Issue 46

A. Maione et alii, Frattura ed Integrità Strutturale, 46 (2018) 240-251; DOI: 10.3221/IGF-ESIS.46.22 248 No-load-bearing vaults composed of timber structure with overlying load-bearing masonry vaults . Examples of this typology are the "Salottino di porcellana" (Fig. 3), the Library near the hexagonal staircase (Fig. 11) and the rooms on the east side of the south court. This typology dates back to the years between 1952 and 1957 [7] and is related to the need of dividing existing large rooms into two smaller ones, or in other cases it was adopted to host decorative furniture coming from other historic buildings. No-load-bearing vaults composed of timber structures with overlying horizontal diaphragms were built to obtain vaulted intrados surfaces similar to their adjacent rooms. This typology mainly characterizes the rooms located in the transversal wings bordering the central court. Examples of this typology are also the vaults of the rooms as "Sala Tiziano" (Fig. 4), "Sala Collezione De Ciccio" (rooms 38-41 in Fig. 2a) and "Sala Armeria" (rooms 46 and 47 in Fig. 2a). A single example of no-load-bearing masonry vault with visible extrados is represented by the vault of the "Sala Camuccini" (Fig. 12), a double height room located at the northeastern corner, opposite to the "Sala della culla". The extrados of this vault is visible from the crawl space where the presence of c.a. beams suggests the intention to realize an overlaying diaphragm as it was for the aforementioned "Sala della culla". Figure 9: Load-bearing masonry vaults. Figure 10: No-load-bearing masonry vaults with overlying horizontal diaphragm: the "Sala della culla". Figure 11: No-load-bearing masonry vault composed of timber skeleton visible from the Library.