present a beautiful book Gernot Minke on the construction of green roofs. You can download a scanned version, a version for display or for printing.
Due to the concentration or of buildings and to tr TRANSIT vehicular life in our cities has gone insane. Cars and heating n or consume scarce t ox geno today í d ay harmful substances produced in abundance. Huge areas CONCRETE ny asphalt or lead to an overheating atm sfera or urban areas and lead to the dirt and part í particles of harmful substances are deposited on the floor, climb on the heat generated swirl and spreads over the entire city. On summer nights reached in the middle of a big city, air temperatures between 4 and 11 or ° C m to s higher than in the suburbs ( L or tsch 1981). Ú Ins n L or tsch cities have up to 15% fewer hours of direct sunlight and an increased frequency of fog (30 to 100%) according to é little of a ñ o.
Gardens to front and landscaped courtyards, but mostly landscaped roofs and facades, may í definitely an improving climate for polluted cities, the air purifying í to be reduced í considerably an eddy of dust and variations in temperature and moisture percentages decrease an í. To achieve a healthy urban climate probably be í a sufficient covered with garden extensions with between 10 and 20% of all indoor areas of the city, because a roof c grass é unpruned has an average rate of 5 to 10 times more to s surface leaves it to in an open park area (see chap. 3).
can from the base of neighborhoods é c ntricos large cities 1 / 3 of the surface is to built, 1 / 3 corresponds to the streets and squares, in turn paved and is only 1 / 3 of green areas unpaved. If s or what for every five roofs had one of c é grass, the surface of leaves in the city will double í a. 
Green roofs in addition s to influence the improvement climate of the city, also n é optimize aislaci or nt é rmic, storage building heat, and aislaci or n ac ú acoustic. In addition to s are considered long term, m to s econ or monkeys that conventional tires (see chap. 11).
landscaped roofs lead in essence, a construction or ecological n or gium and econ or mica. As is ñ wing continuation or n:
- reduce paved surfaces,
- produce ox í oxygen and absorb C0 2 , filtered part í dust and dirt particles air and absorb part í harmful particles,
- prevent overheating of the roof and thereby decrease the dust devils,
- reduce temperature variations cycle d í a - night and
- decrease moisture variations in the air.
Adem to s:
- have a long life ú useful if its execution is correct or
- t take effect as insulation é rmico,
- protect the intense summer sun to rooms located under the roof,
- educate the passage of sound from outside, count as non-combustible and
- absorb rain so that relieve sewer system.
And ú last but not least important:
- wild herbs create a green roof pleasant scents,
- provide accommodation for insects and beetles,
- are est é ticos and may influence the good to minimum and the strife or n people.
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