On November 19, 2024, the “SiWa Lecture Seminar: Practical Application” took place in the Department of Wastewater and Waste Management during the 12:30–3:00 p.m. lecture period. This free format, which is closely aligned with the lectures and can be held once (or at most twice) per semester course, is designed to address course content that goes beyond the original lecture module taught by Prof. Görg, or to complement it well from other perspectives and/or where the participation of external experts and practitioners is considered beneficial.

The initiative kicked off in the winter semester of 2024/2025 in the Urban Water Management module (Bachelor’s Specialization B5) with the topic “Wastewater Discharge Using Welded Plastic Systems: The R.O.S.A. Case Study,” featuring an external speaker and a practical demonstration. The subject matter fit well into either Lecture Unit “No. 9: Pipe Materials, Cross-Sections, Special Structures” or “No. 10: Construction and Operation of Sewer Systems.”

Details regarding the schedule, content, and registration (for those interested) can be found in the information sheet.

The approximately 20 participants—comprising university students and practicing engineers—enjoyed an engaging and interesting program on a current construction and environmental topic, featuring an in-depth technical presentation and practical demonstrations. The watertightness of sewer systems is particularly significant—especially in a legal context—at nearly every stage of urban water management and is inevitably relevant to preventing unacceptable environmental impacts. 

The documentation, which includes thermal images, explains the process of “electrofusion welding” for polypropylene (PP) plastic pipes! It clearly illustrates the thermoplastic material behavior of the welding ring inserted into the groove of the socket joint and of the pipe itself. After allowing for the cooling times, the pipe joint is ready for use and leak-tight within a few minutes (tested in accordance with DIN EN 1610). The unique feature of the process shown lies in the use of KG2000 pipes (green), which can be used on civil engineering sites both as push-fit sleeves with sealing rings and in the aforementioned “welded” system. 

Welding of a KG2000 PP pipe DN (OD) 160 (Ostendorf / R.O.S.A., photo credit: A. Krüger)

The DAAD Alumni Summer School in April 2020, which was planned in collaboration with ZEW/CICD (Prof. Dr. Roth) and had already been approved, has unfortunately been "canceled" due to current circumstances.

DAAD Alumni Special Project 2019:

In collaboration with the Center for International Capacity Development (CICD) (Prof. Dr. Roth), the Wastewater and Waste Management Technology Division is organizing the DAAD Alumni Summer School in conjunction with IFAT India 2019 from October 8–19, 2019. A seminar program in Kochi will be followed by a joint visit to the IFAT India trade fair in Mumbai. Twenty water experts from Southeast Asia will participate. 

For questions regarding the program: R. Winnegge 0271 740-3394 ruger.winnegge@uni-siegen.de
                                                A. Krüger 0271 740-2186 alexander.krueger@uni-siegen.de

DAAD Alumni Special Project 2018:

In collaboration with the Chair of Water Management Risk Assessment and Climate Impact Research (Prof. Reggiani), the Department of Wastewater and Waste Management Technology organized the international DAAD Alumni Summer School in conjunction with IFAT 2018 in Siegen and Munich.

The seminar focused on the safe and complete transport of water in water supply and wastewater disposal systems.

Press Release: DAAD Summer School from May 7 to May 18, 2018, at the University of Siegen

Multilateral knowledge exchange and innovative technology transfer with 25 water and wastewater experts from 23 countries across 4 continents. As one of two universities in Germany, the University of Siegen’s application was selected in the DAAD call for proposals for an international alumni summer school in conjunction with the IFAT trade fair. The summer school is organized by the Chairs of Water Management Risk Assessment and Climate Impact Research (Prof. Paolo Reggiani, PhD) and Wastewater and Waste Technology (Prof. Horst Görg, Dr.-Ing.).

The announcement that drinking water in Cape Town (South Africa) would have to be reduced to 50 liters per resident shocked the public at the beginning of 2018. If the drought persists, there is even a risk that the metropolitan area’s central public water supply could be completely shut down in the short term on “Day Zero.” South Africa’s water scarcity poses a social time bomb. This current example shows that even the comparatively more developed regions of Africa face immense water problems. Many other countries on the continent have far poorer infrastructure, which makes it extremely difficult to achieve a decent standard of living in these nations—often among the poorest in the world. The situation in many countries in Asia and in South and Central America is similar to that in Africa. Although piped water and sewage systems are in place in many areas, the distances from safe water sources to the ever-expanding consumption areas and megacities are growing ever longer. Furthermore, the quantity of natural, uncontaminated, and available water resources is limited to specific areas and is constantly threatened by pollution. At the same time, the dilapidated condition of the pipeline networks leads to a decline in water quality, which results in the spread of disease or a massive increase in water loss rates. Intact, leak-proof sewer systems are needed to ensure the safe and complete transport of the resulting—often highly hazardous—wastewater to treatment plants. This is essential for human survival for both health and environmental reasons. However, infrastructure is subject to constant change. Regional disparities between urban centers and rural areas influence technical progress. Not least, the enormous demographic shifts—with their social consequences—and the severe impacts of climate change, particularly in developing and emerging economies, are creating increasing challenges in the water sector. Scientists, specialists, and leaders are needed to find appropriate, innovative, and well-founded solutions for their respective regions—solutions that are also practical, sustainable, and particularly future-proof.

For this reason, the University of Siegen is organizing a two-week, international DAAD summer school, which begins with a one-week seminar in Siegen and concludes with a visit to IFAT, the world’s leading trade fair for water, wastewater, waste, and raw materials management, in Munich. With a focus on “Water Transport in Water Supply and Waste Management,” the summer school is designed to facilitate an interdisciplinary exchange of experiences, targeted technology transfer, and the continuing education of qualified professionals. Accordingly, the group of participants is diverse, comprising scientists, representatives from non-governmental organizations, consultants, and municipal water and waste management companies. In addition to technical expertise, a broad-based program is designed to promote interaction (group work) among the participants. Practical relevance is ensured, on the one hand, through presentations by external experts (regional companies, engineering firms). On the other hand, practical insights can be gained both through a plant tour at Mannesmann Line-Pipe GmbH and through an excursion to the Breitenbach Dam and the drinking water treatment plant of the Siegen-Wittgenstein Water Association. Here, participants can gain a clear understanding of how tap water is produced—water that is safe to drink from every faucet in Siegen.

Academic Director:

Prof. Dr. Paolo Reggiani
Prof. Dr.-Ing. Horst Görg

For further information:

Dipl.-Ing. I. Althoff, Tel. +49 271 740-3178, e-mail: ingrid.althoff@uni-siegen.de
Dipl.-Ing. A. Krüger, Tel. +49 271 740-2186, email: alexander.krueger@uni-siegen.de 

In collaboration with the Center for International Capacity Development (CICD, directed by Prof. Roth), the Department of Wastewater and Waste Management Technology organized the international DAAD Alumni Summer School in conjunction with IFAT Africa 2017 in Johannesburg.

The seminar, along with the trade show visit, was a great success for all participants. 

Background information (press release):

Water experts from Africa and the University of Siegen sign the Johannesburg Declaration.

The Center for International Capacity Development (CICD) and the Department of Wastewater and Waste Management organized the international DAAD Alumni Summer School “Efficient Water Use – Waste and Wastewater Management” from September 5–11, 2017, in Johannesburg. This was followed by a joint visit to the international trade fair IFAT Africa 2017. The event culminated in the Johannesburg Declaration by international scientists.

Wastewater and waste are nearly equally significant in terms of their fundamental environmental impact. If mishandled, natural (limited) resources such as water and soil can be damaged, in some cases irreparably, with devastating consequences for ecosystems and, not least, for public health. This is accompanied by heterogeneous trends in demographics and climate, constant changes in products and resources, and societal transformation. Growing megacities, increasing migration, and shifting consumer behavior—as well as an ever-greater need for action in vulnerable environmental areas—are presenting professionals with an increasing number of new challenges. The unique characteristics of the African continent, socioeconomic factors, and regional disparities in infrastructure and climate make it difficult to identify suitable strategies there. In this context, it is not only technical tools that are important, but also a mindset that views environmental protection as a participatory and societal task and opportunity.

The Federal Ministry for Economic Cooperation and Development (BMZ) has designated 2017 as the “Year of Africa.” Key elements for a Marshall Plan for Africa have already been outlined by the ministry. The field of water-related environmental technology is of particular importance in this context. The BMZ states: “Without clean water and basic sanitation, people in Africa have no chance of overcoming some of their worst problems—such as high infant mortality. Every day in Africa, many children, women, and men die from diseases caused by unsafe water—diseases that could easily be prevented through a hygienic water supply. Water is also an indispensable resource for agriculture and industrial development in sub-Saharan Africa.” (Source: BMZ, 2016).

Against this backdrop, the University of Siegen, together with the Center for Research on Developing Countries and Knowledge Transfer (ZEW) and the Department of Wastewater and Waste Management, organized an international alumni expert seminar in South Africa, which was funded by the German Academic Exchange Service (DAAD) with funds from the Federal Ministry for Economic Cooperation and Development. The 15 participating alumni came from all parts of the African continent. Thanks to their solid scientific training in Germany, they were able to present the challenges in their home countries from a technical perspective during the summer school, exchange ideas on approaches, and discuss the applicability of these solutions to their respective countries and regions. The outcome of the academic seminar—which included field trips and a visit to IFAT Africa, the leading environmental trade fair—is the Johannesburg Declaration. This declaration by the 15 African scientists and the four members from the University of Siegen reaffirms the shared commitment of the newly founded APIWEC initiative (“THE AFRICAN PROFESSIONALS’ INITIATIVE FOR WATER, ENERGY, ENVIRONMENT AND CLIMATE”), to jointly find sustainable solutions for the water sector on the African continent. The formation of a network, the transfer of technical know-how, and the widespread application of innovative processes and new products are key points of the declaration. The goal is to promote interdisciplinary activities among the initiative’s members in the future and to intensify multilateral cooperation between countries, thereby ensuring sound continuity and sustainable development in the exchange of knowledge and technology

Scientific Director: Prof. Dr.-Ing. Hubert Roth 
                                               Prof. Dr.-Ing. Horst Görg

For inquiries regarding content: R. Winnegge 0271 740-3394 ruger.winnegge@uni-siegen.de
                                                A. Krüger 0271 740-2186 alexander.krueger@uni-siegen.de

DAAD Summer School from May 22 to June 4, 2016, at the University of Siegen 

Multilateral knowledge exchange and innovative technology transfer: 25 water and wastewater experts from 22 countries and 4 continents will gather at the University of Siegen. As one of only two universities in Germany, the University of Siegen’s proposal was selected in the DAAD call for proposals for an international alumni summer school in conjunction with the IFAT trade fair. The summer school is organized by the Chairs of Water Management Risk Assessment and Climate Impact Research (Prof. Paolo Reggiani, PhD) and the Chair of Wastewater and Waste Management Technology (Prof. Horst Görg, Dr.-Ing.). 

There is a fundamental need to improve the situation in the water sector in many parts of the world. Although countries differ significantly from one another in terms of both their level of development and the nature and scope of their water management challenges, deficits are particularly evident in countries in Africa, Asia, Latin America, the Arabic-speaking world, and Eastern Europe. Inadequate or absent wastewater treatment places a strain on the water cycle. An increase in polluted wastewater leads to the spread of dangerous infectious diseases. A link to the degradation of ecosystems—particularly the reduction of biological diversity in water bodies—appears evident. Climate-related changes affecting the water sector and demographic trends present society with new challenges. At the same time, infrastructure is undergoing constant change, characterized by technological progress, social issues, and regional disparities. Far-reaching solutions, coordinated strategies, and regulatory measures are needed that are both practicable in urban areas and implementable in rural regions, and that hold the promise of permanently eliminating deficiencies in the sanitation sector. Innovative methods are being put to the test to protect the already limited available water resources from excessive pollution.

The two-week, international DAAD Summer School—which begins with a one-week seminar at the University of Siegen and concludes with a visit to the world’s leading trade fair for water, wastewater, Waste, and Raw Materials Management (IFAT) in Munich, is designed to facilitate an interdisciplinary exchange of experiences, targeted technology transfer, and the continuing education of qualified professionals. The range of participants is correspondingly broad: scientists, non-governmental organizations, and consultants are represented alongside wastewater treatment plant operators. In addition to technical expertise, a wide-ranging program designed to foster interaction among participants is planned. The wastewater treatment system—which begins with the generation of wastewater and ends with the environmentally sound reintegration of treated wastewater into the natural water cycle—serves as a common thread running through the program. Topics include, among others, Wastewater discharge (heavy rainfall), wastewater treatment using innovative processes or small-scale treatment plants, industrial wastewater, wastewater reuse (sewage sludge), as well as organizational issues ranging from fee collection to water quality and resource management as overarching topics. Practical relevance is ensured both through presentations by external experts (regional companies, engineering firms) and through a field trip to the wastewater treatment plant operated by the City of Siegen (ESI). Here, participants can gain a clear understanding of how environmental requirements can be met in the day-to-day operation of the plant. The lecture series thus serves to foster networking and to provide thorough preparation for the trade fair visit, which takes place afterward in collaboration with the departments at the University of Siegen. The results of the summer school will be published (after peer review), giving participants a good opportunity to establish their academic profile.

For further information:

Dipl.-Ing. I. Althoff, Tel. +49 271 740-3178, e-mail: ingrid.althoff@uni-siegen.de
Dipl.-Ing. A. Krüger, Tel. +49 271 740-2186, e-mail: alexander.krueger@uni-siegen.de

8th SGL 2013 | Insight | Overview | Outlook

Program

1:00 PM – 1:05 PM Opening of the conference by Prof. Dr.-Ing. H. Görg
1:05 PM – 1:30 PM Prof. Dr.-Ing. H. Görg, University of Siegen, Siegen: “Trenchless Construction—More Than Just Underground”
1:30 PM – 2:00 PM Networking Reception – Light Refreshments – Opening of the Trade Exhibition

SESSION I – Site Drainage: Postponed Does Not Mean Canceled

Moderator: Dipl. Ing. S. Beck, IKT Gelsenkirchen
2:00 – 2:30 p.m. Dipl.-Ing. M. Müller, Technische Betriebe Solingen, Solingen: “Consequences of Failing to Carry Out Renovation Measures on Private Properties”
2:30 PM – 3:00 PM Dipl.-Ing. C. Externbrink, Stadtbetrieb Abwasserbeseitigung Lünen AöR: “Regulations on Property Drainage – Current Status”
3:00 PM – 3:30 PM Dipl.-Ing. F. Hartmann, Kanalcheck 7 GmbH, Neunkirchen-Seelscheid: “Old Mistakes in New Property Drainage Systems—How to Avoid Them?”
3:30 – 4:00 p.m. Coffee break – Trade exhibition
Forum: “Characteristics and Limitations of Rehabilitation Methods: From Planning to the Final Structure”

SESSION II - Planning Pitfalls | Experts Answer Your Questions

Moderator: Prof. Dr. Ing. H. Görg
4:00 – 4:15 p.m. H. Zech, RSV, Lingen (Ems): “111 x Trenchless: A (Brief) Overview of Sewer Rehabilitation Methods and Variants”
4:15 – 4:30 p.m. Dipl.-Ing. W. Bezela, Pipefocus Engineering Firm, Krefeld: “Limitations of Standard Methods with Typical Diameters”
4:30 – 4:45 p.m. M. Brenner, Dipl.-Ing., Brenner GmbH Engineering Firm, Hennef: “How to Achieve Professional Quality from Planning to Acceptance”
4:45 – 5:00 p.m. Discussion and exchange of experiences regarding decision-making, practical selection criteria, and process-related limitations

SESSION III - Pitfalls in Construction | Experts Answer Your Questions

Moderator: Prof. Dr. Ing. H. Görg
5:00 – 5:15 p.m. Dipl.-Ing. J. Brunecker, Insituform Rohrsanierungstechniken GmbH, Röthenbach: “Renovation with Pipe Liners”
5:15 PM – 5:30 PM Dipl.-Ing. S. Schwarzer, TRACTO-TECHNIK, Lennestadt: “Variations in Pipe Rehabilitation Techniques”
5:30 – 5:45 p.m. J. Franke, Dipl.-Ing., egeplast international GmbH, Greven: “Pipe Materials for Trenchless Pipe Rehabilitation”
5:45 – 6:00 p.m. Discussion and exchange of experiences regarding pipe materials, properties, and installation, as well as job site conditions and special applications
Starting at 7:00 p.m. Evening event as a discussion evening at the brewery (Sudwerk Irle-Brauerei); a free shuttle bus service to the hotel is provided.

SESSION IV - Cost-Benefit Analysis

Moderator: Prof. Dr.-Ing. H. Görg
9:00 – 9:30 Prof. Dr.-Ing. R. F. Schmidtke, Engineering Consultant, Planegg: “Practical Application of Service Life in Cost Comparison Analyses”
9:30–10:00 Dipl.-Ing. M. Hippe, Franz Fischer Ingenieurbüro GmbH, Erftstadt: “Practical Application of Cost-Comparison Analyses in Sewer Rehabilitation”
10:00 a.m. – 10:30 a.m. Coffee break – Trade exhibition

SESSION V – Challenges in Water Management

Moderator: Prof. Dr.-Ing. H. Görg
10:30–11:00 M. Hochbein, Dipl.-Ing./MBA, Gelsenwasser AG, Gelsenkirchen: “The Impact of Demographics on Pipeline Construction and Rehabilitation in the Drinking Water Sector”
11:00–11:30 Dr.-Ing. H.-C. Sorge, IWW Zentrum Wasser, Mülheim: “Flexibility of Water Supply Systems in Light of Climate Change”

SESSION VI – Sewer Rehabilitation under Special Construction Site Conditions

Moderator: Prof. Dr.-Ing. H. Görg
11:30 a.m.–12:00 p.m. Dipl.-Ing. D. Löwe, bds Boden- und Deponie-Sanierungs-GmbH, Neufahrn: “Pipe Replacement Under Extreme (Construction Site) Conditions”
12:00 – 12:30 Dipl.-Ing. W. Weßing and Dipl.-Ing. D. Hanselmann, E.ON New Build & Technology, Gelsenkirchen: “Trenchless House Connection Techniques for Existing Buildings”
12:30–3:30 p.m. Keyhole technology in practical application, including a light meal

Contact and Information: 

Alexander Krüger 

krueger@bauwesen.uni-siegen.de

0049 (0)271 740-2186

Presentations - Conference Proceedings - Program

BLOCK A: “Sewers”   

• Direct and Indirect Costs as a Decision-Making Tool for Selecting Construction Methods in Pipeline Construction
  Leopold Scheuble, M.Eng., Infrastructure Consulting, 76344 Eggenstein-Leopoldshafen
• Repair, Renovation, and Replacement—What Pays Off and When!
  Prof. Dr.-Ing. Horst Görg, University of Siegen, Department of Civil Engineering, 57076 Siegen

BLOCK B: “Costs and Economic Efficiency”    

• VOB: Tendering in Accordance with the New ATV DIN 18326 for Sewer Renovation Work
  Dipl.-Ing. Detlev Drobny, Stuttgart Civil Engineering Office, 70176 Stuttgart
• Cost Pitfalls in the Planning and Execution of Rehabilitation Projects
  Dr.-Ing. Robert Stein, S & P Consult GmbH, 44801 Bochum

BLOCK C: “Structures in Wastewater Systems”   

• Renovation of Structures and Manholes in Drainage Systems
  Burkhard Malcus, Dipl.-Ing., DIRINGER&SCHEIDEL ROHRSANIERUNG GmbH & Co. KG, 68199 Mannheim
• The New RSV Technical Bulletin M6.2—Manhole Rehabilitation
  Wolf-Michael Sturm, Michael Sturm Expert Services, D-13351 Berlin
• “SCHABE” Manhole Assessment Database
  Juliane Schenk, M.Eng., Göttingen Waste Management Services, 37079 Göttingen 

BLOCK D: “Pipe Materials and Applications”    

• Innovations for Trenchless Pipeline Construction: Whether Plow or Jettison Drilling Methods—It All Comes Down to the Right Casing 
  Dipl.-Ing. Torsten Schmidt, Salzgitter Mannesmann Line Pipe GmbH, 57074 Siegen
• High-Pressure Plastic Pipes for Trenchless Installation—Features and Application Examples
  Dipl.-Ing. Holger Hesse, Egeplast Werner Strumann GmbH & Co. KG, 48268 Greven
• Press-Pulling Method with Soil Removal
  Franz Schaffarzyk, Dipl.-Ing., Josef Pfaffinger Construction Company, Berlin Branch, 3595 Berlin

BLOCK E: “Property Drainage”    

• Drainage: Tolerate, Shut Off, or Redirect?
  Dipl.-Ing. Amelie Dyrbusch, IKT - Institute for Underground Infrastructure gGmbH, 45886 Gelsenkirchen 
• Holistic Strategies, Systematics, and Flexibility in Property Drainage
  Frank Werner Grauvogel, M.Eng., Burscheid Municipal Utilities
• New Construction and Rehabilitation of High-Pressure Pipes
  Dipl.-Ing. Sebastian Schwarzer, Tracto Technik, 57368 Lennestadt

SESSION F: “Water/Gas Service Lines”    

• Keyhole technology for service connections: New installation with GRUNDOPIT; renewal with GRUNDOTUGGER
  Elmar Koch, M.Eng., Tracto Technik, 57368 Lennestadt
• Proper Sealing of Gas and Water Service Connections
  Horst Scheuring, Dipl.-Ing., Hauff-Technik GmbH & Co. KG, 89542 Herbrechtingen
• Service Connections: Rehabilitate or Replace?
  Horst Zech, M.A. in Economics, RSV - Rohrleitungssanierungsverband e. V., 49811 Lingen (Ems)

SESSION G: “Energy, the Future, and Innovation”    

• Heat Recovery from Sewer Lines 
  Mike Böge, Dipl.-Ing., Institute for Pipeline Construction at Oldenburg University of Applied Sciences e.V., 26121 Oldenburg 
• Implementation of the City of Schmallenberg’s Climate Protection Plan
  Helmut Hentschel, City of Schmallenberg, 57392 Schmallenberg
• The Ebbinghof Bio-Village—Energy Self-Sufficient with Biogas
  Hubertus Peitz, the Peitz family, 57392 Schmallenberg
• Energy Transition and Grids
  Dipl.-Phil. Karl-Heinz Pfündner, Bildungswerk BAU Hessen-Thüringen e. V., 99096 Erfurt

BLOCK H: “Utility Networks”   

• Connections, Material Transitions, and Repair Methods in Water Supply Networks 
  Jan Treiber, M.Eng., Friatec AG, 68229 Mannheim
• Cleaning as a Measure for the Safe Operation of Pipelines
  Dr. Norbert Klein, Hammann GmbH, 76855 Annweiler am Trifels

Contact and Information: 

Alexander Krüger 

krueger@bauwesen.uni-siegen.de

0049 (0)271 740-2186

Program and Information

Block A: “Wastewater Technology”

• Prospects for Pipeline Construction in Roads and on Private Property—Toward a Trenchless Future?
  Prof. Dr.-Ing. Horst Görg, University of Siegen, 57068 Siegen
• Pipe Rehabilitation Methods Through the Ages—Where Do We Stand Today?
  Markus Mendek, MBS Construction and Appraisal Office, Ravensburg
• Utilizing the annular space between the liner and the existing pipe to collect and drain extraneous water: The example of Oststraße in Borgholzhausen
  Dipl.-Ing. Wilhelm Röper, Röper Engineering Office, 49326 Melle

Block B: “Pressure Pipelines”

• The Relationship Between Road Condition and Trenchless Pipe Rehabilitation with Regard to Long Service Life and Optimal Value Creation
  Dipl.-Ing. Jan Birbaum, University of Siegen, 57068 Siegen
  Alexander Krüger, M.Eng., University of Siegen, 57068 Siegen
• Trenchless Gas Service Connections—A Technical Alternative for Existing Buildings?
  Werner Wessing, M.Eng., EON Ruhrgas AG, 45131 Essen
• Environmentally Friendly and Sustainable Rehabilitation of Pressurized Pipelines 
  Prof. Dr.-Ing. Harald Roscher, Erfurt University of Applied Sciences, 99425 Weimar

Block C: “Methods and Practice”

• Integrating House Connections During Sewer Rehabilitation with Compact-Pipe
  Thomas Siggel, Dipl.-Ing., Diringer und Scheidel, 80999 Munich
• Burst-lining Project in Water Protection Zone II—Burst-lining with a Special Protective Casing Pipe for Leak Monitoring
  Dipl.-Ing. Dirk Den Ouden, egeplast Werner Strumann GmbH & Co. KG, 48268 Greven

Block D: “Quality Assurance”

• Restructuring of Rehabilitation Procedures: RAL Quality Assurance for Sewer Construction GZ 961    
  Dipl.-Ing. Herbert Blesgen, Güteschutz Kanalbau, 53347 Alfter
• Certification of cleaning, consulting, and rehabilitation of property drainage systems   
  Horst Zech, M.A. in Economics. Pipeline Rehabilitation Association (RSV), 49811 Lingen (Ems) 

Block E: “Property Drainage”

• Inspection of branched property service lines using a Lindauer Schere articulated camera and simultaneous electronic sewer route surveying with the ASYS system
  B. Eng. Tobias Jöckel, jt-Electronik, 88131 Lindau
• TV Inspection as the Basis for Cost-Effective Project Management
  Dipl.-Ing. Frank Diederich, D.S.L. Engineering Firm, 49492 Westerkappeln
• Sewage in the Spotlight of the Legal System: When Is a Sewer Pipe Truly Leak-Tight?
  Dipl.-Ing. Jürgen Kramp, publicly appointed and sworn expert of the Karlsruhe Chamber of Industry and Commerce, 76549 Hügelsheim

Block F: “Specialized Areas of Wastewater Technology”

• Renovation of Sewer Manholes: Large-Scale Tests and In-Situ Investigations    
  Dr.-Ing. Bert Bosseler, IKT - Institute for Underground Infrastructure gGmbH, 45886 Gelsenkirchen
• Silicate Coating of Wastewater Structures in Extreme Wastewater Conditions    
  Mr. van Leth, Hermes Technologies GmbH, 58239 Schwerte
• Construction and Operation of Pressurized Sewer Pipelines
  Dipl.-Ing. Martin Schardt, egeplast Werner Strumann GmbH & Co. KG, 48268 Greven

Block G: “House Connection Summit”

• Property Drainage: Municipal Requirements and Obligations
  Marco Schlüter, Dipl.-Ing., IKT - Institute for Underground Infrastructure gGmbH, 45886 Gelsenkirchen
• An Effective Information Campaign to Win Over the City Council, City Administration, and Citizens
  Ludger Wördemann, City of Rheda-Wiedenbrück, 33375 Rheda-Wiedenbrück
• Are Citizens Left Out in the Rain? Expert Advice on the Path to a Leak-Proof House Connection!
  Mario Brenner, M.Eng., Brendebach Engineers, Wissen

Block H: “Materials and Applications”

• Trenchless Water Main Rehabilitation Using Real-World Examples
  Marc Winheim, Duktus, 35576 Wetzlar
• Polyamide Liners – A New Lining System for Steel Pipes
  Dr. rer. nat. Hans-Jürgen Kocks, Salzgitter Mannesmann Line Pipe GmbH, 57074 Siegen
• Tunneling Under Obstacles and Culvert Construction Using HDD
  Dr. rer. nat. Hans-Joachim Bayer, Tracto Technik GmbH, 57368 Lennestadt

Contact and Information: 

Alexander Krüger 

krueger@bauwesen.uni-siegen.de

0049 (0)271 740-2186

Program and Information

Block A: “Status of Sewer Rehabilitation”

• “A Patchwork of Sewer Systems—Condition, Necessity, and Framework Conditions for Rehabilitation/Renewal”
  Prof. Dr.-Ing. Horst Görg, University of Siegen
• Strategies for Maintaining Pipeline Networks in Times of Tight Budgets.   
   Dr.-Ing. Christian Falk, Dortmund Municipal Drainage Authority, 44263 Dortmund
• Current Situation in the Field of On-Site Drainage
  Dr.-Ing. Bert Bosseler, IKT Institute for Underground Infrastructure gGmbH, 45886 Gelsenkirchen

Block B: “Pipeline Construction—New Approaches”    

• Trenchless Construction in Cities
  Dipl.-Ing. Ulrich Edeling, Berliner Wasserbetriebe, 0179 Berlin
• Sustainability in Trenchless Pipeline Rehabilitation    
  Dr.-Ing. Torsten Schmidt, University of Dresden, Department of Urban Planning and Engineering, 01187 Dresden
• Smart Network Infrastructures and Trenchless Pipeline Construction 
  Prof. Dr.-Ing. Jörg Hölterhoff, GSTT, German Society for Trenchless Technology e.V., 14055 Berlin 

Block C: “Drainage Design”

• Rectangular or Star-Shaped—At the Pipe or at the Manhole. Dealing with Lateral Connections in Existing Sewer Systems
  Dipl.-Ing. Alexander Krüger, Department of Wastewater and Waste Management Engineering, University of Siegen, 57076 Siegen
• Variations on the Berlin Construction Method 
  Dipl.-Ing. Jörg Sommer, Certified Sewer Rehabilitation Consultant, 48268 Greven

Block D: “Quality Assurance”  

• Does Certification Ensure Quality?    
  Horst Zech, M.A. in Economics, RSV e.V., 49811 Lingen
• Calculation of Gas and Water Pipes at Intersections with Roadways—Dynamic and Static Installation of Steel Pipes
  Andre Grassmann, M.Eng., Eon Ruhrgas, 45138 Essen

Block E: “Property Drainage”

• Property Drainage Management at the Frankfurt am Main Municipal Drainage Authority
  Dr.-Ing. Holger Krier, Frankfurt am Main Municipal Drainage Authority, 60311 Frankfurt am Main
• Dealing with Property Owners and Renovation Companies    
  Frank Sprenger, Dipl.-Ing., Brendebach Ingenieure, 57537 Wissen
• Residential and Commercial Service Connections
  Dipl.-Ing. Mario Brenner, RSV e.V., 57537 Wissen

Block F: “Development & Innovation”

• Cost-Effective Renewal of Service Lines
  Dr.-Ing. Joachim Beyert, RWTH Aachen University, 52056 Aachen
  Trenchless Installation of Gas and Water Service Lines Using Keyhole Drilling Technology
  Elmar Koc, Dipl.-Ing., Tracto-Technik Lennestadt, 57368 Lennestadt
• Pipe Detection Using Ground-Penetrating Radar – Presentation of the Results of the EU-Funded ORFEUS Project
  Dr. Hans-Joachim Bayer, Tracto-Technik Lennestadt, 57368 Lennestadt

Block G: “Practical Applications”

• "Practical Applications" Renewal of pipe profiles using the pipe bursting method
  Dipl.-Ing. Sebastian Schwarzer, Tracto-Technik Lennestadt, 57368 Lennestadt 
• Options for Manhole Rehabilitation    
  Wolf-Michael Sturm, Expert in Pipe Rehabilitation Techniques, 13351 Berlin

Block H: “Pipeline Construction Online and Interactive”

• webkalkulator24.de - Online Cost Estimation and Other Useful Web Tools    
  Leopold Scheuble, M.Eng., Infrastructure Consulting, 76344 Eggenstein-Leopoldshafen
• GL Planning Tool: Trenchless
  Hayal Coelen, M.Eng., Department of Construction Management, University of Siegen, 57068 Siegen

Contact and Info: 

Alexander Krüger 

krueger@bauwesen.uni-siegen.de

0049 (0)271 740-2186

Program and Information

Keynote

• Welcome Remarks from the City of Siegen
  Mayor Steffen Mues
• Introductory Address by the Parliamentary State Secretary at the Federal Ministry of
  Economy and Technology 
  H. Schauerte, Member of the Bundestag, Parliamentary State Secretary and Commissioner for Small and Medium-Sized Enterprises
• Utility Line Construction Today: Expectations and Demands for Policymakers and Business Leaders
  Prof. Dr.-Ing. Wolfgang Merkel

SESSION A1-3: “Property Drainage”

• Property Drainage—A Purely Private Matter?
  Dipl.-Ing. L. Scheuble, Karlsruhe
• Implementation of the Requirements Under § 61a LWG at StEB Cologne
  S. Müller, City Drainage Authority (AöR), Cologne

BLOCK A4-6 “Wastewater Technology”

• Fundamentals of Selecting Rehabilitation and Replacement Methods
  H. Zech, M.A. in Economics, Managing Director of the Pipeline Rehabilitation Association (RSV), Lingen
• Challenging Conditions When Using the TIP Method
  W. Bezela, M.Eng., Pipefocus Bezela GmbH, Krefeld
• Comparison of Pipe Lining with Pipe Bursting
  M. Mendek, MBS Expert Services, Ravensburg

SESSION B1-3: “Pressure Pipelines”

• Trenchless Rehabilitation of a Cathodically Protected Gas Pipeline
  Dipl.-Ing. H. Hesse, egeplast Strumann GmbH & Co. KG, Münster
• Non-Conventional Installation of ProFuse Protective-Jacketed Pipes—Construction Site Reports
  Dipl.-Ing. U. Klümper, Uponor GmbH, Ochtrup
• Trenchless Construction Methods at the Siegen-Wittgenstein Water Authority—Experience Report
  Dipl.-Ing. D. Müller, Siegen-Wittgenstein Water Authority, Siegen

BLOCK B4-6: “Standardization, Quality Assurance”

• Certification of pipeline construction companies. Where do we stand? Where are we headed?
  Dipl.-Ing. G. Winkler, Central Association of the German Construction Industry (ZDB), Berlin
• Trenchless Methods Established Through Materials and Process Development
  Prof. Dr.-Ing. H. Roscher
• Comparative testing as a tool for quality assurance—concepts and an example from the IKT product test
  Dipl.-Ing. D. Färber, IKT – Institute for Underground Infrastructure gGmbH, Gelsenkirchen

Panel Discussion

• Can Successful Pipeline Rehabilitation Be Planned?
  Experts discuss the (supposed) ideal solution
• Moderator: Dr.-Ing. B. Bosseler (IKT),
  Panelists:
  Dipl.-Ing. M. Mendek (expert)
  Dipl.-Ing. M. Müller (City of Solingen)
  W. Kröller (Insituform Pipe Rehabilitation Technologies)
  Dipl.-Ing. F. Diederich (Planner, Engineering Firm)
  F. Hüpers, Dipl.-Ing. (Planner, Engineering Firm)

Site visit

BLOCK C1-5: “Pipe Materials and Installation”

• PE-100 RC pipes for the biogas supply to the Oldenburg cogeneration plant
  Dipl.-Ing. R. Rosenau, Frank GmbH, Mörfelden
  Special Considerations for Pulling Cathodically Protected Steel Pipelines
  Dr. Kocks and Dipl.-Ing. Klütz, Salzgitter Mannesmann Line Pipe GmbH, Siegen
• Modern Methods for Pipeline Rehabilitation Using Ductile Iron Pipes
  F. Schaffarczyk, J. Pfaffinger Bauunternehmung GmbH, Berlin
• Trenchless renewal by pulling short pipe modules from an existing manhole using a static burst-lining method—experiences from the perspective of a contractor 
  R. Berenbold, Managing Director, Otto Berenbold Hoch- und Tiefbau GmbH, Zussdorf
• Service life of pipes installed using trenchless methods
  Dr. rer. nat. H.-J. Bayer, GSTT Kohlberg

SESSION C6-10: “Innovative Applications”

• Development of an optimized
  sensor platform for pipeline location
  Dipl.-Ing. M. Naser, Goethe University Frankfurt am Main
• Further Development of the TIP Method – “Into the Manhole with the Long Pipe”
  Dipl.-Ing. E. Koch, Tracto-Technik, Lennestadt
• Service connection—laid trenchless with a watertight wall penetration
  H. Scheuring, Hauff-Technik, Herbrechtingen, and M. Spatz, Botec, Utting
• Gaining a Clear View During the Inspection of Property Drainage Systems—Flexible Work at Branch Points, 3D Coordinate Acquisition—Automatic Pipe Layout Generation
  B. Kummert, Kummert GmbH, Gerolzhofen
• District Heating: Energy for the Future—Prospects, Investment Strategies, and Distribution Network Construction
  Dipl.-Ing. Helmut Ernst, AFGW e.V., Frankfurt

SESSION D1-5: “Costs, Organization, and Legal Issues”

• VOB-Compliant Specifications and Billing
  Prof. Dr.-Ing. R. Rauh and Dipl.-Ing. H. Coelen, University of Siegen
• Requirements for the Prequalification of Construction Companies
  Dr. K.-U. Hunger, Kapellmann & Partner Law Firm, Düsseldorf
• Adjudication—An Innovative Means of Conflict Resolution
  Prof. Dr.-Ing. M. Gralla and Dipl.-Ing. M. Sundermeier, TU Dortmund
  SiGeKo—A Necessary Service in Utility Line Construction!?
  Prof. Dr. J. Hölterhoff, GSTT Berlin
• BALSibau Initiative – Safety in Pipeline Construction
  M. Grummich, DVGW Service & Consult GmbH, Bonn

Contact and Information: 

Alexander Krüger 

krueger@bauwesen.uni-siegen.de

0049 (0)271 740-2186

Program and Information

Keynote

Welcome
Steffen Mues, Mayor of Siegen
Opening
Prof. Dr.-Ing. H. Görg, University of Siegen

Nature Conservation and Trenchless Technology
J. Krüger, NABU, Berlin

Trenchless Construction—the First Choice for Downtown Pipeline Installation 
Prof. Dr.-Ing. J. Hölterhoff, GSTT, Berlin

Block A1-3: Wastewater Technology – “Current Status and Assessment”

• Acceptance of Lining Measures
  Dipl.-Ing. O. Sokoll, IKT Gelsenkirchen
• Private Property Drainage – Initiatives for Implementation (Expectations and Reality)
  Dipl.-Ing. F. Diederich, D.S.L. Engineering Office, Westerkappeln
• Experiences with sewer rehabilitation in the city of Bremen based on practical examples
  Dipl.-Ing. K. Messer, Hansewasser Bremen GmbH

Block A4-6: Wastewater Technology – “Standardization and Quality”

• Training for Certified Sewer Rehabilitation Consultants at the Association for the Rehabilitation of Drainage Systems
  Dipl.-Ing. N. Heidbrink, Güteschutz Kanalbau
• Quality Assurance Requirements for Sewer Line Rehabilitation – Experiences from Planning and Operation
  M. Mendek, Ravensburg Building Inspection Office
• Structural Analysis of Pipe Rehabilitation Using Bursting, Horizontal Piling, and HDD Methods
  Dr.-Ing. C. Falk, City of Dortmund

Block B1-3: Water and Gas Supply – “Network Monitoring and Operation”

• Strategies for the Rehabilitation of Water Distribution Networks – Implications for the Costs of Drinking Water Supply
  Dr. D. Schmidt, Thüringen Wasser GmbH
• The Network Supervisor and the Network Engineer
  Dipl.-Ing. L. Schiffmann, Rhenag – Rheinische Energie AG
• Thermal Effects of Cable Faults on PE Gas Pipelines
  Dipl.-Ing. M. Keller, Dortmunder Energie und Wasser

Session B4-6: Water and Gas Supply – “Standardization and Quality”

• Challenges of Climate Change and Demographic Trends in the Construction and Operation of Water Pipelines: Theory and Practice
  Prof. Dr.-Ing. H. Görg, University of Siegen
• IKT Field Study: No Point Loads from B5 Old Pipe Fragments During Burst Lining
  Dipl.-Ing. M. Liebscher, IKT Gelsenkirchen
• What is the quality of trenchless methods for rehabilitating pressure pipelines? 
  Dipl.-Volkswirt H. Zech, RSV e.V., Lingen

Factory tour

Transfer to Mannesmann-Fuchsrohr in Siegen with a plant tour (steel pipe production) and presentation

Construction site tour:

Renovation of a GG drinking water pipeline using burst lining

Block C: “Installation Techniques”

• Revision of DWA-A 125 / GW 304: Pipe Jacking and Related Methods
  Dr.-Ing. G. Nieder, Dr. Uffmann Engineering Office
• Planning Aspects of HDD Methods – From Practice for Practice
  Dipl.-Ing. G. Herrmann, Neuenhagen
• Uncontrolled and Controlled Press-Drilling Methods for the New Installation of Sewer Service Connections Using the Newly Developed Small-Diameter Drilling Rig “Grundobore 200 S”
  M. Pachutzki, Tracto-Technik Lennestadt 

Block D: “Costs and Legal Issues”

• Specifications and Billing: Examples and Recommendations
  Prof. Dr.-Ing. S. Plaum, Wiesbaden University of Applied Sciences
• Supplement Management: The VOB/B Compensation System
  Dr. K.-U. Hunger, Kapellmann & Partner Law Firm, Düsseldorf
• Use of Third-Party Land by Utility and Waste Disposal Lines
  P. Seliger, Erftverband

Session: E: “Practical Examples and Innovation”

• Practical Examples of Rock Drilling
  Dipl.-Ing. S. Bunger, Max Wild, Berkheim
• Rehabilitation of Large-Diameter Pipelines with PE-HD
  Dipl.-Ing. T. Meyer, Pfeiffer GmbH, Dresden
• Special Considerations in Planning Sewer Rehabilitation Measures for Industrial Facilities
  Dipl.-Ing. R. Angstmann, Gaul Engineering Office, Bamberg
• The Engineer on the Construction Site—(Identifying Errors, Avoiding Errors)
  Dipl.-Ing. F. Hüpers, ILL - Ingenieurgesellschaft mbH, Detmold

Block F: “Pipe Materials and Materials of Construction”

• Polyethylene Pipes for Alternative Installation Methods—the New PAS 1075
  Dr. J. Hessel, Hessel Ingenieurtechnik, Roetgen
• Why and How Cast Iron Pipes Are Installed Using Trenchless Methods
  Dipl.-Ing. R. Moisa, fgr Fachgemeinschaft Gussrohrsysteme, Berlin

Contact and Information: 

Alexander Krüger 

krueger@bauwesen.uni-siegen.de

0049 (0)271 740-2186

Program and Information

Keynote

• Welcome / Opening Remarks
  Ulf Stötzel, Mayor of Siegen
• Methods for Trenchless Pipe Rehabilitation
  Prof. Dr.-Ing. Jens Hölterhoff, GSTT
• Public-Private Partnerships—Potential Applications in Pipeline Construction
  Prof. Dr.-Ing. M. Gralla, University of Dortmund

Block A: Condition Assessment and Evaluation

• No-Dig Methods Even for Hydraulic Bottlenecks in Combined Sewer Systems—Old Sewer? A Solution Approach Using the City of Borgholzhausen as an Example
  Dipl.-Ing. W. Röper, Ing.-Büro Röper GmbH
• Condition Data from Property Drainage Systems and Resulting Recommendations for Action, 
  Dipl.-Ing. D. Cvaci, University of the German Armed Forces, Neubiberg
• Condition Assessment of Pipelines as the Basis for a Rehabilitation Strategy for Water Distribution Networks
  Prof. Dr.-Ing. E. Roscher, Erfurt University of Applied Sciences
• Qualification Requirements for Engineering Firms Planning Trenchless Rehabilitation Measures (Gas, Drinking Water, Wastewater)
  Dipl.-Ing. W. Bezela, Pipefocus GmbH Engineering Firm
• Survey and Assessment of the Pipe-Soil System
  Dr. B. Bosseler, IKT Institute for Underground Infrastructure gGmbH
• Condition Assessment and Rehabilitation Needs of Service Pipes and Associated Street Drains
  Dipl.-Ing. H. Cakmak, Ruhr University Bochum

Block B: Costs, Organization, and Legal Issues

• Valuation of Existing Facilities
  Dipl.-Ing. N. Milojevic, Dr. Pecher and Partners Engineering Office
• Financing of Trenchless Rehabilitation Measures
  Dr.-Ing. Alvarez, Stein and Partners, Bochum
• Effective Defect Management
  Prof. Dr.-Ing. R. Rauh, University of Siegen
• Awarding of Construction Contracts—Principles of Award and Legal Protection Against Unlawful Awards
  Dr. K.-U. Hunger, Kapellmann, Attorney at Law
• Bid Documents for the Horizontal Directional Drilling Method
  Dipl.-Ing. E. Fengler, LMR Drilling GmbH and GSTT
• Trenchless Installation/Renovation of Gas and Water Service Connections from Inside the Building
  Dipl.-Ing. H. Scheuring, Hauff Technik

Panel Discussion: 

• “Property Drainage—Holistic Rehabilitation Strategies”
• Participants: Dipl.-Ing. M. Lange, Kommunal und Abwasserberatung NRW GmbH;
  Dipl.-Ing. M. Müller, City of Solingen—Operations Manager, Municipal Drainage; 
  U. Winkler, M.Eng., Environmental Consulting Engineering Firm; 
  M. Mendek, Dipl.-Ing., City of Friedrichshafen, Municipal
  Municipal Drainage; 
  F. Diederich, Dipl.-Ing., DIEDOS Consult

Site visit:

The T.I.P. Method in Practical Application

Block C: Standardization and Quality Assurance

• Plastic Pipes for Trenchless Construction Methods – RSV Technical Bulletin 10 (current version)
  H. Zech, M.A. in Economics, RSV - Pipeline Rehabilitation Association e.V.
• Quality and Quality Assurance in Everyday Construction Site Operations
  G. Kandolf, M.Eng., SW Bremen
• Leak Tests for Sewer Pipes and Sewers
  H. Blessgen, M.Eng., Güteschutz Kanalbau e.V.
• Renovation of Gas and Water Service Connections
  Dipl.-Ing. B.-D. Ferger, Siegener Versorgungsbetriebe
• Requirements / Documentation of Tensile Forces
  Dipl.-Ing. F. Lipskoch, Wavin

Block D: Practical Examples

• Renovation of Sewer Pipes and Sewers Using the Tight-In-Pipe Method in Dortmund
  Dipl.-Ing. P. Chwastek, Dortmund Municipal Sewer System
• Selective Manhole Rehabilitation Using the Closed-Construction Method with Injection of Hat Profiles
  Dipl.-Ing. N. Janssen, Umwelttechnik Franz Janssen GmbH
• Combination of burst lining and flush drilling methods in sewer rehabilitation for the
  Friedrichshafen
  Dipl.-Ing. M. Mendek, City of Friedrichshafen, Municipal Sewer System Department
• Practical Examples in Microtunneling
   Dr.-Ing. Nieder / Dr.-Ing. Uffmann, Bohrtec GmbH
• Spectacular Applications of HDD Technology
  M. Hermsmeier, Ewald Beermann Pipeline Construction Company

Block E: Pipe Materials and Installation

• Applications of the Plow Method
  Dipl.-Ing. F. Föckersperger, Frank Föckersperger GmbH
• Quality Assurance for Trenchless Polyethylene Pipes
  Dr.-Ing. J. Hessel, Hessel Engineering
• Plastic Pipes for the Wastewater Sector / Quality Assurance for “On-Site Curing Compounds”
  Dr. J. Sebastian, Expert Office for Plastics
• Latest News from the Plastic Pipe Market
  Dipl.-Ing. K. Hilchenbach, egeplast Werner Strumann GmbH & Co. KG 
  Dipl.-Ing. N. Schlenther, Karl Schöngen KG
• Record-breaking debut of DN 900 ductile cast iron pipes using the flush drilling method in Valencia, Spain
  Dipl.-Ing. S. Ertelt, Buderus Giesserei Wetzlar GmbH
• Use of GRP Large-Diameter Pipes in Curved Tunneling in Essen
  Wolf Schrader, Hobas Rohre GmbH

Block F: Future Topics and Innovative Applications

• The jetting method: from small-diameter to large-diameter drilling
  Dr. rer. nat. H.-J. Bayer, TRACTO-TECHNIK GmbH & Co. KG
• Exclusively from SGL! Dike De-watering via Drainage Boring Using the Flush Drilling Method
  Dr. H. Berner, GTU Ingenieurgesellschaft mbH
• Dual Use of Sewers: Laying Fiber-Optic Cables in Sewer Pipes
  Dipl.-Ing. K. Manstorfer, Fast Opticom AG
• Technical and Economic Aspects of Geothermal Energy
  Dipl.-Ing. C. Müller, University of Siegen
• Construction of Geothermal Probe Systems—The GRD Method
  A. Hagedorn, M.S. in Geology, MBA
• The Flushing Method for the Remediation of House Service Lines
  Dr. Windhager, Tubogel – Geochemie Sanierungssysteme GmbH

Contact and Information: 

Alexander Krüger 

krueger@bauwesen.uni-siegen.de

0049 (0)271 740-2186

Program / Presentations / Conference Proceedings

Keynote

• On the Necessity of a Functioning Infrastructure
  Minister Christa Thoben, Ministry of Economic Affairs, Small and Medium-Sized Enterprises, and Energy of North Rhine-Westphalia
• Development of a Holistic Sewer Rehabilitation Strategy
  Dr.-Ing. M. Wolf, Dr. Pecher and Partners Engineering Firm, Munich
• PPP Task Force NRW
  G. Hoffmann, PPP Task Force NRW

Block A: Condition Assessment and Evaluation

• The Significance of Leaky Sewers in Terms of Infiltration and Exfiltration
  Prof. H. Görg / Dipl.-Ing. A. Krüger, University of Siegen
• Inspection and Condition Assessment of Drainage Systems
  Dipl.-Ing. F. Büser, Cologne Municipal Drainage Authority
• Property Drainage—A Systematic Approach Is Half the Battle
  Dipl.-Ing. R. Rehling, Managing Director of GEKO GmbH, Schwerte
• Comparison of Assessment Systems for Gas and Water Pipeline Networks
  Prof. H. Roscher, University of Applied Sciences Erfurt
• Material-Science Condition Assessments for Evaluating Horizontal Metallic Drinking Water Pipes
  Dipl.-Ing. H. C. Sorge, University of Applied Sciences Erfurt

Block B: Planning, Bidding, Contracting, Cost Estimation, and Costs

• e-Trasse – The Online Utility Line Information Service
  Dr. M. Fornefeld, MICUS GmbH, Düsseldorf
• When Can a Damaged Sewer Pipe Still Be Rehabilitated, and When Must It Be Replaced
  Prof. Dr.-Ing. V. Wagner, Neubrandenburg University of Applied Sciences
• Planning Considerations for the Replacement of Drainage Pipes Using the Static Bursting Method
  Dipl.-Ing. W. Bezela, Pipefocus GmbH Engineering Firm
• Planning and Implementation of a Trenchless Sewer Replacement Project in Friedrichshafen
  M. Mendek, City of Friedrichshafen
• The TIP Method for Pipes in Condition III – Experiences from the Perspective of the Planning Engineer
  Dipl.-Ing. W. Röper, Röper Engineering Office, Melle

Block C: Method Selection, Quality Assurance for Technology, Materials, and Execution

• The Importance of Steel Pipes in Pipeline Rehabilitation
  Dr. H.-J. Kocks, Mannesmann-Fuchs Rohr GmbH, Siegen
• Latest Developments in Trenchless Installation Methods Using Ductile Iron Pipes
  Dr. J. Rammelsberg, Cast Iron Pipe Association, Berlin
• Polyethylene Pipes for Trenchless Pressure Pipe Rehabilitation
  Dr. J. Hessel, Hessel Ingenieurtechnik, Roetgen
• Polyethylene pipes with protective properties
  Dipl.-Ing. H. Hesse, egeplast Werner Strumann GmbH & Co. KG, Greven
• Requirements for polymer plastic pipes for the trenchless rehabilitation of sewer lines
  Dipl.-Ing. N. Schlenther, Karl Schöngen KG, Salzgitter
• Trenchless Rehabilitation of Pressure Pipelines from the Perspective of a Specialized Contractor
  M. Seck, Dipl.-Ing., Paul SPEECK GmbH, Dortmund
• Experiences with the rehabilitation of drainage channels
  W. Zimmer, karo-san GmbH, Illingen
• Experience with the rehabilitation of gas and water lines that run partially parallel
  H. Bartels, Stadtwerke Haiger
• Experiences with the trenchless installation of ductile iron pipes using the pipe bursting method
  Dr. R. Levacher, City of Saarlouis
• Trenchless replacement of underground cable lines
  Dr. H.-J. Bayer, TRACTO-TECHNIK GmbH, Lennestadt

Block D: Considerations on Cost-Effectiveness, Sustainability, and Financing

• Technical Rules for the Trenchless Replacement of Pipelines
  H. Zech, Economist, RSV Pipe Rehabilitation Association Lingen (Ems)
• Quality assurance for the trenchless rehabilitation of drainage pipes in accordance with RAL GZ 961
  Dr. Künster, Quality Assurance for Sewer Construction
• Quality Assurance for the Trenchless Rehabilitation of Gas and Water Pipelines in Accordance with DVGW GW 301 and GW 302
  D. Hesselmann, M.Eng., Pipeline Construction Association
• A Holistic Approach to the Renovation of Service Connections and Public Sewer Networks
  Dipl.-Ing. M. Lange, Municipal and Wastewater Consulting NRW GmbH
• Economic Feasibility Analyses: Considerations for the Trenchless Rehabilitation of Pressure Pipelines
  Dipl.-Ing. P. Steinhauser, EV Selb-Marktredwitz
• Studies on the Friction Behavior of Gravity and Pressure Pipelines
  Prof. J. Jensen, University of Siegen
• Online Information and Learning
  Th. Schulte, Profundis GmbH, Lennestadt
  G. Prinz, Stein und Partner, Bochum
• Requirements for Geotechnical Investigations and Assessments for Trenchless Pipe Rehabilitation
  Prof. Dr. R. Herrmann, University of Siegen
• Cost-Effective Microtunneling Using Pilot Pipe Advancement
  Dr. G. Nieder, Bohrtec GmbH, Alsdorf
• Rehabilitation of Sewer Lines with Compact Pipe
  Dipl.-Ing. H. Spinnräker, Niederrheinische Versorgung u. Verkehr AG
• Dr. Windhager, Tubogel - Geochemie Sanierungssysteme GmbH

Contact and Information: 

Alexander Krüger 

krueger@bauwesen.uni-siegen.de

0049 (0)271 740-2186

The Water and Environment Research Institute is celebrating its 10th anniversary. The Wastewater and Waste Management Division has been established as an integral part of the institute. 

The event was very well received; for the first time, the Department of Waste Management at the University of Siegen participated. Presentations and articles on “Construction Waste” (Görg) and “Sand Washing” (Krüger) were published in *Müllmagazin* and *wwt Wasserwirtschaft Wassertechnik*.