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Denlok™ jacking pipe has had extensive success in Germany. The Marzahn Psychiatric Hospital in 1995 was undergoing a significant expansion and improvement of facilities. Marzahn is an area of the former East Berlin. Denlok™ Advantages:
Pedestrian security was an important advantage of microtunneling. Locked security fences were constructed around the shafts during times of construction inactivity. The soils were typically sandy clays. Slurry type microtunneling machines were selected
and provided for good productivity and a successful project. Photograph -
Above: Photograph -
Above:
Photograph - Bottom:
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DN400 and
DN500 (500mm, 20 inch) Denlok™ pipe was chosen for this important
project. Microtunneling provided a compatible method suitable to the tight site conditions
and the continuous operation of the existing facilities. 
