List of products by author: W. Dolsak

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  Development of Innovative Connections for Pipe Umbrella Support Systems

  Abstract: Pipe umbrella support systems have been used successfully for tunneling in challenging ground conditions since the 1970’s. Historically, the drilling unit was the limiting factor for pipe umbrella installations - less attention has been paid to pipe couplings and their influence on labor time and load-bearing capacity. The present paper describes the development of two new alternative...

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