Le facciate aquilane: la reversibilità e la compatibilità in un intervento di restauro. Il caso di San Silvestro a L'Aquila
In: Quaderni dell'Istituto di Storia dell'Architettura: 73-74, 2021
The facades of L’Aquila: reversibility and compatibility in a restoration project. The case of San Silvestro Church
The restoration project here presented is related to some consolidation works aiming at reducing the seismic vulnerability of the San Silvestro church façade, in L’Aquila. The earthquake of 6th April 2009 revealed some façades vulnerability in the so-called “crater area”. In particular, their quadrangular shape at the edge of double-pitched roofs buildings made them even more vulnerable. These architectural uses – normally adopted on most 13th and 14th-century buildings – leave considerable portions of the triangular-shaped masonry exposed to stress, since they are not anchored to the masonry behind. During the seismic action, they are subject to strong bending stresses, which may lead to their collapse. The restoration intervention has been an attempt to mediate the problems related to the different design hypotheses. The solution adopted through the construction of a counter-facade spur has been investigated from various points of view: from the vulnerability reduction during the seismic phase to the compatibility evaluation of the new element within the pre-existing structure to considerations regarding its insertion in a historic context.
Particular attention has been paid to make the intervention reversible, or better still, to the possibility of creating a work with a high degree of reworkability.