Retrofitting systems used in two industrial buildings in Mexico City

ABSTRACT

The buildings to be presented are special structures characterized by having very heavy live loads, large story heights and long beam spans. The general behavior of these buildings should be compared with the strength and serviceability requirements specified in the Mexico City Building Code. In the cases to be presented, retrofitting systems were used in order to upgrade the structures to the new force levels specified in this Code. In these structures, the retrofitting scheme used consists of braced steel frames, located in the interior and exterior of them. Connections among the steel members and between the steel frames and the existing concrete structure were carefully designed to ensure proper shear transfer. In both cases the foundation was also strengthened (AU)