Bottom Sloped Floor

[giorgiodeleoVCB8U]

Hi, I'm having trouble modeling a raised floor that slopes on the bottom side. Can you recommend a solution?

Thanks so much,
Giorgio

[vitorbortoncello]

edit the floor boundary and draw the slope using the slope arrow, then you can specify the height difference or slope percentage

https://help.autodesk.com/view/RVT/2025/ENU/?guid=GUID-C1C203F9-DAF9-450B-BEB1-DE8CC40BA101

[barthbradley]

Join Geometry will remove volume at the union.  So, join the Floor with the solid geometry below it. 

[giorgiodeleoVCB8U]

Thanks for your suggestion, but I need to maintain my top face planar because this is a raised floor that is placed on a sloped structural slab.

So i think that raising the bottom portion while keeping the top level horizontal would be the best option for me.

[giorgiodeleoVCB8U]

Is it feasible for me to copy and hide the floor that is part of the structural model after the union? 

[barthbradley · Accepted solution]

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@giorgiodeleoVCB8U wrote:

Is it feasible for me to copy and hide the floor that is part of the structural model after the union? 

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There should be nothing to hide. 

Like I said, Join Geometry REMOVES volume at union. 

[barthbradley]

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@giorgiodeleoVCB8U wrote:

Is it feasible for me to copy and hide the floor that is part of the structural model after the union? 

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Actually, I don't think I understand you.  Can you elaborate on what you mean?  

[ToanDN · Accepted solution]

Two approaches:

1. Model a thick floor and use a sloped void to shave off the bottom.

2. Model one flat top floor and one sloped bottom floor then join geometry.

[giorgiodeleoVCB8U]

I duplicated the underlying floor from the structural link, joined it with mine, and moved it to a closed workset.
This workflow also cuts my substrates, but since we use a thicker dashed line on the sheets, I don't mind losing some minor substrates (like membranes).

Also, I need to export my model to IFC, but I usually export only 3D elements that are visible within a specific view, so I think that should be fine too.