The object of this study is a building hit by the earthquakes that affected Emilia Romagna on 20th and 29th May 2012. The artifact, productive nature and seat of a company located in Novi di Modena, should therefore be subject to interventions that would permit the improvement of the seismic response in order to overpass at least 60% of the requirements for new buildings.
The artifact is an independent structural unit attached to buildings of typological characteristics and dimensioned differently from the one analyzed.
The building is characterized by an arc coverage (type “Varese”), having beams placed at a distance of about 100 cm. Each arch is provided at its base with a metal rod to eliminate horizontal thrusts.
The peculiarities of the building are the important light of these arches (approximately 13.8m) and the total lack of retainer elements of facade gables.
In fact, in addition to the coverage hedge, where there is a concrete curb crowning the whole layer, there are no other systems to prevent tipping out of the layer.
Not surprisingly, in addition to the damages at the structure, this deficiency originated collapses of the coverage, accentuated directly at its highest portion. The masonry of the gable also showed a clear horizontal crack due to the complete gable folding mechanism.
The project involves the demolition of the current coverage while preserving the existing facades and, secondly, the implementation of a new internal metal structure. The project provides for the realization of suitable retaining systems of existing facades to the new structural steel body.
The study activities were therefore initially focused on the definition of vulnerability in the current conditions of the building and then on the understanding of the behavior of the facades with the new building in metallic carpentry.
To be continued….