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Mostrar mensagens com a etiqueta ECOHOUSING. Mostrar todas as mensagens

quarta-feira, 23 de maio de 2012

El barro. Las manos. La casa




Existe una creencia general asentada que en una tecnología mas avanzada es siempre mejor a todas sus predecesoras. Esta creencia quita de la ecuación factores como el ámbito de aplicación de esa tecnología o lo que se requiere de ella, como factores para determinar si una tecnología es mejor que otra.

Esta creencia es la que lleva a pensar que el corte por laser es siempre mejor que el corte por sierra, que el tractor es siempre mejor que el arado, o que el cemento es siempre mejor que la arcilla. Ello conlleva asumir toda una serie de prejuicios asociados en los que probablemente exageremos las virtudes de la tecnología o material novedoso, y los defectos del antiguo.

Contra esa inercia debemos luchar, pues un estudio mas profundo nos puede dar muchas sorpresas sobre las mejores herramientas, tecnologías o materiales a los que acudir en un contexto especifico. Como bien nos muestra el concepto de "tecnología intermedia" desarrollado y estudiado desde hace varias décadas por organismo como el Soluciones Practicas.

Después de la reflexión os dejo con un documental muy instructivo y didáctico sobre la construcción con arcilla.

Se centra en Jorge Belanko, albañil, docente y capacitador argentino que nos enseña el oficio, técnicas y posibilidades de este material. Muy recomendable para derribar prejuicios adquiridos por vivir en la meca del culto a la ciencia y la tecnología.

Fuente : http://asfcomunidadvalenciana.blogspot.pt/2012/05/el-barro-las-manos-la-casa.html

sexta-feira, 10 de fevereiro de 2012

Abandoned stable becomes off-grid, luxurious family dream home


When Carlos Alonso and his sister Camino were looking for a country home for their extended family, they stumbled upon an abandoned stable in rural Extremadura, Spain and recognized it as a special place.

High on a hill and far from city water or an electrical grid, the crumbling cow shed was far from the conventional image of luxury estate, but Carlos and Camino run the prestigious Madrid architecture firm Ábaton Architecture (which includes Camino's husband and 2 other Alonso siblings) and could envision a transformation.

Wisdom of those who work the land

This part of the province of Cáceres (near the Portuguese border) has been home to generations of cattle ranchers and the Alonsos recognized the wisdom those who came before them.

“What we found here was magnificent. The position of the architecture is here as it was originally because the experience of the rancher was to choose the best position on the property where you have water and sun all year round.”

A stable becomes home

Building on the instinctual knowledge of the ranchers before them, the Alonsos preserved much of the old stable. The old watering trough became a fountain and interior patio where water now helps cool the home in summer. The hay loft above became bedrooms.

The facade is still the original stone, though given the homes crumbling state, they were forced to add cement behind it.

A second skin for an off-grid home

Without access to the grid, the Alonsos added photovoltaics and hydro power (weighted toward solar in summer and hydro in winter) and worked to ensure the home wouldn’t use much energy.

The original position of the stable worked to their favor. The southern exposure allows for the sun to be the main source of heat during the winter. It’s position and a generous eave prevents much sun from entering the home during summer, thus keeping it cool.

The Alonsos also added large wooden shutters that slide closed like a second skin, covering the large windows at night to trap in most of the home’s daily solar heat gain.

Water pure enough to drink

The home was located far from city water, but perfectly positioned below two streams that flow year round. Since there is no one else above the home on the mountain, the water is pure and can be used for drinking and bathing (after a simple filter and rest period to allow for the sediment to sink off).

The natural stone swimming pool acts as a holding tank for use in irrigation. And greywater is purified and the water is put back to use on the property for watering the fields. On those fields, cattle still graze.

Mixing modern with wabi-sabi

In many ways little has changed on the property. The Alonso’s added their taste in architecture: a mix of modern cement and iron beams with the well-worn stone, weather-beaten wood and local stone.

Their love of a Japanese aesthetic led them to incorporate nature into nearly every room in the home: bathrooms with views of the interior patio and its stone water fountain, bedrooms with huge picture windows looking out at chestnut trees or cattle grazing.

Working with nature

But the property has changed little with the arrival of the Alonsos. The house sits exactly as the stable did. The sun continues to hit it the same way and the water flows around it as before.

Even local rancher José Vicente Jiménez, whose family has worked this land for generations, is still here. His cattle graze the property and he clearly is pleased the Alonsos have rescued the old stable from certain ruin (he points to a nearby stable in the process of collapse).

The Alonsos share a mutual respect for the experience of those who used this land before them. “People from the country know a lot. They take from nature and their experience in nature, since it accompanies them and helps them to survive, and they work with nature, not against it.
 

Cave home in Loire is charming bioclimatic troglodyte house


In the Saumur region of France there are over a thousand miles of underground tunnels and thousands of caves, known as “troglodytes”, homes, hotels, restaurants, museums, wineries, farms (silkworms, mushrooms, snails) and even a disco and a zoo (for nocturnal animals like bats).

What makes this land so perfect for underground dwellings is its very malleable rock. 100 million years ago, this part of France was covered by sea. When the water receded, it left a layer of tufa, or tuffeau, a type of limestone that turned out to be ideal for building castles, churches and homes in the surrounding area during the Middle Ages.

All of this quarrying created lots of tunnels and caves that turned out to be ideal homes, especially for quarrymen. Up until the early 20th century, troglodyte living was still common in the area. Even entire villages, like that of Louresse-Rochemenier, were housed underground.

In 2000, when Henri Grevellec retired from teaching, he bought an old quarry and moved into one of the old caves. On his property in Grezille, France, there are 6 caves that had once housed quarry workers centuries ago.

The site was abandoned when Grevellec purchased it, but he cleared away the growth and renovated the caves himself. He put in a modern kitchen and bathroom and in his bedroom (at the far back of the cave) he added a skylight to improved air circulation and add a bit of light.

Of the 6 original caves, one became a guest room (which he connected by tunnel to his main home), another is now his workshop (for his stone-working tools), another he left as it once had been (complete with wood-burning oven) and he uses part of one as a wine cellar.

Grevellec says the temperature in his cave home is naturally temperate. He doesn’t need air conditioning and leads much less heat than a normal home because the earth walls act to naturally regulate the indoor temperature (see more on earth sheltering for details on earth walls as thermal mass).

In this video, Grevellec shows us his cave home, the fossils he has discovered on his property, his stone-working tools and he talks about his love of the rock.

* Music credit: "Ranz des Vaches" by Kevin MacLeod, "The Forest and the Trees" by Kevin MacLeod, "Divertissement" by Kevin MacLeod (http://incompetech.com)