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Aesthetic and functional roof structure with perforated Frequence® steel sheets protects El Molinete Archaeological Park
A new roof structure, functional yet aesthetic, protects the Roman ruins in El Molinete archaeological park in Cartagena, south-east Spain. Its lightness and transparency, achieved thanks to use of Frequence® perforated steel sheets, create a vibrant dialogue with the different architectural styles in this historical port city.
Vibrant element in the archaeological surroundings
The architectural project basically consists in protecting the archaeological remains of the Roman settlement in Cartagena with a roof and complements the Molinete Park with a footbridge to offer the visitors a safe tour through the park with good views of the ruins. The Molinete Archaeological Park comprises the Roman baths, palestra and domus, which still remind of the ancient history of the port city of Carthago Nova as it was called from around 200 BC to 435 AD when it played an important role in the Roman Empire.
The new roof is without a doubt another highlight in the urban landscape of Cartagena, with the mission of making compatible its different architectural styles, creating a vibrant neighbourhood.
Protection and transparency in one
The project unites the ruins in space and thus allows a continuous perception of the set which is only fragmented towards the exterior in order to respond in an adecuate manner to its urban surroundings, the city on the one hand, and the Molinete Park on the other. On pedestrian level, the element can only be perceived partially, but from farther away, from the top of Molinete hill, the project appears as a whole, highlighting its dimensions and particular shape.
Furthermore, the roof created a new urban façade, limiting the ruins towards the east and hiding their presence with a folded metal structure.
The main objective is to present the Roman ruins with the due respect by the means of a large span roof structure that requires a minimum of vertical supports.
The fact that it was impossible to build supports on the north front due to the adjoining Roman Road, the majority of the columns are concentrated on the rest of the plot's borders, including only three in its interior. The division of the columns in groups of minor diameter lets them appear lighter.
The roof contributes to this sensation of lightness and is conceived as an element that permits the penetration of light, composed of elements that ensure it is waterproof (Polycarbonate) and another material that filters the light and provides visual homogeneity from the exterior. (Perforated steel sheets)
Also the illumination at night contributes to the light appearance of the whole roof structure, so do the rest of the elements of the project:
- The footbridge is a light element hanging down from the roof structure on one side, on the other side it rests on the wall that limits the archeological park. Conceived as a glass box, it permits the view of the ruins from 3 m above and is also accessible for disabled people.The ticket office is integrated into the original fence and rises out of the folded structure. It contains all the installations of the park.
Steel for the roof
ArcelorMittal supplied the perforated steel sheets for the envelope of the tubular roof structure: a total of 5.500 m2 of Frequence 14.18 C sheets (0,6 mm) with Kristal® coating, painted and perforated (N12).
Due to the interesting geometry of the roof and the many different inclinations, assembly was very complicated.
This project of cultural importance is a good example how spectacular architecture can be created with a product as simple as an undulating steel sheet.
Text: AMANN, CANOVAS MARURI & Constructalia
Aman, Canovas Maruri arquitectos, Atxu Amann, Andrés Canovas y Nicolás Maruri (Project Managers)
- Sept. 2010 - Nov. 2011
Cartagena Puerto de Culturas
- Engineering Firm:
Jose Cerezo Ingeniería
Taller de Construcción TMR