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City Hall Lochem
City Hall Lochem
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City Hall Lochem
RAU Architects won the tender for the new city hall of Lochem, The Netherlands. RAU was chosen as the best submission by the selection committee and by the local population.After completion, the building may well be the first CO2 neutral, zero energy city hall in the Netherlands. If the plans proposed by RAU are implemented without any changes, the building will meet all its own energy needs, requiring no external energy supply.This is made possible in part by the use of an energy roof which achieves a triple energy yield: photovoltaic cells generate electricity, while solar collectors supply heat energy. Combining these two systems makes it possible to maintain optimal temperatures in the PV cells. This approach not only increases the efficiency of the PV cells, but also extends their lifetime because they no longer overheat.In line with the cradle to cradle concept, the building will incorporate as many recyclable materials as possible. For example, the carpets will be made from used textiles, while the doormat will be made of old car tyres. The paints contain no heavy metals, the floors have a natural rubber finish, and the insulating material is made of flax. Clay is a natural building material which is in ample supply. Clay plaster is not only environmentally friendly, but also has a positive influence on the indoor climate of the building due to its excellent ability to absorb moisture.The energy-saving low-temperature heating system makes it possible to use residual heat and cold. Low-temperature heating systems prevent strong air currents and cut down on dust, spreading fewer airborne allergens. The indoor climate is cleaner, causing a reduction in respiratory problems among staff and visitors.But of course there is more to it than just an energy-efficient, environmentally friendly building with a healthy indoor climate. The building has also been carefully integrated into the surrounding urban architecture.The architectural diversity and the complexity of the historical tapestry of the city centre has steadily grown and developed over the centuries. A new building cannot easily approximate this wealth of diversity and history. Nevertheless, due respect for Lochem’s architectural heritage was an important guiding principle for RAU during the design process.The appearance and materials of the intricately detailed façades in the city centre are echoed in the design. The robust brick structures exude a feeling of reliable solidity. The façades are made of recycled brick. The design also takes into account the different situations on all sides of the building. To ensure a smooth transition to the Etalage neighbourhood, the different sections of the city hall vary in height and the materials chosen for the façades are linked to their immediate surroundings.The character of the city centre lies in its beautiful squares, streets and alleys. Water and huge old trees lend charm and atmosphere to the city. The city centre is, as it were, drawn into the city hall, flowing across the Berkel River, over the new square and through the glass front and all the way into the building’s foyer. The square is divided into different zones, allowing it to take on different qualities within a limited area. Along the Berkel, people lounge on spacious steps and outdoor café terraces. A large tree in the little park offers restful shade, while a shallow water feature brings refreshment. The pedestrian zones of the square are tiled in various colours.Construction of the city hall is expected to start in autumn 2010.
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