Think of it as a skyscraper laid on its side, curved into a dome with large holes in it. There is a lot of living and working room implied, depending upon the thickness of the dome itself, and its diameter.
This proposed arched building is a unique solution to the question of how to create density without dominating a skyline or swallowing green space. Proposed for the city of Rennes, France, the gargantuan inhabited dome placed second in this year’s eVolo skyscraper competition. Designed by Yoann Mescam, Paul-Eric Schirr-Bonnans, and Xavier Schirr-Bonnans, Flat Tower envelops a vast green space, has the ability to collect sun and rainwater and is also a sustainable solution to developing appropriately large scale developments. _Inhabitat
It is easy to imagine a seastead dome of this type, arching over a floating base of sufficient buoyancy. The lower, semi-submerged portion may be a mirror-image inverted dome, or another shape more conducive to cross-water directional travel.
The most important consideration is often to nudge oneself out of conventional, rutted ways of thinking, into a workspace for envisioning novel structures, mechanisms, and devices.
Taken from an article in Al Fin Potpourri