BE-08 - Replacement of water, wastewater and gaspipelines

This course includes tutorial services and a final examination.

Replacement refers to the installation of new water, wastewater and gaspipelines in place of existing pipelines, where the new pipeline takes over the functions of the old water, wastewater and gaspipelines. The replacement process is subdivided into three methods: "open cut method", "semi open cut method" and "trenchless method". The focus of this module is the trenchless replacement method of pipelines by the means of pipe bursting, gallery techniques, and pipe extraction.

In addition to the replacement method and process description this module discusses the areas of application and limits, the advantages and disadvantages as well as possible rehabilitation errors and options for quality assurance.

The course presents this knowledge in 7 modules:

1. Pipe bursting basics
2. Pipe bursting
3. The welding of plastic pipes
4. Pullback of pipelines
5. Gallery techniques
6. Pipe extraction
7. Geotechnical and hydrogeological principles

Upon the successful completion of this module you will be able to: • identify and implement the most important rules and specifications; • identify the replacement methods areas of application, limitations as well as advantages and disadvantages. • identify possible causes of errors and describe quality assurance measures • select the appropriate replacement methods based on the type of damage and limiting conditions • identify influences effecting the extension or reduction of the useful service life of the new pipeline • identify possible for quality checks and measures for the protection of the new pipeline • identify the effects of pipe bursting on the surrounding environment and from that calculate the required minimum distances to the adjacent utilities and structures • identify methods of tensile force control and restriction • differentiate between soil types, to identify the influence of the grain shape and grain size distribution on the practical construction characteristics of the subsoil, to assess the ground state with respect to its bulk density and consistency and to derive key soil condition indicators; • identify the different forms of water in the subsurface, to understand the movement of unbound water in the subsoil and to determine the water permeability of the soil for a structural engineering assessment ; • dimension the pipeline insertion pit; calculate the pulling forces and the maximum bending radii of the pipeline. • classify plastics in relation to their weldability in thermoplastics, elastomers and thermosets • identify the influence of the density (crystallinity) of thermoplastics in terms of strength, stiffness, chemical resistance and impact strength. • identify properties of polyethylene, and the advantages resulting therefrom • differentiate between the various welding processes and to identify their areas of application • identify the factors effecting the weld quality and their consequences • identify possible errors during welding and understand their consequences on the quality

This course is offered by the Prof. Dr.-Ing. Stein & Partner GmbH (Bochum) and S & P Consult GmbH (Bochum) in cooperation with S & P Consult GmbH is a consulting engineering firm specialising in trenchless pipeline installation, rehabilitation and maintenance, as well as environmental technology. We are a subsidiary of Prof. Dr.-Ing. Stein & Partner GmbH.

Prof. Dr.-Ing. Stein provided essential foundations for a sustained management of drainage systems, as well as for trenchless installations of pipelines and their rehabilitation and maintenance. S & P has its focus on this tradition and its intertwined objectives, as e.g. environmental protection, improved underground supply and disposal infrastructures - and with that an improved quality of life in our cities.

The complexity of this task requires interdisciplinary solutions. Our team of highly qualified professionals at S & P is at your disposal. Our know-how in planning, construction, operation, maintenance, rehabilitation and management of water supply and disposal networks, as well as the mastery of all trenchless installation methods and pipeline rehabilitation are the key to our success.

In addition to consulting services and practice-oriented solutions we initiate and support a multitude of research and development projects. We advise and assist owners and operators in all fields of rehabilitation and maintenance management of their supply and disposal networks.

The visaplan GmbH, a subsidiary of Prof. Dr.-Ing. Stein & Partner GmbH, is your service provider for e-learning and knowledge transfer in the construction sector! Whether web-based product training, technical skills training, mathematical tools or sustainable education and training, visaplan GmbH and UNITRACC are the construction sectors leading concept and solution providers for web-based teaching and learning, particular in the field of underground infrastructure.

By combining experts from the fields of engineering, computer science and media development, we are able to offer all of the building blocks necessary for e-learning and knowledge management in the construction industry.


Beginner to advance


30 hours within 4 weeks


700.00 EUR plus VAT