1. CEN. Eurocode 2: Design of concrete structures - Part 1-1: General rules and rules for buildings (CEN, 2004).
2. General Directorate for National Roads and Highways. Instructions for conducting inspections of road engineering structures. Annex to Order No. 35 General Director of Roads National Highways and Motorways dated September 28, 2020 (General Directorate for National Roads and Highways, 2020).
3. Rymsza, J., Biliszczuk, J. & Mistewicz, M. WR-M-81 Guidelines for assessing the technical condition of road engineering structures (in Polish) (2021).
4. Polish State Railway. Id-16 Instructions for maintenance of railway engineering facilities on railway lines up to a speed of 200/250 km/h (in Polish) 2014 (Polish State Railway, 2014).
5. Highways England. CS 450 Inspection of highway structures (Highways England, 2020).