The manager of Abscisa3D, Maite Aranda, and geomatics engineering Paula Noriega have been working since last May to carry out a 3D scan of the Toledo Cathedral, a work whose incredible results were presented last Wednesday in the primate temple before a large group of Toledo residents, among whom were Archbishop Francisco Cerro and the dean Juan Pedro Sánchez Gamerowho have supported from the beginning this project of great value for the conservation and study of its immense and unknown heritage. Thanks to the efforts of the College of Geomatic and Topographic Engineering (COIGT) and the company Abscisa3D, which have joined forces, it has been possible to scan almost 99 percent of the cathedral, something unthinkable just a few years ago. In total, there have been 1,679 scans and 68,000 million points to make a millimeter x-ray of the temple and all its innards. Maite Aranda and Paula Noriega They explained how, in this time, they have entered into theThe most hidden places in the building, through the triforiums, those narrow galleries that surround its interior to connect the naves in the guts of this primate temple, which has, according to what they have counted, eighteen different spiral staircaseswith its steps carved in stone. For Aranda and Noriega it was a surprise to discover this type of stairs, which they encountered every time they opened doors with one of the hundreds of keys handled daily by the cathedral employees, who have also been very important in these renovation works. scanning and to those who thanked them for their support in these weeks.
Among the tools for 3D works A laser scanner has been used that captures “two million points per second.” The RTC360 and BLK2GO laser scanner from Leica Geosystems have allowed us to capture every corner of the cathedral with millimeter precisiona job that took them approximately a month and a half, and the calculation and analysis, two months. Results This technological advance will serve to preserve their artistic and cultural heritage. The 3D model will allow architects, conservators and archaeologists to carry out more detailed and precise studies on the structure, materials and current state of the cathedral. You can also obtain 2D, 3D plans, BIM models of the areas that require it; locate pathologies in previously inaccessible or inaccessible areas; have an inventory of everything that is part of the cathedral in 2024 and, furthermore, in the event of a disaster, such as a fire, it could be rebuilt with complete fidelity.
A job that these two professionals will never forget because they have fallen even more in love with the magic of the Toledo Cathedral. In the case of Paula Noriega, company manager, because, as she herself confessed, she has fulfilled a dream that she had been cherishing for 20 years, just as long as this Asturian laser scanner expert has been living in Toledo. And Maite Aranda, specialist in Cadastre, Real Estate Property and Valuation, and currently technical general secretary of the Delegation of Castilla-La Mancha, this work has also allowed her to rediscover that cathedral to which her father, the Toledo academic Fernando Arandataught him to love, and to climb the tower again, as thousands of Toledo children did years ago.
The Official College of Geomatic Engineering and Topography and the company ABSCISA3d The scanning work of the Primate Cathedral began in the month of May, in a performance that is framed in the context of the celebration of the VIII Centenary of the current Gothic temple, which will be celebrated in the year 2026, and which, according to its creators, “aims to raise awareness of how important it is to have ‘digital twins’ of the architectural jewels that have come down to us and we are obliged to preserve for future generations.
The cathedral of Toledo, in Gothic style, began to be built in the year 1226, when archbishop Rodrigo Jiménez de Radaon the foundations of the 6th century Visigoth cathedral, which during Muslim domination had been used as a mosque and, after the reconquest of the city, restored to Christian worship; Currently, it is the most emblematic building in the city, visited by thousands of people every year.
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