Figure 5
Source publication
Non-destructive testing by mean of ground penetrating radar were performed on the wooden elements constituting the roofing of the Cathedral of Foggia. These measurements were related to the restoration work of the roof. Measurements campaign aimed at the assessment of the conservation status of the wooden elements of the all major and secondary ele...
Context in source publication
Context 1
... the data set, several hyperbolic reflections caused by objects of small dimensions such as node (Figure 4) are present, enabling EM wave velocity analysis to be performed [30,31,32]. Figure 5 shows an example of velocity analysis performed on the data set. This represent the interactive velocity adaptation of a diffraction or reflection hyperbola using a hyperbola of defined velocity and width. ...
Similar publications
The church of Santa Chiara with its adjacent convent, whose foundations date back to the 13th century, is a monastic complex in the city of Nardò in the province of Lecce. The current church was built ex novo between the 17th and 18th centuries under the direction of Bishop Orazio Fortunato. Currently, there is no information about the presence of...
Citations
... GPR tests performed on wooden elements insitu are aimed at assessing the state of preservation of timber elements. In the previous studies, GPR was successfully used to evaluate the elements of wooden roofs [30], or floor beams [31]. Halabe et al. [32] used GPR to identify subsurface defects such as knots, decay and metal nails in timber beams that are not visible from the outside. ...
This paper presents the current state of conservation of historic roof churches located in the Żuławy of Gdańsk (Poland). It also describes the architecture of these temples, the region itself and old carpentry techniques for constructing roof trusses. Interdisciplinary tests were carried out in six churches. The geometry of the load bearing structures, the moisture content and the carpentry technique were specified. The field survey also included visual inspections and non-destructive testing of timber structural elements of the roof constructions. The ground penetrating radar and ultrasonic testing methods were used to assess the structure and extent of the damage to the timber elements. The interdisciplinary research presented in this article is important in the planning of historic buildings conservation works and it might be applied to other timber structures.
