Essential changes in the new DAfStb‐Guideline on watertight concrete structures 2017
he DAfStb‐Guideline on watertight concrete structures (WU‐Guideline) of 2003 has been reviewed and is finished as new issue in 2017. In this process the gathered experiences and new knowledge has been considered.
Essential changes and additions in the WU‐Guideline are the required design steps, an informative annex for coordination of the responsibilty for design parts, the introduction of rules for watertight concrete roofs, the using conditions of the design principles, increased requirements for design principle (b) with self‐healing of cracks and also for watertight element walls and the improvement of the readability and understandability as well as refined obligations of documentation. The use of the WU‐Guideline for high‐grade used basements requires a rethinking by using the design principles from calculating to construction with lower imposed deformations.