PSI - Issue 28

M.L. Puppio et al. / Procedia Structural Integrity 28 (2020) 330–343 Puppio M.L. et al/ Structural Integrity Procedia 00 (2020) 000–000

338

9

Fig. 12. DEM of Volterra with level curves and the Volterra urban walls (red line).

Fig. 13. Map of the slope by DEM throughout the Q-GIS software.

Each vertical section in Fig. 10 is identified by a vector tangent and a vector orthogonal to the curve. Along the orthogonal one the relative slope from DEM is calculated (Fig. 13).