Approximately one year, some students interested in sustainable architecture are going to dedicate the batxillerat research team to this subject, and searching on the internet will go to the our projecte d’habitatges ecològiques en filera . They will contact both of us interested in giving us an interview, which we will share. In bold, ask them by Edgar Marín, Edwin Toaquiza and Víctor Bea, followed by the answers of Sergio Sanz, architect of KAITEK ARQUITECTURA and postgrau en Sostenibilitat.

First of all, it would be nice for you to explain briefly what the project of ecological cases in Mollet del Vallès consists of.

The project of the ecological cases in filera adapts a communal architectural typology to solutions that minimize the environmental impact and reduce the consumption of energy and water. Conventional construction has a high impact: when it was constructed in the same way, it was primarily based on minerals from the lithosphere and is consumed by molta aigua, so that it produces a drain of natural resources. The project reduces the environmental impact in the following way: it is fundamentally built with panels against whip laminates, which is a renewable material that comes from the biosphere. As it is a construction in sec mitjançant unions cargolades or acoblades, practically does not consume water. In addition, this type of construction is removable, so that if one day it is difficult to build something else in this area, it is possible to reuse or recycle the materials. Fins i tot la fonamentació, which is realization mitjançant a type of pilotage d’acer cargolat al terreny.

Is it going to be done in the end? If it is not going to be carried out, who will be the motiu pel which is not going to be done?

It is not going to realize. It is simply a tractave of a projectual assault per veure fins to whom point would it be possible to build an ecological habitat of contemporary aspect that could fit into a habitual typology of housing.

Do these cases have any kind of appearance to generate your own energy?

The porxos d’aquests habitatges is projected with a pergoles of buit tubs that contribute to the climatization through the radiant sun and the water heating sanitària. A month, it is recullen the rainwater for the seva utilització as the water of reg. Likewise, in a project, they had to think about using efficient machines and have to look for architectural solutions. Energy is a factor to be taken into account in the projectual process because it is a consumer. This consumption will depend on the demand that the building has, that it is possible to prevent the mitigation of energy simulation calculations. Així, the orientation of the house, the measure and the owners of the finestres and the solar protectors or the group of the aïllaments, which are determinants in the demand, can be defined according to scientific criteria. These cases are projected to minimize energy demand. A standard habitat built during the 90’s would be consuming a prop of 120 kwh / m2 • any, while the sustainable habitats of the project are calculated because it consumes only 15 kWh / m2 • any in the installation considered. The performance of the systems or the self-generation was not so important in the project to attack this reduction in demand.

Cases ecològiques

Axonometry of the architecture of the habitatges ecològics.

Which materials will be the most used for the construction of the habitats or do they intend to be the most used?

In the projecte s’utilitza fonamentalment fusta. Fins i tot per als aïllaments tèrmics, which are derivatives of crushed whip. The idea was that it be a renewable material that allows it to be reused or recycled.

Is it possible for me to be calm?

I would pose the question to l’inrevés. Is it peace of mind? These habitats, which are extraordinarily efficient, are not perfect and are not projected to be disconnected from the general energy supplies. Poaching a house with renewable energies is easy to warm the sun or use a biomass boiler, but to be disconnected from the electricity supply, both our habitats, the existing regulatory framework and the economic investment that it entails, is extremely complicated. In all cases, the objective that we have to pursue is to go a step further, to progress.

Which aspects are most important when building an ecological home?

The first thing I would like to assess is to see if you qualify this house or we can use one that already exists, because the whole building occupies a space of nature. Així, had just built a proposal to rehabilitate both sustainability criteria. Dit això, cal to study l’entorn; the climatological conditions and orientation; the architectural configuration and the seva related to the energy demand; The choice of materials and installation, water consumption, passius systems … It is all important and must be considered during the project. Després, depending on each project, will occur more in one aspect or another.

Do materials, for being ecological, have any additional cost to the hour to obtain or is it inverse and are they cheaper than conventional materials?

Caldria value not only the monetary cost, but the environmental cost. For example, I am sure to pay one month more for a whip obtained from a forest managed in a sustainable way than for an obtained sense of control, but avoid running into a deforestation process. D’altra banda, the catalog of materials and construction solutions is so extensive that it is difficult to answer the question in an absolute way.

Is it easier or more difficult to obtain an ecological material?

If you check the vernacular constructions in adonarem that the materials are the own of the lloc, you will obtain sense necessitat to go through great mitjans or consume more energy. An exemple d’això are the constructions of tàpia, with whip entrebigats. The difficulty avui rau in train with the usual dynamics. For example, at the time of prescribing materials, a criterion of selection was made.

From an architect’s point of view, is it profitable to think of building ecological houses?

The economic yield is the resulting equity between invested resources and income. Some architects and there have been little feina, so the performance … Molts studies have socat because they cannot assume the maintenance costs with the civil liability assurances or contributions to social security.

More than the profitability of the profession, they are the transverse benefits that the ecological cases bring. D’a band, the owners are diners, to consume less energy. I consume menys energy and resources, pollute menys i, per tant, ens beneficem tots. What is important here is to think about the social function that can fulfill the architecture thinking not only in the figure of the architect but in the set of agents that intervene in the sector of construction and urbanism. It is to say, measure the one that contributes to the whole of the joint society a legitimate benefit for the activity with the general interest.

I from the point of view of a city? Is it cheaper or cheaper to think about buying an ecological house in front of a conventional one?

An ecological habitat, which consumes only a little, will require one more money invested than a conventional one. But as these habitats consume less energy, from the first day the owners will establish diners to amortize the cost difference in a term of approximately one five years. From the cinquè any hauran alliberat an economic income that they will be able to administer with vulguin: treballar menys, buy millor menjar, anar de vacances …

You will also differentiate that point of view with respect to the point of view of the city, because to speak of citizens is to speak of individuals who share rights and obligations in a political community. If I pollute myself, I harm the conciutadans meus. If he consumes much energy, he contributes to what he fought for and, per tant, to him