Thank you for viewing. This is a set of two books: "Design Standards and Commentary for Railway Structures, etc., January 2023, Part I: Basic Principles / Part II: Bridges" and "Part IV: Bearing Structures." I used to work as a railway consultant, but I have retired and no longer need these books, so I am selling them. I bought them during my consulting days so I could work remotely, but I didn't end up using them much, so they are in relatively good condition. There is a faded mark from a personal label on the spine of the bridge section. Other than that, there are no noticeable tears, damage, or writing, but please understand that these are items that have been stored for a long time. If you are not too concerned about them being used, please consider purchasing them. Thank you. "Design Standards and Commentary for Railway Structures, etc. (Concrete Structures) -- Part I: Basic Principles / Part II: Bridges," January 2023 Ministry of Land, Infrastructure, Transport and Tourism Railway Bureau / Railway Technical Research Institute Price: ¥13,000 "Design Standards and Commentary for Railway Structures, etc. (Concrete Structures) -- Part IV: Bearing Structures," January 2023 Ministry of Land, Infrastructure, Transport and Tourism Railway Bureau / Railway Technical Research Institute Price: ¥7,700 #Ministry of Land, Infrastructure, Transport and Tourism Railway Bureau #Railway Technical Research Institute #Railway Technical Research Institute #book #Civil Engineering/Architecture/Civil Engineering #Professional Engineer