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24 search results found .

Jul 16, 2004

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Feb 19, 2013

Achim Kühn

With Pipe Express® the Herrenknecht AG has developed a new semi-trenchless method for installing pipelines. In comparison with the open construction method, routes are considerably narrower, no groundwater lowering is necessary and there is less impact on nature. This has a very positive effect on the grid operators' construction costs.

Jul 01, 2005

Average share of the individual cost groups for the pipe cross sections DN 300 to DN 500 by the open cut method of construction (Milojevic)

Jan 21, 2005

Clear minimum trench widths and nominal diameter DN

Jan 24, 2005

Minimum trench width and trench depth

Jan 21, 2005

Minimum trench widths promulgated in Berlin in the year 1884