DIN EN 124-1-2015 机动车辆和/或行人区域的水沟顶部和人孔顶部. 第1部分: 定义, 分类, 通用设计原则, 性能要求和试验方法; 德文版本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