DIN 1264:2002DIN V 1264-1:1993DIN 1264-2:1990DIN V 1264-3:1993
DIN V 1264:2003 history
2003DIN V 1264:2003-04 Steps for underground man entry chambers - Application in construction works for wastewater disposal / Note: Applies in conjunction with DIN EN 13101 (2003-04).
2003DIN EN 13101:2003 Steps for underground man entry chambers - Requirements, marking, testing and evaluation of conformity; German version EN 13101:2002