Conical roof - internal connections

Here is a basic shape for a conical roof that will be placed on a round watchtower. Two main features that I wanted to have:

 

1) smooth all around - without any panels overlaying the roof,

2) as rigid as possible - every angled section of a roof is connected using hypo-technique.

 

The shape is very versatile and can easily be used elsewhere. Just remove the brown beams that mimic roof's rafters and it can be used as a space ship etc.

Done