PSI - Issue 62

Ettore De La Grennelais et al. / Procedia Structural Integrity 62 (2024) 1089–1096 Author name / Structural Integrity Procedia 00 (2019) 000 – 000

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4. Inspection activities - level 1 The tunnel inspection activity, both remotely and in contact, involves the use of specialized platforms to conduct a thorough examination of structural elements, the road platform, and associated systems. Each structure undergoes a close inspection, during which structural and non-structural components are examined in detail.

Fig. 4. Typical tunnel inspection activity.

Fig. 5. Typical Lev.1 file for tunnel inspection.