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MILESTONE IN THE EXTENSION OF SUBWAY LINE 5

The ARGE U5 Lot 1 team in Munich rea­ched a mile­stone in March 2024 and pro­du­ced the first cover for the exten­sion of the U5 sub­way line to Pasing. Around 900 m³ of con­crete was pou­red in a large-scale con­cre­ting ope­ra­tion. Due to the inner-city con­di­ti­ons and the dif­fi­cult traf­fic access to the con­crete, con­cre­ting was car­ried out all day from 07:00 to 20:00.

In the so-cal­led dia­phragm wall cover con­s­truc­tion method, the cover (the later buil­ding cei­ling) is con­s­truc­ted first and the sides are secu­red with a dia­phragm wall. Excava­tion then takes place under the pro­tec­tion of this cover. This con­s­truc­tion method has pro­ved its worth in Munich for large road tun­nels, as it means that traf­fic can be main­tai­ned above ground for the most part. This method is now being used again here for sub­way construction.