The company CAV Diseño e Ingeniería, in charge of dismantling the mosaics and demolishing the SCOP Centre in Mexico City, has jointly contracted a multidisciplinary research team from the University of Valladolid (UVa), coordinated by Alberto Izquierdo Fuente, and the Santa María la Real del Patrimonio Histórico Foundation, to apply preventive conservation criteria to guarantee the proper conservation of the murals.
In essence, the procedure is based on mounting metal self-supporting packaging on the walls that support the murals, decoupling these walls together with the building's mosaics using diamond wire cutting techniques, and finally lowering the murals to the ground with their associated concrete walls by means of two cranes. Throughout this process, the UVa multidisciplinary group (made up of researchers from the Array Processing GIR, the Structural Dynamics Group and the Structures and Wood Technology GIR) has developed 4 acquisition and processing devices that analyse the state of vibration in real time and generate a visual and audible warning at the construction site while saving the statistics and significant records in the Monitoring Heritage System platform of the Santa María la Real Historical Heritage Foundation.
The objectives in this project are:
- To warn in real time on site of a vibration level exceeding a threshold and therefore to be able to stop and/or modify site operations on the walls supporting the murals.
- Record the levels of these vibrations (maximum, average, etc.) on a regular basis.
- Record time signals when a warning is generated.
- To model and analyse the vibration levels experienced by the murals during cutting and moving operations from their current location (vertical position) to their storage (horizontal position).
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