The vertical garden for a less gray metropolis
In cities where space for green is shrinking the vertical garden can serve not only to bring a touch of color, but also shade and oxygen. The idea of the "green wall" is due to Patrick Blanc, a French botanist and lover of tropical plants, made famous in 2006 by the construction, together with the architect Jean Nouvel, the vertical garden on the facade of the Musée du Quai Branly Museum primitive non-Western arts in Paris, near the Eiffel Tower. In Italy, the vertical garden made on the front of the shopping center Fiordaliso Rozzano, near Milan, entered the Guinness Book of Records as the largest in the world: its area of 1262.85 square meters houses 44,000 plants of more than 200 species along a height of eight meters. The plants are governed by small metal boxes easy to maintain, while the wall is irrigated by a system that reaches every box and is fed by rainwater collected underground tanks.
As built, in general, a vertical garden? Usually it is a space composed of one or more internal and external walls enriched with plants wall chosen on the basis of the climate and that do not have excessive demands of cultivation. The plants usually used in vertical gardens are evergreen grasses, ferns, ivy, vines and ground cover species of small size whose survival is guaranteed by appropriate irrigation systems, aeration and drainage. A vertical garden plants can weigh on average 50 kg per square meter, so everything must be designed and built by experts. The vertical garden is "green" even in terms of "sustainability": reduces energy consumption of the building as it prevents overheating of the walls, lowering summer temperatures inside up to 15 degrees, also absorb particulate pollutants from the exhaust gases cars and oxygenates the surrounding space. In short, the cost of a vertical garden is, over time, more than offset by the savings on your energy bill.
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