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Current situation

A good part of the façade is resolved in steel and glass, following the style of the Nordic and American office buildings of the time. This type of enclosure generates energy losses that are out of date with current regulations. The steel pillars cross the entire façade, giving rise to thermal bridges that, according to the study of the façade module, meant very high losses, not to mention that the biggest factor that determines these changes is the windows, since having a transmittance of 5.7, the losses of this façade module represent 700 W.

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In the plan above we can clearly see how this facade needs an intervention to comply with current regulations. On the other hand, the passage of time has degraded the materials, this and the lack of insulation has meant a need for users to acclimatize the interior. Installing air conditioners that, at a compositional level as we can see in the image of the current building, breaks with all facade aesthetics. Giving rise to a disorderly building and losing all original orthogonal composition sought by the architect where the uprights and parapets governed the building. We will see all these problems solved in the new proposal, emphasizing the importance of energy rehabilitation but without losing sight of the importance of maintaining the aesthetics of an emblematic building of the time.

Action phases

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Phase 1: Exterior Structure

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Phase 2: Coatings

The first approach we made was compositional, to recover the original visual of the building we considered the strategy of a double skin, where the exterior will emulate the initial composition. In this way we can rehabilitate what will now be the interior façade without fear of losing the compositional order of the Robert Terradas building.

 

· Phase 1:   This second skin is made up of galvanized steel uprights and crossbars following the thickness of the original façade. With a rhythm of three slimmer studs each one thicker. The enclosure of this outer skin will be some simple steel carpentry. Allowing as much light as possible to enter the building, the way in which we join this second skin to the building is done by means of IPN and UPN beams welded to the new uprights and anchored with L-shaped plates to the uprights of the original façade, allowing a slight movement to avoid bending due to expansion. These beams support a practicable grid walkway, allowing the maintenance of both the two facades and the air conditioning installations.

· Phase 2:  For the interior skin we solve the problem of the carpentry and the uprights by setting the windows back, adding a continuous sliding door that remains behind the uprights, these sliders are made of aluminum with broken thermal bridge and double chamber. For the lining of the lintel we use aquapanel system plates joined by a substructure of screwed aluminum guides. In which a mineral wool insulation is added and it ends up closing with these tile effect aquapanel panels. We will also treat the cladding, taking advantage of the fact that we will remove the existing false ceiling by adding a double layer of plasterboard. 

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Current state of the facade

Inner skin proposal

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Current status 

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Proposal 

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Rehabilitation of the ETSEIB   (4th course)

This building is the "Higher Technical School of Industrial Engineering", built in 1964 and designed by the architect Robert Terradas. Located in Barcelona, university area

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