Official, current versions are copyrighted and typically require purchase from authorized distributors. You can find the official DIN 19704-1 (2014-11) on the DIN Media portal or through the ANSI Webstore . Standard Parts
This guide provides an overview of the standard, which governs the design and construction of hydraulic steel structures
, such as lock gates, weirs, and penstocks. Because these standards are protected by copyright, they are not typically available for free legal download via direct public links. Accessing DIN 19704
Without the official PDF, you cannot legally certify a structure. Civil engineering firms, TÜV inspectors, and water authorities will demand proof that your calculations follow the official, purchased standard.