| The releveling of the metropolitan Cathedral and Sanctuary of Mexico City was a unique project worldwide due to the complexity of the Mexican subsoil, and to their importance as historical monuments more than 500 years old.
At the end of the 1980s, the buildings registered significant diverse settlements (such as a difference of 2.4 meters between the levels of the principal altar and the western tower), which had produced cracks in the structural elements and problems of extreme stability.
To solve the problem, in May 1991, among other solutions that were proposed a project of sub-excavation was decided on. To that end, 32 portholes were built to permit the recovery of 94 cm of the original difference in the level, registered from north to south.
In the beginning, in order to carry out these works it was necessary to shore up the superstructure of the Cathedral and the Sanctuary. Loading tests were made and 200 cores, injected with 5,192 m³ of sheets of mortar, were cast, after which, metallic rings were placed in all the columns of the central nave, joining them to one another by means of reinforcement elements.
The installations were at the time always open to the public.
As of 2002 the “Altar de los Reyes” (Altar of the Kings) of the metropolitan Cathedral was restored and reinforced.
All these works have been successfully coordinated and supervised by Systec as of their inception, and to this end, the company interacted with the corresponding ecclesiastical and government authorities. |
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