3069 x 2250 px | 26 x 19,1 cm | 10,2 x 7,5 inches | 300dpi
Date de la prise de vue:
22 février 2005
Lieu:
Anthropology Museum, Mexico City, Mexico
Informations supplémentaires:
This is the central courtyard of the National Museum of Anthropology in Mexico City, Mexico. Dominating the courtyard is a steel and concrete canopy measuring roughly 82 x 54 m at a height of 16.8 m. The canopy appears to be supported solely by a single central pillar known as El Paraguas (the umbrella) down which cascades water. Every five years maintenance is performed on the 80 steel tension cables. The column itself also needs maintenance because it is in a constant humid environment. Since its construction in 1963 dust and incrustations have built up and some areas were corroded. In 2018 the German company Kärcher used a dry ice blasting technique to clean the pillar. This involved using compressed air to blast 3mm diameter pellets of carbon dioxide, held at a temperature of -79°C onto the surface of the column. The pellets shift from a solid state to gaseous at the moment of impact. The increase in volume during this change blasts dirt and pollution from the surface without damaging the aluminium underneath.
