# Revit Topography to Solid Mass

**URL:** <https://forum.dynamobim.com/t/revit-topography-to-solid-mass/17050>\
**Category:** Revit\
**Created:** [December 2, 2017, 9:43pm UTC](https://forum.dynamobim.com/t/revit-topography-to-solid-mass/17050 "2017-12-02T21:43:43Z")\
**Posts on this page:** 1\
**Showing post:** 2

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**Author:** ![jacob.small](https://sea2.discourse-cdn.com/flex022/user_avatar/forum.dynamobim.com/jacob.small/32/161030_2.png) [@jacob.small](https://forum.dynamobim.com/u/jacob.small)\
**Post date:** [December 2, 2017, 9:46pm UTC](https://forum.dynamobim.com/t/revit-topography-to-solid-mass/17050/2 "2017-12-02T21:46:58Z")

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This should help you sort out the issue.

> [@Create a solid from a topography](https://forum.dynamobim.com/t/create-a-solid-from-a-topography/6001):
>
> Hi guys¡¡ Im triying to create a solid from a topography…i have used the package of @Vikram_Subbaiah to convert the topography to a polysurface. Then i am triying to create a solid and the cut this solid with the polysurface of the topography with the nodes geometry.trim or geometry.split, but it doesn´t work…how can i get a solid topography?? The problem is not as easy as take the surface curves of the topography and extrude them as solids because as u can see i have a underground level in t…

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