Buildings so that they know what they are buying/renting. But it is not enough that there are energy certifications by law. Both in existing buildings and new construction, formulas that correct energy deficiencies must be put into practice as soon as possible. Keys to make a "cyclical building" effective inesem business school master in architecture and sustainability + 5 ects credits more information some essential points of sustainable architecture that we can highlight are: achieve maximum performance of resources with the least environmental impact : we
must take into account the climatic and hydrographic conditions of the environment in question. We must make use of construction materials in a controlled and sustainable way. They must also be recyclable or non-polluting. Consume renewable energies : we must do without fossil fuels as much as possible, they are simply not sustainable. Apply an efficient work e commerce photo editing methodology in construction projects , as well as manage assets throughout the building's life cycle. This will guarantee the hygrothermal comfort and the healthiness of the building. Make the most of natural light and make use of technology in order to carry out correct energy management and ensure comfort and safety at home. Waste in spain: state and recent treatments spain generates around 33 million tons
of construction and demolition waste (c&d) per year, of which 60% ends up in municipal landfills. This negative trend means that spain occupies the last positions in terms of waste treatment within the european union. The recycling of cdw in recent years ranges between 25% and 30% of the total amount produced in the country. Very low figure considering that spain is one of the largest generators of construction and demolition waste. The spanish federation of construction and demolition waste prepared a report on the production of cdw in the