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Trenchless International

October 2008

Going long in Portland

The East Side Big Pipe project, the largest sewer construction in the history of Portland Oregon, included the longest microtunnel in the United States – driven with TBM ‘Rosie.’ Craig Kolell of Jacobs Associates, Christa Overby of the City of Portland and Matt Roberts of the Kiewit-Bilfinger Berger (KBB) joint venture outline the experience of driving the longest mictotunnel drive in the United States.

Joburg Water rehabilitates pipelines

Trenchless Technology is a rapidly growing industry in South Africa. A range of techniques have been utilised to replace and rehabilitate the water infrastructure of Johannesburg.

Transforming Singapore: from the ground down

By N. Loganathan PB

Singapore is implementing a deep tunnel sewerage system (DTSS) project as a long-term solution to meet its wastewater collection, treatment and disposal needs through the 21st century.

TBM completes Po Shan project

A 3.5 metre diameter Robbins Tunnel Boring Machine (TBM) recently completed two drainage tunnels – at 244 metre and 165 metre – in Hong Kong without a conventional back-up system.

Submarine cables installed under Strait of Singapore

Hester Regoort, Two Rivers Marketing

In the last ten years, emerging internet technologies like voice- and video-over-IP and broadband access have driven exponential growth in bandwidth requirements. As a result, Singapore, which sits at the crossroads between the Asia Pacific, India and Europe, has become a major hub for submarine cables used for internet and telecommunications infrastructures.

Rockies Express pipeline

The final segment in the Rockies Express pipeline project to transport natural gas across the United States of America, the REX-East, has received Federal Energy Regulatory Commission (FERC) approval.

Belfast’s sewers saved by CIPP

Northern Ireland Water is rejuvenating the Victorian era sewer network servicing Belfast. In total the Belfast sewer network incorporates approximately 1,300 kilometres of sewers, covering an area of 42 square kilometres.

Overcoming infiltration in Denmark

In 2007 Odense Vandselskab prevented a major water supply from being contaminated with wastewater. Carl Henrik Jeppesen of Odense Vandselskab and Anders B. Rasmussen of Per Aarsleff explain that this work led to an unofficial Danish record breaking CIPP lining.

Expanding in India with CIPP

The Delhi Jal Board (DJB) plans to spend in excess of $US1 billion to rehabilitate a sewer system that serves 14 million people in Delhi, India.

Marine Renewable Energy relies on HDD

In a world increasingly focused on ‘green’ energy supplies, and in order to generate worthwhile returns, Marine Renewable Energy devices are installed in the fastest flowing and roughest seas available. This of course can mean they are dangerous places to work in. Also, to complicate matters further, these coastlines are often environmentally sensitive.

Spanning the network

Technology has developed and evolved in tandem with the demands of modern infrastructure and telecommunications. TeraSpan’s Vertical Inlaid Fibre (VIF) is a high tech trenching method for laying fibre optic cables in the urban environment that may challenge the definition of Trenchless Technology.

Researching Ukrainian bentonites and their practical application

A modern city requires ongoing development of its systems of underground communications.

Cutting edge pipe bursting

Pipe bursting is the most frequently applied pipe replacement technique worldwide, with over 50,000 kilometres of pipe replaced to date.

Warrior bursts onto the scene

Warrior Worldwide believes that it is important to convey to the marketplace that Trenchless Technology offers profitable opportunities for small projects, and so far they have received huge interest.

Where are we going in the UK?

Steve Kent, Chairman of the UKSTT reviews the industry and recent issues, trends and drivers in the United Kingdom and Europe.

Mapping the Underworld: locating buried assets without excavation

It is estimated that up to four million holes annually are cut into UK roads to repair or install pipes, cables and other buried assets, at a cost of £7 billion per annum. England’s Mapping the Underworld project aims to develop the means to locate and record the position of 100 per cent of buried assets without the need for excavation.

Making your mark

An important component of underground asset management is the capacity to identify what is buried and where.

King of the Castle

John Castle, retiring Executive Secretary of the ISTT looks back at his time with the Society.

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