Issue 45

F. Brandão et alii, Frattura ed Integrità Strutturale, 45 (2018) 14-32; DOI: 10.3221/IGF-ESIS.45.02 25 found. In the walls of the north lateral façade and the wall of the east façade it can be observed traction zones of 0.07 MPa. The minimum principal stresses (negative values indicates as usual compression stress) are represented in Fig. 15.(c) and 15. (d). Values of about 0.11 MPa can be identified in correspondence of the connection of the wall of the south lat- eral façade with the wall of a smaller arc located in the rear of the lateral nave. This value is lower than the one obtained with the static analysis (whose value was about 0.69 MPa). These compressive stresses are lower than the assumed com- pressive strength of the clay brick. However, in other regions of the structure compression stresses were observed, name- ly: i) the wall of the main west façade and the wall of the north lateral façade, approximately 0.06 MPa; ii) some regions of the wall of north lateral façade, where the stress is between 0.10 MPa to 0.03 MPa. Figure 15 : Principal stress after Earthquake 1: (a) and (b) maximum principal stress; (c) and (d) minimum principal stress. Unit in MPa. Figure 16 : Peak of the maximum principal stress during Earthquake 1. Unit in MPa. Figure 17 : Peak of minimum principal stress during Earthquake 1. Unit in MPa. (a) (b) (c) (d)