DIN V 1202-2004
废水运输用非加筋、钢纤维和加筋混凝土制成的管道系统和人孔.承载能力的设计、验证以及使用和安装的适用性
Pipes systems and manhole woks made of concrete, unreinforced, steel fibre and reinforced for the conveyance of waste water - Design, proof of load bearing capacity and fitness for use, installation
