Fig. 4
From: A HBIM pipeline for the conservation of large-scale architectural heritage: the city Walls of Pisa
Emblematic features of the city walls: a Bastion San Giorgio (BAS.03) with traces of volumetric expansion and alterations in the wall’s texture; b curtain walls (CUR.01, CUR.02) and tower (TOW.02) showing the linear and regular configuration of the walled system; c curtain wall (CUR.47) and gate (GATE.15) that are partially buried under the street level; d remains of the gate “Porta Buoza” (GATE.16) attesting to the construction techniques of the wall’s section; e Tower Santa Maria (TOW.03) and adjacent curtain wall (CUR.05) from the external side of the walls; f external side of a curtain wall (CUR.12) displaying a full-height vertical crack. The identification codes are defined according to Table 2