GLOBAL WARMING

The global warming is a term used to refer to the phenomenon of the increase of the average global temperature, of the terrestrial atmosphere and of the oceans,


The construction is one of the activities with major capacity of pollution. Many emission of carbon dioxide comes from this sector. Some European countries already are intervening in order that the environmental impact is the least harmful posibleLos studies indicate that 20 % of the world population is responsible for 75 % of the pollution. The Conference of Rio, in the year 1992, echoed the need of a global vision of the polluting phenomena and the responsibility of all the countries in them. In this respect, it thinks that every square meter of housing is responsible for an average of emission of 1,9 tons of carbon dioxide during his useful life. They increase the residues tóxicos. - On the other hand, the current construction consumes an important quantity of natural resources. The buildings use 60 % of the materials that are extracted from the planet. In addition, many of the materials of construction that they use need for his transformation high energy consumptions and natural resources: cooked ceramics, steel, aluminium, etc. On the other hand, to the high volume of residues it is necessary to add the potential toxicity and little control that exists of his spillage.