No Terrain under room on piers

[Gary-Doski]

So, besides the "hide terrain intersected by building" check box, and making a custom solid, what other ways have users

got the grass to grow under a room?

[DBCooper]

Try this:

Select the terrain perimeter.

Use the "make terrain hole around building" tool.  This takes the auto generated hole and converts it into a manual terrain hole.

Select the hole and reshape as needed.

[CharlesVolz]

Or, place the terrain on Floor 0 so that cantilevered building areas like boxed windows do not cut a hole in the terrain. Only your foundation walls influence the terrain cut out. 

[Gary-Doski]

Thanks, both great ideas!!

[TCB_BdnMY]

On 6/29/2025 at 1:31 PM, CharlesVolz said:

Or, place the terrain on Floor 0 so that cantilevered building areas like boxed windows do not cut a hole in the terrain. Only your foundation walls influence the terrain cut out. 

 

This is how I ended up solving this problem, works great. Keep in mind all your terrain features will have to be on that level as well. 

[Gary-Doski]

Yeah, that's how I get it done, then copy it as a cad line to the 1st floor, but seems like it should figure this out automatically

[SHCanada2]

On 9/5/2025 at 9:19 AM, Gary-Doski said:

Yeah, that's how I get it done, then copy it as a cad line to the 1st floor, but seems like it should figure this out automatically

I use floor 0 as well for this exact reason, If I am lazy I will copy the CAD line to floor 1 for certain terrain features, but I also have a saved plan view that references terrain items (from floor 0) to show on floor 1

 

Edited Saturday at 07:30 PM by SHCanada2

[Michael_Gia]

On 9/5/2025 at 11:19 AM, Gary-Doski said:

Yeah, that's how I get it done, then copy it as a cad line to the 1st floor, but seems like it should figure this out automatically

You're over thinking and working.

 

@DBCooper gave the correct answer.  I would not mess with terrain on floor 0.

[Gary-Doski]

The terrain on floor "0" has worked fine for years, but now they have the terrain hole option which is much better way to go.

Thanks for the info guys!!

[SHCanada2]

6 hours ago, Michael_Gia said:

You're over thinking and working.

 

@DBCooper gave the correct answer.

@DBCooper says it is then manual. I assume then if I change a wall, I need to go do it again?

 

If so, to avoid the rinse repeat over and over again, I'll leave it on floor 0. if it is automatic then yes floor 1 sounds like the better option

 

[DBCooper]

If you use the "make terrain hole" feature, it is then manual and you will have to update it anytime you move walls.  Do whatever you think is easier.  There are times though, like when you have a stepped foundation/floor plan, that moving the terrain down or even up a floor still won't give you what you need.  In these cases, you have to make your own terrain hole.