«The collapse was not determined by the weight of the heat pump , but by its overturning on an already excessively overloaded attic in 1976, when the floor was redone without demolishing the existing one». This is what emerges from the final consultancy filed yesterday to the Public Prosecutor's Office by the structural engineer, Maria Cristina Onnis on the collapse, last October 18 , of the two-storey building of the University of Cagliari which housed the Faculty of Languages in the humanistic pole of Sa Duchessa .
In fact, the building was powered by an air-water conditioning system, where the internal units were connected to the external one through a single pipe which had the task of conveying the water for heating. «A heat pump detaches and drags the one next to it and then the other again, until it takes the outdoor unit with it. At this point the machine overturns and hits a beam which gives way», reads the technical report.
«Due to the collapse of a joist , an event in itself not so fatal, a disproportionate and progressive collapse was generated which resulted in the collapse of the entire attic which lay like a tablecloth on the one below».
Indeed, during the demolitions underway these days, it was possible to confirm that dynamic.
