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Generate shadows without trees: vegetable awnings, a new way to generate shadows in the city.
(www.singulargreen.com)
Technology for a Solar-Punk future.
Airships and hydroponic farms...
Okay, fair enough, sorry I was a bit short with you. Steel cable is astonishingly strong and as long as it's correctly engineered it won't be an issue. Wind loading is going to be included in the calculations for just about any structure, especially this, but whether wind could like... toss the dirt off of them I don't know. I thought that's what you were asking.