PSI - Issue 29

Mauro Sassu et al. / Procedia Structural Integrity 29 (2020) 8–15 Mauro Sassu / Structural Integrity Procedia 00 (2019) 000 – 000

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The re-constructionof the main ga te, made by large regular blocks, involved anactivity similar to the composition of a puzzle. Each stone was surveyed and virtually replaced to simulate thebest location, in viewto a proper replace.

Fig. 6. Re-construction of the main gate in Al Balid city walls.

The replacement of the columns in the Grea t Mosque held in 2008 followed the principle of limiting the re constructionby only thestones available in the nearby, respect to the approachused in 2001 (Fig.7)

Fig. 7. Replacement of columns: (left) the approach in 2001, (right) the approach in 2008 (Great Mosque in Al Balid).

The last example is loca ted in Shawbak Castle, in the UNESCO Petra site (Jordan). The archaeological consolidation design is devoted to conserve the original features of the several types of walls. Each typology reflects the culture of the communities that lived in the Castle. Starting from Roman period (II A.D.) in which large regular wa lls showed a military organization, the further periods were characterized by poor technology, like the Christian Crusades (XII A.D.), andmore rich occupations, as the Ayyubid,MamlukandOttman communities.

Fig. 8. The Shawbak Castle in the great Petra area (Jordan).