after I read your answer 2 or 3 times, I think I get it.

The final arches are not equal as the side ones, right?

and the shape of the dome, should indicate the curvature of that final archs!
But, I think I get miss something.

Try to think with me... If I draw edges true the elliptical dome shape, how it gone be the most upper edge that connect the arch edges? (I think I need to have some principal middle perpendicular edge, for I can join the left arches? (if you know what I try to explain)

there is not a perfect arch. Is kind of elliptical. As it in vertical section and in plan section.

My most issue is there I need to have the columns in the same equal ellipse segment. So the first problem is, how I can have it just above the elliptical arch.

the second problem is, if I can get the exactly alignment of the columns (to support the inside dome), how can I project perpendicular edges to determine the frame structure (like I show in "2º Issue trouble... correct structure of inside elliptical" sample image upside the post)?

can you show me some examples of how I can build that frames??

I have to build it...

I am gone edit my first post, and put the concept sketch I made for it + the concept ideia were I search for...

I hope you enjoy... and could help me, please.

Hi Dave R.

Thanks for your answer.

1º - I already try it, but I miss how can I build the inside frame structure for support the dome. Try to think like "Gothic Arch" and its timber frames structures.

I need to build some structure for support that shape. And I need to show it in SU model.

if you need I post some images of the project, please ask, so you can see for your self better what I pretend to do.

http://imageshack.com/a/img812/9311/g4z6.png

thanks again.

SO... That some sample images of my last work as an Architecture student, that I need to present for my final thesis.

The main idea is all about a "Synthesis of historical spaces", made with steel frames and concrete.

The project is a Theatre for a Circus Student, from "CHAPITÔ Circus School of Lisbon"

The project are insert in a circular shape plan, and its front sections are elliptical.

The main central "nave" is were are the "performativity shows room". Like the centre of a circus, but in a reinterpretation of an ancient religious spaces.

The left sides, are like the churches "nave" sides... Just imagine a church section plan, and Borromini`s front section San Carlo alle Quattro Fontane, in Italy.

The inside show room, are projected from an elliptical shape. I need to continue the frames for it. And the big problem are when I need to close the frame in last end axis of the ellipse geometry. I don't know how I close the structure at the dome.

I hope you people, help me to find the solution so I can finish this structure inside dome.

I will post more examples of my doubts...

ps: sorry my English... I am a Portuguese.
Thanks for you patience

CAN anyone, please, to teach me how can I build some ELLIPTICAL DOME?

And what kind of plugin do I have to install inside Sketchup 2013?

I am a finish architecture student, who need urgently finish my last project work for University. But, I am stocked at how I build a steel frame structure for an elliptical dome.

Need really help, please, some one.

best regards.

António André
from Portugal

sorry mate.

I am Portuguese. can you tell me were i can find ruby console+ in the preference tab.

I have SU 8pro installed and it is not there.

How can i install cleanup3 plugin?

teach me please.