Help with a sloped angle roof

[Anonymous]

I'm currently designing a visitor centre for a university project, the external walls are designed to mirror that of the City's boundaries. As you might or might not make out from the image I have uploaded, some of the walls are set on an angle using curtain wall..

I was wondering if anyone has any advice on how i can get a single roof structure to match the sloping walls and also add a curved overhand, which would be situated towards the back of the image..

Thanks

[Dwight]

Assuming that you actually have a uniform plane at the top of your walls, a roof can be created using the 3D method to pick three points to establish the roof plane. This avoids guessing on the floor plan with the slope vector. If you don't have some sensible geometry at the top, you'll need to reconsider the design or begin to solve how you'll support the beams required to carry the roof loads, providing the folding points for several roof planes.

I'd create the curved overhang using a complex profile with a beam [that can be sloped to match roof slope angles] and SEO the curve away from the roof.

In reality, you'd probably make some kind of decorative soffit bulkhead around the outer perimeter of the structure with a hidden utilitarian membrane as the actual roof.

[Anonymous]

Thanks Dwight.
Thankfully at this stage i only need to provide a visual of the roof, the structure and load bearing capacities are not in question for this assignment.
I used the morph tool to create a roof slab, and using the nodes I have positioned them in relation to the external walls.
The only issue I'm having is that the morph tool leaves it looking very basic, and I don't know how to add other material skins and add-ons such as skylights..
As much as I don't like to admit it, my approach to ArchiCAD is rather barbaric, and it's likely i'm making things far more difficult for myself.

[Dwight]

I agree that you have taken a barbaric approach, but at least you also seem to be quite thorough about doing it. Whether you acknowledge it or not, the assignment is always to solve the building. Your instructors take delight in students who engage the problem.

Taking two minutes placing beams, however arbitrary or uncalculated, quickly creates clues to solve the roof shape using roof planes, easily place skylights in those roof planes and use composite structures [available in roofs but not morphs] to place material skins.

The Morph tool is the go-to method for users who don't really want to understand what's inside structures and doesn't lead to good building solutions.

So, yes, you did make it harder for yourself by denying your project the simplest of Archicad’s conceptual tools.