2015DIN EN 124-1:2015 Gully tops and manhole tops for vehicular and pedestrian areas - Part 1: Definitions, classification, general principles of design, performance requirements and test methods; German version EN 124-1:2015
1994DIN EN 124:1994 Gully tops and manhole tops for vehicular and pedestrian areas - Design requirements, testing, marking, quality control; German version EN 124:1994