Hosting a floor with variable thicknesses

[joseph_greavesVPG25]

I'm modelling surfaces in a courtyard that is being built on an existing concrete garage roof.

My problem:

I have two floors on top of each other.

Floor A (planting) is on top and Floor B (garage) is directly underneath.

Floor B (garage) is slightly sloped. I want the floor on top, Floor A (planting), to follow this slope and be directly on top of the garage.

Issue:

The planting has two layers.

1. ⁠a top layer of soil that varies. This I have set as variable.

2. ⁠a bottom layer of substrate that should always be 150mm AND follow the garages slope.

How can I do this? I have Naviate landscape if that helps!

Summary:

A section of what I want would look like this :

FLOOR A

Variable layer on top

Constant thickness layer underneath that is almost hosted / follows the exact slope of the floor underneath.

I have tried to join floors, and that works, but only if you want a variable BOTTOM layer. I want to have a variable TOP layer and a constant bottom layer that follows the floor underneaths slope.

Help! Thanks!

[CGBenner]

@joseph_greav 

Hello, and welcome to the forum!  Would it be possible to share some images of what you have started to go a long with you detailed description, as long as it is ok to share?  This might help the experts here come up with some ideas for you.  Good luck!

[arq_42]

Something like that?

try converting the bottom layer of floor A (Substrate) in top layer of Floor B.
That way, Substrate will follow the slope of the concrete layer, and grass/soil will maintain horizontal.

It is not even necessary to make the grass variable, just the thickness necessary to cover the entire gap.

[RDAOU]

Like this? 

Those are 2 Floors with modified sub elements  (can also be a floor + a toposolid) + Join Geometry

[joseph_greavesVPG25]

Almost! I want that brown bottom layer to be sloped as well. I want it to follow the slope of another floor I have underneath. See my picture. 

[joseph_greavesVPG25]

Here is a picture!

[joseph_greavesVPG25]

Yes, nearly, but I want that green layer to be variable and sloped as well. Is it possible?

[RDAOU]

Option A: Like this - Two slabs each of two layers. Bottom Layer set to Variable. then Use sub elements to create slope in the bottom slab and whatever variable point on the top slab then join geometry

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Option B: or is the bottom most layer also sloped top and bottom (same as above but instead of modifying sub elements on the bottom slab use a slop arrow

Otherwise can you please sketch the layers even by hand? 

[arq_42]

Sure!

[arq_42]

What i've done is separate substrate from soil.
Substrate will be the top layer of concrete floor, without variable thickness.
Soil (grass) will be a variable thickess only layer floor.

Later, only join geometry and that is

[joseph_greavesVPG25]

@arq_42

This is almost it! But the garage (the bottom surface that I want to model on top off) has different slopes. It's not just one sloped surface. How can I do this?

[CGBenner]

@joseph_greav 

Hello, do you still need help with this question?

[joseph_greavesVPG25]

I didn't really get the answer I was looking for unfortunately. I've checked around and I really don't think revit can do this.