Wednesday, June 26, 2013

Models homes: EVA-Lanxmeer, a sustainable strategy



Directly south of the medieval town of Culemborg (from Kuilenburcht literally: pit castle), between the small Meer river and the railway, meadows were to be found until the end of the twentieth century. This location opposite the railway station had never been developed as  is was the site of a deep drinking water well. This meant that urban development was not permitted. But in 1994 Marleen Kaptein a resident of Culemborg had the vision of an ecological housing estate based on the EVA Concept. She found the town planners on her side. Also the water company took a positive stance towards development as long as water safety could be guaranteed.

In 1995 the municipality of Culemborg, with its green character and forward thinking town councilors decided the idea for an ecological housing estate in the Lanxmeer polder fitted well within their sustainability strategy. The provincial government of Guelderland was willing to allot extra housing quota to Culemborg on the condition that a minimum of 100 houses would be built between 1998 and 2002. In a coproduction between the EVA foundation, local government and the residents association Lanxmeer an area of 24 hectares (60 acres) is being developed with circa 400 dwellings, schools, offices and an urban farm.

Residents are mandatory members of the residents society (Bewonersvereniging EVA-Lanxmeer or BEL). It is not possible to live in this eco-estate without subscribing to the residential charter (Bewonersovereenkomst) that stipulates the number of motor vehicles a family is allowed to own (one but preferably none), the rules regarding the shared gardens, the rules on waste management, the expected participation in the upkeep of the living environment, etcetera.  The Terra Bella foundation, linked to BEL is responsible for maintenance of the whole terrain except the buildings and private gardens. The private gardens are small however, most of the outside space is in shared ownership (mandelig land) and thus responsibility for the upkeep is also shared. The paths, roads, waterways and ponds belong to the municipality of Culemborg. The municipality has outsourced the maintenance to Terra Bella for a fixed fee that is negotiated at the end of each year. Most of the maintenance work is done by volunteers (i.e. residents). Some of the work is contracted out to a landscape gardener. At the heart of the estate the drinking water well is located beneath an orchard. Terra Bella is also responsible for maintenance of this area. At summers end a harvest festival is organized in the orchard.



The urban plan for EVA-Lanxmeer is an example of "fragmented city" urban design with urban fragments imbedded in a green counter mould. This makes for an urban environment that is not easily navigated. Because so much of the area is reserved for green space the building density is high.


The paths and roads in part follow the old parcelling. The ditches are distributed in a similar way. The series of ponds follow an old river bend that silted up a thousand years ago. 

The drinking water well is put to  good use as a source of heating for the houses through a heat exchanger. Additionally warm water is provided by solar boilers on the roofs. Electricity is generated by solar panels. The local heat and power network is exploited by Thermo Bello, a foundation company  linked to  BEL. This energy company is fully owned by the residents of EVA-Lanxmeer. It is a good example of the EVA Concept merging social cohesion, self-determination and self-sufficiency.

Another example of the sustainable strategies employed in EVA-Lanxmeer concerns water management. Lanxmeer is the name of a medieval polder besides the Meer (this is also the literal translation of Lanxmeer: along the Meer) and thus water management is an issue. Here especially so because of the drinking water well. All clean (rain) water is led to retention ponds via a system of ditches. To limit runoff most of the roofs are planted with vegetation. Water from the streets is led to dry ditches and hollows where it can infiltrate the soil. Domestic water from dish washers, showers and kitchens is collected in reed beds for purification and then led to the ponds. There are three such Helophyte filters tucked away in the margins of the residential areas. Sewage is planned to be treated on site. The solids are to be separated and burnt in a Bio-gas plant; the liquid component can be released in the reed beds.


The urban fragments are organized in strips within the old parcelling of the polder Lanxmeer. At the heart of the estate lies the drinking water protection area (in green) that is covered by an orchard. Flanking this strips of housing (shown in red) have been arranged. On the north side along the artery road amenities and facilities (in orange) have been placed. North of the artery road the urban farm (indicated in olive green) is located in a bend of the Meer river. On the outer edges all offices and business premises (shown in purple) have been concentrated. Opposite the train station the EVA-Centre has been planned (shown here in yellow).

Situated opposite the train station the prospective residents of the EVA-Lanxmeer estate opted for discouraging car use and car ownership. The whole estate is transversed by walking paths and cycle routes. All parking places are situated on the edges of the estate; there is no motorized through traffic allowed. In several spots vehicles belonging to a local car sharing organization (Buurtauto by Wheels4All) are available for use. 

The final, but no less important, part of the sustainable strategy is the urban farm Catshaege. It is located on the edge of the estate bordering the Meer river. It was named after a farm (Katshaag) that once stood here. This organic farm provides food for the residents, but also grows plants for the outdoor spaces within the estate. The farm is run commercially and also has an educational function. Both crops and animals are to be interacted with by children and residents alike. The urban farm also plays a role in providing a fulfilling daily routine for people with disabilities and mental issues.

The plan of EVA-Lanxmeer encompasses both amenities, residential and commercial buildings. The commercial buildings and offices (C-O) are all located along the edges. They are mixed with facilities such as a public swimming pool (PP), Kindergarten (K), primary school (PS), secondary school (SS), religious centre (R), social work and welfare office (W)  and the EVA Centre (EVA) opposite the train station (T). The residential areas are a mix of 20% affordable owner occupied, 50 % high end owner occupied and 30% rental with both apartments (a) and family homes. The family homes are grouped around communal gardens (g) or in strips of terraced housing along shared outdoor space. There is also room for detached (d) and semidetached (s) houses. Central to the eco-estate is the orchard (O) that connects up to the urban farm (F), the string of ponds (P), helophyte filters (H), an archeological site (A), a nature reserve (N) and the drinking water plant with water tower (WT).

Although I personally would never be attracted to such a communal way of living I found it impressive to see how an idea(l) like this can work in practice.

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