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Today, the installation of gas, water, and wastewater pipelines is still predominantly carried out using the open trench installation. In view of the numerous disadvantages associated with this method, it is imperative that in the future trenchless pipeline construction be considered much more strongly as an alternative in the planning and construction of sewers and pipelines. For a better understanding of the complexity of the inner-city subsoil, this module provides a brief introduction to infrastructures in the urban subsoil.

Publisher: Prof. Dr.-Ing. Stein & Partner GmbH, Editorial: STEIN Ingenieure GmbH / 2008

This lecture is part of the 'Trenchless 101' series and provides an overview of horizontal directional drilling (HDD).

Publisher: Prof. Dr.-Ing. Stein & Partner GmbH (2006)

Developed from directional and deep drilling technology, HDD as a steerable drilling method is ideal for the trenchless installation of pipelines. Utilities and communications providers make use of the numerous advantages of this technology, as it provides a customized variant for almost every problem within the scope of its possibilities. However, it is precisely these variants that make it necessary to systematically cover the full range of HDD technology. The book provides valuable guidance and decision support on the topics of equipment, steering and locating techniques, project preparation and planning, structural calculations for the state of construction and operation including: pullback force, buoyancy and ballasting, safety against buckling, pipe stresses, abutment and bedding. Special process developments such as Meeting-in-the-Middle technique, PTT "Push and Pull Technology", COMBI DRILLING method and hybrid systems are described in detail as well as drilling fluids, dry horizontal directional drilling and pipe materials and joints.

Publisher: Prof. Dr.-Ing. Stein & Partner GmbH, Editorial: D. Stein, R. Stein (2013)