Berlin is becoming a "Sponge City" designed to tackle two issues - heat and flooding - by imitating nature.
Video by Gloria Kurnik
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How deep is this swale reserve need to be? Do they need special kind of concrete? Do we need to water the green on dry season? Will they, in the face of the costs, still turn out economical? Numbers! I want to know the numbers!
How does this method of drainage compare to traditional drainage standards? Can it hold up to heavy rainfall or flash floods? Is there a problem created with these rooftop beds of plantation like pests or quicker corrosion of the building? It's a very cool idea but I wish they had more information about the logistical aspects of this type of city design.
I've said for AGES that roads should be porous (a fine grid of material to drive on?), if people make patios in their garden these should have gaps to let rainwater through - nowhere should be concreted over completely except where absolutely necessary - it's common sense! In the old days the rain water went into water butts - but hardly ever now = why? Confused! Near me there's a road that dips down to go under a bridge and when we have very heavy rain it's submerged - not rocket science to fix it... And we should be putting our vegetable waste back onto our land = compost, this must be as easy as possible for people to do = then they'll DO it, if no land (why not?) e.g. no garden then wormeries and street/local compost areas & help (person there = jobs) to do it right?
It's so silly to have sponging water as a reason to do this, how about the happiness of the people? The effect that this would have on the resident's happiness massively outweighs any other positive reason. Heat doesn't really matter, I mean who cares if it's that hot, you're in Berlin - I'm sure it feels a lot better than living in Florida / Middle East no matter how bad your heat island is, and people live there just fine. Parks are secluded, nothing beats having plants integrated into the environment. I think it's a great idea, but I think it's done for the wrong reason.
Wouldn't it help prevent floods? A lot of floods occur because the water has nowhere to go, because there's just concrete anywhere. In sponge cities there's soil and plants everywhere that can absorb that water.
What is told in this video only applies to a ridiculous small portion of the city. Most buildings have to deal with extremely poor sound and thermic isolation and damp walls and cellars (you can not imagine the level of humidity in common Berlin buildings and in many of the new high-tech ones, which are constantly in need of repair). This "solution" is only available for new buildings that only the 1% can afford. The rest is true, Berlin is very green, mostly the neglected parts, because this part of Europe is green, not because of some genius urban planing strategy.
Can anyone tell me how things work?
Do we actually destroy parts of the planets and when disaster happens it is the only time we think about what we have done and try to fix it? Or do we study the advantage and disadvantage and then forget the disadvantage part and build things? Or do we actually don't care at all what will happen and let next generations figure out if there is any problem? what exactly are we doing? I mean I learn differently at school, turns out the adults doing differently in real life.
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