Domes: Geodesic vs. Hemispherical?

One of the biggest decisions we have to make is whether to go with a Geodesic or Hemispherical style domed roof.  Our roof is also a green roof where we’ll be planting over 2,000 native succulents, so our decision has to bring in drainage, steepness, weight limits, aesthetics and more.  Ultimately, we’d love to see a geodesic dome as it parallels and draws inspiration from the internal structures various diatoms that also rely on geodesic forms.  However, they also create a difficult situation in regard to drainage as rain and regular watering are something to consider with our green roof.  A more traditional Hemispherical style domed roof is another option.  I’ve listed a few links below to some options that I’ve come across in my research:

Traditional Hemispherical Domes:
http://www.copper.org/publications/newsletters/innovations/2005/09/copper_domes_architecture.html
http://en.wikipedia.org/wiki/Dome

Green Roof Inspiration:
http://www.ranacreekdesign.com/projects/california-academy-of-science/

A full-scale “Succulent Globe” that follows the more traditional “Hemispherical” design:http://sgplants.com/articles/entry/at_succulent_gardens_we_bring_you_the_world

A great tool for determining dome measurements:
http://www.monolithic.com/stories/dome-calculator

And a bunch of great Geodesic Dome resources (I kinda like Geodesic Domes if you haven’t already figured that out!)
http://fuckyeahgeodesicdomes.tumblr.com/
http://www.nasa.gov/mission_pages/spitzer/news/spitzer20100722.html
http://membrana.us/beam.html
http://www.oceanfarmtech.com/
http://www.domeincorporated.com/steel-domes-wood-domes.html#Wood
http://www.geodesicframe.com/
http://www-graphics.stanford.edu/~munzner/dome/struts/
http://www.desertdomes.com/dome3calc.html
http://www.byexample.com/projects/current/dome_construction
http://simplydifferently.org/Geodesic_Dome_Notes?page=3

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