_Design](#): > > How can the walls being created be made to be of a Structural discipline? @Gcf_Design feed structural wall type to wall type input. ---
**Author:** ![Gcf\_Design](https://avatars.discourse-cdn.com/v4/letter/g/77aa72/32.png) [@Gcf\_Design](https://forum.dynamobim.com/u/Gcf_Design)\ **Post date:** [July 9, 2018, 10:08am UTC](https://forum.dynamobim.com/t/walls-by-curves-level-height-not-appearing-within-revit/23522/9 "2018-07-09T10:08:06Z")
![image](https://us1.discourse-cdn.com/flex022/uploads/dynamobim/original/3X/4/a/4afdc0a9ee0f654deee1688e0a197781bb8cf43f.png) ---
**Author:** ![Ewan\_Opie](https://sea2.discourse-cdn.com/flex022/user_avatar/forum.dynamobim.com/ewan_opie/32/77070_2.png) [@Ewan\_Opie](https://forum.dynamobim.com/u/Ewan_Opie)\ **Post date:** [July 9, 2018, 10:20am UTC](https://forum.dynamobim.com/t/walls-by-curves-level-height-not-appearing-within-revit/23522/10 "2018-07-09T10:20:21Z")
Can you confirm the wall type CW 100-90-100p is a Revit Structural wall type? I’m not at the PC but Architectural walls may still have a Structural (yes/no) parameter that you might have extracted. ---
**Author:** ![Gcf\_Design](https://avatars.discourse-cdn.com/v4/letter/g/77aa72/32.png) [@Gcf\_Design](https://forum.dynamobim.com/u/Gcf_Design)\ **Post date:** [July 9, 2018, 10:21am UTC](https://forum.dynamobim.com/t/walls-by-curves-level-height-not-appearing-within-revit/23522/11 "2018-07-09T10:21:45Z")
The walls generated by default by wall centreline. How can the curve (representing the external wall face), perform the function of the modelled wall?