Survey and representation of historical surfaces: the colours of Jodhpur

Survey and representation processes aimed at heritage preservation are a complex task, requiring an integrated and “cross-disciplinary” approach, able to assess and include different elements at different scales. The so-called “critical survey” means how to approach heritage through visual investigations and critical analyses, addressing central issues in order to frame interpretations and priorities. One of the most significant features of the historic city of Jodhpur is its characteristic blue colour still widespread on different surfaces and historical architectures. Therefore, the analysis of the surface characteristics, including the geometric, architectural, decorative, material, conservative and chromatic aspects is essential for understanding and preserving historical heritage. An accurate and overall on-site survey allows improving the awareness of the needs of the historical city in order to plan maintenance processes able to preserve heritage to future generation and to understand how the development of the historic city could meet the need of preservation of traditions and cultural assets. Diagnostics survey and representation should guide to the use of visual, diagnostic and documentation methods in order to deal critically the study of heritage. The essay will describe researches and on-filed thematic survey achieved in Jodhpur, focusing on the facades’ colours analysis and pointing out some considerations regarding the chromatic influence in urban paths and spaces, according to the shape of urban areas (streets, squares, open public spaces, etc.).