Rendering irregular mouldings

[Anonymous]

Shown below are (2) different dormers that I am trying to create in 3D using ArchiCAD. I am having problems figuring out how to go about rendering the moulding on each of the dormers.

A.) Arch Top Dormer - Any suggestions on how to render moulding that is arched across the front of the dormer, then returns back to the roof?

B.) Shed Dormer - Any suggestions on how to render moulding across the front of the dormer, then returns back to roof on an arch?

Any suggestions on how to approach this would be very helpful.

Thank you

[Dwight]

This is a real challenge, but can be done without GDL as long as it doesn't need to be parametric.

It also seems torturous. It is, until you know it, then it is a two minute exercise.

Side mouldings:

Use the trace function to put your side view of the dormer on the floor plan.

Make the moulding section a custom profile.
Then make a Custom Profile wall - curved - as if on its side.

Take a side view in 3D of the moulding as if it was from the top.
Trim to roof taper using an SEO.
Mitre front end with a roof plane SEO

Save 3D view As a GDL object. Place the object

Across the front:

You could use the same section to make a wall and save that in a similar way using slab bits to SEO mitre the ends.

[Dwight]

A general approach to problems like this is to think like a millworker.

Extrusions, miters and saw cuts, performed as if on a chop saw table, then rotated upward to their rightful homes.