Trenchless International

July 2011

From the Chairman’s Desk

Sam Ariaratnam

I want to welcome all of you to the summer season. For those of you that had to endure a long and harsh winter, this must bring a lot of relief.

Executive Director’s Report

John Hemphill

This year, ISTT celebrates its 25th anniversary. It is fitting that the 2011 International No-Dig was held in Germany.

Business marketing: the value of advertising online

Zelda Tupicoff

Does your marketing plan include a budget for online ads? Find out why placing advertisements online is no longer an optional extra.

Trenchless, eh!

Trenchless International is pleased to announce a new Canadian office, based out of Toronto, Ontario, with Associate Editor Sarah Paul heading it up.

Mears internationally certified

Mears Group, Inc., a leader in horizontal directional drilling (HDD), through its commitment to continual improvement, has gained the internationally recognised ISO 9001:2008 Quality Management System certification.

Trenchless champions

The 2011 International No-Dig Gala Dinner and Awards night was an enchanting evening, held in the Charlottenburg Castle in Berlin. Trenchless Technology received the royal treatment with some great projects and people recognised for their outstanding achievement in the industry.

Bursting the impossible

For five years, the City of Atlanta had a problem: an ageing, 18 inch diameter sewer pipe that had been partially exposed due to erosion caused by a nearby creek. The plan called for a dramatic upsize – to 28 inch diameter HDPE pipe – because decades of urban growth had rendered the original pipe’s capacity seriously insufficient.

No-Dig goes to South Africa

The Southern African Society for Trenchless Technology (SASTT) will be hosting No-Dig South Africa 2011, to be held in Pretoria, from 23-24 August 2011.

Industry publisher recognised

Trenchless International publisher and Managing Director of Great Southern Press (GSP) Chris Bland has been elected to the board of Publishers Australia.

A short history of auger boring

Robert Martin, CH2M HILL

Auger boring has evolved significantly in its 80 year history. Here Robert Martin presents a short history of auger boring technology and developments.

London digs deep

As part of its five year investment on essential works to improve ageing water pipes, sewers and other facilities, Thames Water, located in the UK, has two major tunnelling projects in the works – Lee Tunnel and River Thames. Here, Trenchless International provides the most up-to-date information on the projects.

Jacking in Japan: the pipe roof method

by Toru SATO1, 2, Tony SUZUKI2, Hideki SHIMADA1, Takashi SASAOKA1, Kikuo MATSUI 1

In many cases, tunnels in an urban area are constructed near existing facilities and structures, in soft ground that contains underground water. For this kind of work, structural stability of the tunnel and the nearby structures and facilities is vital. Thus, pipe roof method, a closed trenching method, has been attracting the attention of engineers in many countries as a supplementary construction method.

Extreme and extraordinary: connecting Czajka underground

The underground connection to the new Czajka wastewater treatment plant in Warsaw, Poland, was completed successfully and on time. Two Herrenknecht AVND micromachines handled the difficult drives with a total of 5,860 m with bravura.

ISTT news

Ian Vickridge retires

ISTT No-Dig: Berlin

The 2011 ISTT No-Dig was held in Berlin, from 2–5 May, in conjunction with trade expo Wasser Berlin. The event was a resounding success including 173 exhibiting companies, 51 peer reviewed papers from 17 countries and memorable social events.

World best in Poland

After receiving the national No-Dig Award by the Polish Society for Trenchless Technology (PFTT) in 2010, Hobas, along with construction company group PBG,was awarded the 2010 ISTT No-Dig Project of the Year Award - Installation for their Czajka project, in Warsaw, Poland. The award was presented to them at the recent conference held in Berlin, Germany.

Rebuilding Canterbury’s underground

Following the devastating Christchurch earthquakes, Sydney Water and pipeline rehabilitation companies have been involved with sewer rehabilitation works in the New Zealand city.

Typhoon: best new machine

The Typhoon, developed by Gateshead based Hydrascan Ltd., in association with Northumbrian Water, was awarded ISTT ‘Best New Machine’ at the 2011 No-Dig Gala Dinner held in Berlin, Germany.

Tough enough for the job

Andy Wedgner and David Walton, Borouge

Utility companies are increasingly turning to No-Dig pipe laying technology to renovate and install pipelines because of the economic and social savings. However using techniques such as ‘close fit’ relining or horizontal directional drilling can introduce damage or scores into the surface of the PE pipe that, over time, can develop into cracks and cause the premature failure of the pipeline.

Bursting with rope

ABS Trenchless has introduced the rope bursting system – the world’s first large pipe bursting system with a rope as the pulling mechanism and a pulling force of more than 1,000 kN.

Locating voids behind pipe walls

David Crowder, C.E.T., R.V. Anderson Associates; Gerald Bauer, P.Eng., R.V. Anderson Associates Limited; Kevin Bainbridge.

Large diameter sewers are considered critical assets for most municipalities. Preventing catastrophic sewer failures is probably one of the most challenging issues facing Asset Managers today. Recently the City of Hamilton, Ontario, Canada, took a pro-active approach to face this challenge and experimented with a pipe penetrating radar inspection tool (PPR), using Ground Penetrating Radar (GPR) technology.

How to assess the risk to your assets

Matt Wheeldon BEng(Hons) CEng MICE, Wessex Water Services Ltd

Deterioration rate modelling for sewers and optimising investigations and investment using a risk-based approach.

Site report: curing with light

Recently, a sewer had to be rehabilitated in the city of Speyer, located in Rhineland-Platinate, Germany, due to corrosion, structural damages and extreme fat deposits. The city called upon Brandenburger’s light-curing pipe liners to rehabilitate the 1.7 km of pipe.

Laterals: plugging and renewal

Peter Ellegaard Larsen – Business Development Manager, Per Aarsleff A/S, Pipe Technologies

Cured-in-place pipe lining methods are known to cause only minor reductions of pipe cross sections. Here Peter Ellegaard Larsen reviews CIPP techniques and lateral renewal products successfully used in Copenhagen, Denmark.

Extreme lateral connections

Planning of sewer rehabilitation in Minden and Roesrath, Germany

A TIP for rehabilitation

A project undertaken by the Urban Drainage Council in Hagen, Germany, was recently recognised for its pipeline construction. Bettina Linke accepted an award for her employers at the 4th German Symposium for trenchless pipe replacement at the University of Siegen.

5 minutes with Sergio Palazzo 60

As a part of a new feature, Trenchless International will introduce you to the members of the ISTT Executive Sub-Committee. Get to know the great people behind the ISTT. Here we speak to Sergio Palazzo from the Brazil Association for Trenchless Technology (ABRATT).