The paper presents various examples of the application of the PAK software and its modules for thermal, filtration, and stress–strain analysis of different complex engineering structures such as gravity dams, arch dams, embankment dams, tunnels, and mines. Examples of research, studies, and projects in which PAK has been applied to assess the condition of various structures are provided. Special emphasis is placed on the application of PAK for modeling thermal, filtration, and stress–strain processes at the gravity dam, Iron Gate I Dam, and the arch dam, Grančarevo. PAK has been successfully used for a long time on these structures as part of the Dam Safety Management System, providing the basis for various analyses and reports on the assessment of dam condition and safety.
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