News and Articles

Feb 07, 2006

Article

Dipl.-Ing. Michael Henze [Tec Management]

Concrete & Water — a new heat storage & exchange medium to improve seasonal effectiveness of solar thermal and other alternative heat energies

A new concept of underground long- and short-term heat storage and exchange advised for modern district and single building energy efficient heating and cooling systems.

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Feb 06, 2006

Article

Emunds+Staudinger GmbH

Not only for drain construction - Linear Shoring: Varied applications thanks to modularity

Linear Shoring from Emunds+Staudinger has proven successful in many projects at home and abroad. The sliding rail shoring system is available not only in a single-rail variant and as overlapping Linear Shoring, but also as single-rail and overlapping inner-city Linear Shoring.

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Feb 02, 2006

Article

Hermann Sewerin GmbH - Sewerin Service GmbHDipl.-Ing. Dirk Becker

Water leak detection - precise pin-pointing of faults

Different from electro-acoustic principles to locate water leaks, which are using different kinds of microphones to analyse loudness of leak noises for pin-pointing, correlation is based on the run-time difference of acoustic signals created by the water discharging from the leak.

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Jan 25, 2006

Article

Trenchless Australasia

Trenchless technology and asset management in Australia

It is fitting that as the global Trenchless Technology community gathered for the 24th International No Dig Conference in Brisbane, Trenchless Australasia magazine has completed its first survey for the industry in Australia.

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Jan 18, 2006

Article

Wupperverband, Mr. A. Rondorf

Geographic Information Systems (GIS) - an Advanced Tool for the European Water Industry

Interdisciplinary approaches and solutions are becoming increasingly widespread in the European water industry following the introduction of the European Water Framework Directive (WFD).

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Jan 18, 2006

News

Prof. Dr.-Ing. Stein & Partner

"Guideline Microtunnelling" newly published by Stein & Partner

A new international technical guideline "Practical Guideline for the Application of Microtunnelling Methods" (ISBN 3-9810648-0-1) of Prof. Dr.-Ing. Stein & Partner GmbH, Bochum is available since December 2005.

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Jan 15, 2006

Article

Prof. Dr.-Ing. Stein & Partner GmbH, Bochum

The use of hydraulically bonded filling materials for the backfill of utility trenches in sewer construction

For several years now, self-compressing filling materials that are flowable when installed and subsequently self-hardening have been increasingly applied (mixtures of construction materials or mixtures of soil binders). They are named by the manufacturer or, in literature, referred to as liquid soil, soil mortar or filling mortar. They predominantly serve to fill the embedment, but in some cases also to produce the main filling. The following contribution serves to introduce the latest expert discussions, especially of planning agencies, of communities and suppliers of pipe networks as well as to present the pros and cons of the application of hydraulically bonded filling materials from the point of view of construction technology and statics.

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Jan 11, 2006

Article

Bjorn von Euler

Slurry pumps handle abrasive iron ore slurry

At an iron ore outloading site in Australia, seasonal torrential downpours led to a tremendous volume of abrasive slurry that could not be handled in an effective manner by existing cantilever pumps. To resolve this situation, ITT Flygt unit provided the mining company with a complete solution built around its slurry pumps that finally solved a 30-year old problem.

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Jan 02, 2006

Article

Trenchless Design Engineering Ltd.

Quality controls are key to successful CIPP lateral lining applications

Laterals are the underground sewer service pipelines that connect from a building, such as a private house or commercial property, to the main line sewer. Typically private house laterals are 4” to 6” in diameter. Commercial properties and multi-unit residential properties can have much larger sizes. Laterals typically run under landscaped areas, driveways or parking lots. The aim of CIPP lateral lining is to solve many problems that occur with deteriorating laterals instead of replacing them. While these problems vary from lateral to lateral, a successful CIPP lateral lining application or product needs to solve a variety of existing lateral problems that may be encountered from location to location. This may require different materials to suit different kinds of lateral situations.

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Dec 20, 2005

News

American Water

McCandless Authority Wins High-Tech Sewer-Inspecting Camera; American Water Raffles Off Camera During WEFTEC Conference

Patrick E. Connell, Treasurer and Member of the Board of Directors for the McCandless Township Sanitary Authority (MTSA), walked away the winner of a Cues Lite Stick Inspection Camera, valued at over $6,000, after attending the Water Environment Federation's 78th annual Technical and Exhibition Conference in Washington DC. Connell won the device by visiting the booth of American Water, the nation's largest supplier of water and wastewater services.

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Dec 20, 2005

Article

Thomas Viehöfer

Stability of a Borehole during Horizontal Directional Drilling

A group of Dutch drilling contractors and engineering consultants are working together to enhance their knowledge on borehole stability during Horizontal Directional Drilling (HDD). The influence of arching on the stability of a borehole filled with bentonite has been tested with the geotechnical centrifuge of GeoDelft in combination with the maximum mud pressure the borehole can withstand before a blow-out occurs. The centrifuge tests have been analyzed using a Finite Element Program (PLAXIS) with respect to arching around the borehole. The test results are compared with the PLAXIS outcome.

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Dec 13, 2005

Article

Tyrens AB

The NORIS-Project and the Top-Cote-Liner

The NORIS project is an EU-project co-financed by the Interreg IIIB programme. The project should be a platform for exchange of knowledge on No-Dig techniques, source control methodologies and monitoring systems. Seven partners from five countries in the North Sea Region are involved in the project. The NORIS project has three environmental focuses: How to separate unwanted rain- and drain water from combined sewer pipes How to redirect rainwater to groundwater by natural processes How to minimise the risk of overflow and overload of sewers The focusing on separation of rainwater from sewage water is carried out with a new No-Dig technique. The new technique called Top-Cote, will be used in pilot projects in 2005 and 2006. The first pilot project should be completed in the village of Tidan close to Skövde in Sweden. The TopCote-technique combines pipeline rehabilitation and the separation in the same installation by using a 2-in-1 liner.

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Dec 07, 2005

News

IKA Werke GmbH & Co. KG

Continuous production of polymer modified bitumen (PMB) in road construction

Globalization, economic growth, and the abolishment of borders within Europe have resulted in a continuous increase in heavy goods traffic. These ever rising traffic levels have led to a continuously increasing strain on our traffic surfaces in both road and airport construction. In order to satisfy these requirements, more and more polymer modified binding agents (i.e. bitumen) are used in asphalt production.

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Dec 06, 2005

Article

Erez Allouche

Interactive Software for Selection of Technologies for Installation and Replacement of Utilities

The decision of how to accomplish the installation or repair of a buried pipe in an urban environment involves tangible and intangible parameters. This paper outlines the development of comprehensive, yet straightforward and easy to use interactive software for the evaluation of alternative construction methods that can be employed in the installation, rehabilitation, or replacement of buried pipes and conduits. The software emphasizes simplicity and practicality, and limits input data to those readily available to utility engineers at the design stage of the project. Based on the specific characteristics of the problem(s) facing the decision-maker, the software performs a preliminary screening, eliminating technologies unlikely to meet the project’s requirements. A technical evaluation is then undertaken during which the technical capabilities of the various technologies identified in the first step are compared with the project’s attributes. Next, a risk analysis is performed based on the characteristics of the project's environment and the anticipated soil conditions. The model offers an interactive graphical user interface, and it is compiled as a standalone application compatible with common Microsoft operating systems platforms.

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Nov 29, 2005

Article

Geodelft - National Institute for Geo-Engineering

The Synergy Between Theory and Practice in Drilling Technology

GeoBrain is a facility at GeoDelft with the purpose to provide society with all relevant geo-engineering knowledge and experience in a structured way. On the basis of the available knowledge and experience engineers, decision makers and construction supervisors can come to a fast, reproducible and objective choice, taking into account the consequences. The paper presents an example from the GeoBrain experience databases and forecasting models developed for directional drilling, or: "GeoBrain Drilling".GeoBrain is closing the gap between theory and practice. It is aimed directly at reducing uncertainty and the costs of failure, thereby increasing the quality of profession and minimising the risk in geo-engineering works.

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Nov 23, 2005

Article

Siggi Finnsson

The DigiTrak Eclipse Locating System: A Flexible and Innovative Approach to Meeting Today's HDD Locating Challenges

During the recent downturn in the Horizontal Directional Drilling (HDD) market, equipment manufacturers focused on research and have introduced a number of innovations. Nowhere has this been more evident than amongst manufacturers of HDD locating systems. In particular, the documentation of an increasing number of parameters concerning the drilling process has been a focus of development. Additionally, the capability to successfully carry out a wide range of project specifications with the same locating system has been made a priority. This paper will describe the DigiTrak® Eclipse® locating system’s various features and will use short project summaries as examples. Particular emphasis will be placed on gravity sewer installations; project mapping and documentation; down hole drilling fluid pressure; load monitoring and documentation; and magnetic guidance system operations. It is the intent of the author to demonstrate the level to which modern locating systems have risen and to help educate project planners and owners about some of the various HDD projects successfully undertaken in recent years.

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Nov 22, 2005

News

Water Environment Federation (WEF)

Water Environment Federation, Utilities , Black & Veatch to Assess Wastewater System Damage in Gulf Coast

Hurricanes Katrina and Rita left in their wake considerable damage to water and wastewater systems in the affected areas of Louisiana, Mississippi and Alabama. While federal, state and local officials are working diligently to assess the overall damage, a comprehensive evaluation of the damage to wastewater systems is not available. To meet this need, the Water Environment Federation (WEF), members working for utilities, and private companies are collaborating with global engineering, consulting and construction company Black & Veatch to develop and present an area-wide assessment of the damage and probable cost to rehabilitate or replace wastewater systems in the Gulf States.

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Nov 17, 2005

News

Messe Berlin GmbH

WASSER BERLIN 2006 - A concentration of international expertise

Investment boom in Europe At the trade fair and convention WASSER BERLIN 2006 from 3 to 7 April 2006 international experts will be focusing on issues of disposal of drinking water and waste water. At the same time the Berlin Exhibition Grounds will also be hosting the trade fair GAS BERLIN. Approximately 700 exhibitors and a total of 60,000 visitors from around 60 countries are expected to attend the two trade fairs, the convention and the interactive trade show "WASSerLEBEN".

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Nov 15, 2005

News

Eberhard Scholz, University of Bremen

Project "Lernbau" - More Safety and Health in the Building Industry

The cooperation-project "LernBau" is about safety and health for the workers on building sites. Under the scientific direction of the University of Bremen, the building enterprises, building owners, the labour inspectorate, and the employees liability insurance association for the building industry are trying to develop comprehensive concepts for more safety on the building sites by considering the interests of all project partners. The project from the "Bremer Landesprogramm Arbeit und Technik" is financed and promoted by the European Union and the senator for work, women, health, youth and social action.

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Nov 04, 2005

News

NDT Systems & Services AG

First 6-in and 8-in crack-detection tools for pipelines

NDT Systems & Services AG, Stutensee, Germany has introduced a further addition to its highly-successful range of LineExplorer in-line inspection tools. The tools, incorporating a new generation of electronics, make use of the company’s proven modular design, and are available in crack-, as well as metal-loss, inspection configurations.

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Nov 03, 2005

News

Prof. Dr.-Ing. Stein & Partner GmbH

After the Conference is Before the Conference - UNITRACC will be presented on the 2006 No-Dig Show in Nashville

The successful international No-Dig Conference in Rotterdam has just ended and the developers of UNITRACC have arrived back home with the No-Dig Award in their luggage, but they are already busy preparing for the next international event. The repeatedly awarded web-based platform for information, learning and working in sewer and pipeline construction will be presented on the 2006 No-Dig Show in Nashville (USA).

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Oct 24, 2005

Article

REHAU AG + Co Business Unit Umwelttechnik

Municipalities require multi-billion Euro infrastructure investments.

The use of plastic materials for repair and replacement of sewer inspection chambers is rapidly increasing in popularity. The reason for utilising plastic materials in place of traditional concrete products is because modern plastics offer superior performance characteristics in typical sewer environments. Nearly one third of the existing inspection chambers are defective and of about 9 million manholes in Germany approximately 2,7 to 4,5 million are in need of rehabilitation. "There will be a great need for investments in the next few years", says Heiko Leihbecher from REHAU.

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Oct 04, 2005

News

Prof. Dr.-Ing. Stein & Partner GmbH

"Trenchless Technology for Installation of Cables and Pipelines" by Dietrich Stein now available in English

Finally, the time has come! The uniquely extensive compendium by University-Professor Dr.-Ing. Dietrich Stein "Trenchless Technology for Installation of Cables and Pipelines", which has received attention and is highly appreciated among experts, was translated into English for the international market and was published in September. It comprises 15 chapters with a total of 748 pages, 845 figures and 307 tables.

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Sep 29, 2005

News

Prof. Dr.-Ing. Stein & Partner GmbH

UNITRACC wins NO-DIG Award

In a ceremonial event as a prelude to the 23rd International NO-DIG Conference in Rotterdam on 19 September the NO-DIG Award was awarded by the ISTT, the International Society for Trenchless Technology for extraordinary projects in the field of sewer- and pipeline construction.

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Sep 15, 2005

Article

Emunds + Staudinger GmbH

Luxemburg farmers place their faith in the E+S Site Road - Optimum load distribution

The Beckerich-Huttange-Nordange main collecting system in Luxemburg, which Weiland Bau S.à.r.l. is constructing on behalf of the Syndicat Intercommunal de Dépollution des Eaux Résiduaires de l’Ouest (SIDERO), is about 3,300 m long. In addition to the new collecting system – a corrugated sheath measuring DN/OD 315 to 400 mm – a district heating pipeline and a duct for an optical fibre cable are also being laid in the trench in a single work process. To protect the ground of what is mainly grazing land, the contracted company is using about 500 running metres of Site Road from Emunds+Staudinger. This satisfies the client’s brief as well as the needs of the affected farmers, for it eliminates extensive soil extraction and removal, as required for the construction of a conventional site road of crushed rock. The temporary Site Road is quickly and easily laid. Owing to their optimum load distribution, the 2.4 m long and 3.8 m wide elements protect the ground effectively from destruction and compaction by construction vehicles.

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