Terrain Help - Underground Parkade Entrance

[WhistlerBuilder]

Hello helpful designers,

I was wondering if anyone had a clean way to deal with terrain grading for an underground parkade entrance?

I have tried a variety of configurations over the years and it always ends up being a super messy process with lots of terrain points and breaks while still creating lots of visual glitches. The terrain always wants to slide up in front of the garage door, and the breaks on retaining walls always bleed through.

 

I am looking for a way to extend the "terrain intersected by building" break to include a descending driveway "room", and then cheat the driveway with a 3d solid set at the desired grade. But I cannot figure out how to get it to apply properly. I am open to suggestions if someone else has a cleaner solution.

Image and sample plan attached.

Thank you in advance to anyone who might have a solution to this.
Cheers,

Parkade Entrance.plan

[DBCooper]

Select your terrain perimeter.

Use the "make terrain hole around building" tool.

Edit shape as needed.

 

[WhistlerBuilder]

15 minutes ago, DBCooper said:

Select your terrain perimeter.

Use the "make terrain hole around building" tool.

Edit shape as needed.

 

So easy... now I feel silly.
I did not even know there was a tool to edit that.

Cheers,