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The decree of February 14, published in the DOGC two days later, was drafted as a matter of urgency.
The objective is to continue the process of social change initiated by the municipalities in order to design, conceive, build and use buildings from the perspective of environmental sustainability.
The environmental and coefficient parameters will be applied to newly constructed buildings, those that are the result of conversion of an old building, to the results of large rehabilitation works, provided they are a global action throughout the building, including those that only leave the facade
These environmental criteria will be applied in four concepts: water, energy, materials and construction systems and waste, in public buildings, residences, administrative, teaching, health, sports, but also those of private ownership.
Water
Buildings must have a sanitation network that separates the rainwater from the wastewater. The toilets, bidets, sinks and the shower should be designed to save water. The tanks of the toilets must have dual-download and interruptible discharge mechanisms. In buildings for teaching, health or sports use, faucets and showers will have a system that will detect the presence for its operation.
Energy
Constructive solutions of thermal insulation will be adopted. The openings of facades and roofs of living spaces will have double glazing or with sun protection if they are oriented to the southwest. Buildings that have a demand for hot water equal to or greater than 50 liters per day at a reference temperature of 60 degrees (hotels of 5 and 4 stars and hospitals) must have a thermal solar energy production system . Some exceptions are established, for example, that the building does not have enough sunning for external barriers.
Constructive materials
The decree also regulates a minimal isolation for the separating walls between different owners or users and also stipulates some parameters of ecoficiency related to construction materials and systems. It will be necessary to obtain a minimum score of 10 points by using one or several of the constructive solutions proposed by the Generalitat and that affect the garden cover, the ventilated, the openings of the room, to a system of reuse of rainwater , or one of gray water, to the use of renewable energies as well as to a long list of solutions that are valued with several points according to the criterion of the administration.
Waste
In the case of houses, it will be necessary to foresee a space easily accessible to the interior that allows the separation of the following fractions: lightweight containers, organic matter, glass, paper and cardboard, and rejection. It will also have to adapt to the collection fractions set by the municipal ordinances. The different private entities must have, either inside or in a community space, an adequate waste storage system. It will also be necessary to incorporate into the project of the work, a waste management plan for the construction.
