The project corresponds to a one-story residential building built in 1962, which was planned to undergo an interior remodeling. The remodeling aims to modernize the interior spaces by integrating the environments, with the demolition of several walls. Additionally, an opening is made in the ceiling to generate access that allows said area to be used for some rooms.
The house is built of reinforced concrete with an irregular configuration in plan. The roof is formed by a slab ribbed in one direction, supported on load-bearing beams and load-bearing walls made of solid brick and concrete.
An evaluation of the ceiling slab was carried out considering the demolition of the load-bearing walls and the new opening for stairs that give access to the roof, as indicated in the architectural project, and the need to generate a construction sequence that included reinforcement was determined. , prior to demolition.
An evaluation of the ceiling slab was carried out considering the demolition of the load-bearing walls and the new opening for stairs that give access to the roof, as indicated in the architectural project, and the need to generate a construction sequence that included reinforcement was determined. , prior to demolition.
It was verified that the new overload imposed on the roof, due to the new occupation use, exceeds its resistance limit. After evaluating several alternatives, it was decided to use an auxiliary metal structure to support a new mixed composite slab for the new room area, a slab which would be elevated 0.45 m higher than the existing one.
A seismic evaluation was carried out, incorporating the walls into the model and assuming that the structural elements are not capable of dissipating energy in a ductile manner. It was determined that the existing building meets the resistance demand imposed by the design earthquake, so no additional seismic reinforcement was required. The upper level is governed by wind stresses, whose response is controlled through concentric bracing.