The conservation of structures, intended as refurbishment of deteriorated elements or, more generally, as static and functional rehabilitation of buildings, has always held an important role in the history of construction as the protection of the building heritage appears a fundamental exigency. Furthermore, during the last decades, it has been registered a consistent growth of the number of refurbishment interventions on existing structures. This is due to various reasons, such as: natural ageing of the material; lack of adequate maintenance; designing and construction bad practices. This problem is particularly relevant in the case of plaster and reeds vaults that suffer of deterioration due to biological causes, in addition to mechanical, physical and chemical attacks. Such a biological degradation is closely connected to the external environmental conditions, which, therefore, have a strong influence on the structure durability. Furthermore, wooden centrings structures may present defects (i.e. knots, shakes, shape imperfections, fibre deviations, etc.) and structural anomalies (i.e. cracking, deformations induced by long duration loads, connection degradation, etc.). In addition, the intervention procedures on complex structures are always difficult, due to a series of successive alterations and modifications occurred during their life. In order to correctly focus on such a wide problem, the paper aims to present some consequential considerations, based on the case study of the plaster and reeds vaults, known as volte in arelle, in the Gran Claustro in the Certosa of Ferrara.
Neo-estense architecture and the volte in arelle in the certosa of Ferrara: application examples for the preservation assessment
MONTUORI, Manlio
2011
Abstract
The conservation of structures, intended as refurbishment of deteriorated elements or, more generally, as static and functional rehabilitation of buildings, has always held an important role in the history of construction as the protection of the building heritage appears a fundamental exigency. Furthermore, during the last decades, it has been registered a consistent growth of the number of refurbishment interventions on existing structures. This is due to various reasons, such as: natural ageing of the material; lack of adequate maintenance; designing and construction bad practices. This problem is particularly relevant in the case of plaster and reeds vaults that suffer of deterioration due to biological causes, in addition to mechanical, physical and chemical attacks. Such a biological degradation is closely connected to the external environmental conditions, which, therefore, have a strong influence on the structure durability. Furthermore, wooden centrings structures may present defects (i.e. knots, shakes, shape imperfections, fibre deviations, etc.) and structural anomalies (i.e. cracking, deformations induced by long duration loads, connection degradation, etc.). In addition, the intervention procedures on complex structures are always difficult, due to a series of successive alterations and modifications occurred during their life. In order to correctly focus on such a wide problem, the paper aims to present some consequential considerations, based on the case study of the plaster and reeds vaults, known as volte in arelle, in the Gran Claustro in the Certosa of Ferrara.I documenti in SFERA sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
