Complex flat roof by slope (not sub-elements)

[Anonymous]

Hello, 

I want to model a complex flat roof with multiple slopes (1.png). The roof consists of a flat slab and the slope is to be achieved in the insulation layer - because of that I need to model it using the sub-elements menu - or at least I don't know of any other way. I tried to do it like in this video: https://youtu.be/vsfhgwbIXX0?t=497, but it's not working for me because of the higher complexity of my roof.

The problem is, I know the slopes, but not the heights of the edges - and I need the latter when using the sub-elements method. Because of that, my model turns out terribly triangulated (2.png), when it's supposed to be much simpler. Each of the green points would have a different height that I cannot specify. 

My question is - is there a way to model a flat roof with a varying thickness insulation, by defining the slope and not the height of all the edges?

Thank you in advance for taking your time.

[barthbradley]

Find the point elevations the "old school" way...draw and dimension the Roof in Elevation Views using 2D linework/Ref. Planes.  

[ToanDN]

Share the roof you have.

[Anonymous]

I've deleted the roof shortly after writing the post, because it was quite useless. But I'm attaching a file with a sketch of the roof and a small part modelled (only a slice of the roof that has the same slope value and direction - I could do the rest like that, but it would be tedious).

[Anonymous]

I was thinking about this, but it would take hours to do and I think all the triangle lines would still be there.

[barthbradley]

So, it's the triangulation you are trying to solve for?  Yeah, I can see why it triangulated so much from your screenshot.  Maybe adding Split Lines can smooth out a little. Have you tried that?  

[ToanDN]

If you only want to hide the lines, then turn off Roofs > interior Lines.

[Anonymous]

Basically yes, I want to solve the triangulation. But I can't just turn off the lines because they break the actual geometry. If you look at the 2.png screenshot, I want my roof to be just the green and blue lines, without the black ones. But if I choose to simply not display them, the sections and 3D will still be wrong.

The blue lines are the Split Lines (and in the actual roof they are valleys? I think that's the word for it) - and I don't know  what other split lines I should add.

[ToanDN · Accepted solution]

See attached for a couple of possible approaches.

[barthbradley]

Break the job up into 4 separate roofs and manually align ridges.

 

[Anonymous]

Thank you! The one on the right is exactly what I wanted to do, but it's also great that you included the second one, because I didn't know it was possible to do somethig like that.