Expressions of Arab Influence on the Brazilian Architecture: The Case of Solar Control Elements

Over the centuries, architects have distanced themselves from the accumulated architectural knowledge, which often provided constructive solutions highly connected to the climatic context and cultural characteristics. With utmost expression from the 20th century on, building designers have assumed a somewhat negligent attitude towards the architectural project, essentially relying on active mechanical systems, to achieve indoor environmental comfort conditions. This paper overviews the current knowledge of solar control elements adopted and developed by Brazilian architecture, tracing its origin to the influence of Arab and Moorish architecture, with the objective of valuing passive solutions. Arab influence in Brazilian architecture began in the 17th century when Portuguese settlers felt the need to adapt the colonial buildings to the climatic constraints, particularly with regard to excessive solar radiation, leading to indoor thermal discomfort and excess natural light. Arab influence in Brazilian architecture remains present until the current day with the same objectives; however, it has been reinterpreted and appropriated by the Brazilian architectural school. Among the most used construction elements during the colonial period were the muxarabis, rótulas, and gelosias. Throughout the 20th century, these elements were culturally appropriated and served as inspiration for the development of the cobogó and the pioneering use of brise-soleis in Brazilian architecture. These elements have spread throughout global architecture, accompanied by the adoption of computer-controlled dynamic solar protection systems. Therefore, it is important to promote traditional solutions and encourage new architects to adopt passive approaches, aiming for energy efficiency and reducing environmental impacts.

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