Refurbishment of the façade                                                                                Rijkswaterstaat...
Refurbishment of the façade                                                                                               ...
Refurbishment of the façade                                                                                Rijkswaterstaat...
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Facade Refurbishment of Rijkswaterstaat Westraven by Jasper Moelker (October 2006)

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Assignment: Research & Design project for the refurbishment of the facade of the Rijkswaterstaat Westraven building in Utrecht. In the development the facade, construction and climate system should be integrated.

Solution: By replacing the excisting façade with an aluminium-glass façade and introducing a second
façade of louvres, all requirements can be met in an integrated intelligent façade design. The
louvre façade is used for sun protection, noise protection, bringing more light in the back of the
offices, pre-heating air, producing energy (with PV cells), allowing sight and preventing glare.

This project was designed as educational project within the Architecture, Urbanism & Building Sciences master program (1st semester) at Delft University of Technology (TU Delft).

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Facade Refurbishment of Rijkswaterstaat Westraven by Jasper Moelker (October 2006)

  1. 1. Refurbishment of the façade Rijkswaterstaat Westraven Utrecht Refurbishment task: Investigate the chances and possibilities of the application of the façade material and construction method on the given building envelope. This assignment is a combination of research (analysis) and (re)design of an existing building façade. This façade design stands not for itself and should be considered in combination with a designed main construction and a climate installation. The to be redesigned building: The build- ing is owned by the ‘Rijksgebouwen dienst’ (RGD); the Dutch government. The RGD leases the building to different users. This constellation leads to the fact, that the owner is mainly concerned with keep- ing the building flexible and adjustable to the demands of the user. << Case study building in its context Jasper Moelker | 1178466 | TU Delft | Faculty of Architecture | MSc-1 | Technical Studies | Refurbishment of the façade | October 2006
  2. 2. Refurbishment of the façade Rijkswaterstaat Westraven Utrecht Requirements Situation Rijkswaterstaat Westraven Utrecht (1:2000) Heal sick building syndrome Good insulation The syndrome is mainly caused by will reduce the energy cost and indoor air pollution, abscence of sun- losses. Next to insulation material light and poor ventilation. the louvre façade acts as a second skin. Installations - Individual Removing asbestos parts The installations (sun protection/ Part of the excisting façade (the tubing etc.) will be integretad. The balustrade) contains asbestos and climate will individually adjustable. will therefore be removed. Reduce noise pollution Reduce air pollution A12 The A12 highway is on the north The A12 highway produces air side of the building. Therefore this pollution. By using air filters in the side will be a closed glass façade. air intake system this is reduced. Openable windows Flexible use On the higher floors manually The building needs to be adjust- openable windows is a must to able to the demands of the user. heal the sick building syndrome. Therefore the sizing of the façade will correspond with the construction. Concept - Louvres By replacing the excisting façade with an aluminium-glass façade and introducing a second façade of louvres, all requirements can be met in an integrated intelligent façade design. The louvre façade is used for sun protection, noise protection, bringing more light in the back of the offices, pre-heating air, producing energy (with PV cells), allowing sight and preventing glare. Louvres - Reflective hydrides Transparent Reflective In the normal situation reflective When electricity is guided through hydride glass is transparant and the ions in the glass the outside will allows light and sight to penetrate reflect light but sight can still pene- Floorplan - Upper levels (1:200) from both directions. trate from the inside. Shaft with Louvre façade PV cells PV cells Electricity The louvres with PV cells rotate with the sun and produce electric- ity for the build- ing. Glass façade Heat air (closed) Air cools the PV cells. Heated air is used for the offices and for the chimney effect to suck air out of the offices. Electrical installations Sensor - actor system manual In the louvre system sensors are override integrated so the climate can be regulated centrally. The system has a manual override so people can adjust climate to their own wishes. Building - 3D impression Wiring The wiring of the louvres etc. is placed in the air intake boxes, the suspended floor and roof. On the air intake boxes are all the sockets and switches needed by the user. Louvres system Summer day Night Active façade The louvre façade is divided in three sec- tions. The sections react to the outside in different ways. - They rotate with the sun. - The 2 upper sections become reflective when they need to bring in light further Cloudy day or keep it outside. Sun near horizon - The lower section has PV cells on it and follows the sun. When te sun is standing low, the façade shuts and acts as a second façade pre-heating air for the offices. - During the night the façade closes to keep the warmth inside. Air system Breathing façade Air is guided between de louvres and the glass façade (and is heated when the façade is closed). Then it is guided inside through the noise reduction box where the air is also filtered and brought to the right temperature. The air get sucked out through a box on the ceiling and goes to the vertical air shafts where the sucktion is created by an air stream which is created by the rising temperature of the shaft. Jasper Moelker | 1178466 | TU Delft | Faculty of Architecture | MSc-1 | Technical Studies | Refurbishment of the façade | October 2006
  3. 3. Refurbishment of the façade Rijkswaterstaat Westraven Utrecht Fragment of the façade: elevation; long-section; cross-section (1:20) 8 5 1 6 7 9 2 10 11 3 12 1 13 14 16 15 4 Legend: 1. Louvres - PV cells 2. Louvres - Hydrid reflictive glass 3. Louvres - Hydrid reflictive glass 4. Vertical ventilation shaft - PV cells 5. Suspended floor 6. Concrete floor and beam (construction) 7. Suspended ceiling 10 11 8. Cable gutter 9. Air (out) shaft 10. Vertical aluminium window frame, rubber strips, 15 clickable cornice 11. Horizontal aluminium window frame, rubber strips, clickable cornice 12. Noise reduction box, with louvre, heating and cooling by tubing, electral and network sockets 13. Angular profile for montage of vertical window frame and louvre frame 14. Insulation 15. IPE-column with fire protection cover 16. Maintainance rail (for automated cleaning) Impression façade materials: glass, aluminium, PV cells Schematic assembly of the façade Detail of the façade - floor: (1:5) 1 15 10 11 5 8 13 6 14 9 7 Jasper Moelker | 1178466 | TU Delft | Faculty of Architecture | MSc-1 | Technical Studies | Refurbishment of the façade | October 2006

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