Recently I looked back at past issues of the Underground Construction magazine Annual Municipal Survey and compared their estimates of trenchless activity in the water pipe rehabilitation for 2004 and 2009 and I was pleasantly surprised to see significant growth, about 50 per cent in the past five years
I am writing this report amid record snow that has blanketed the Washington DC area, realising that by the time you receive this issue of Trenchless International the weather in most parts of the northern hemisphere will have turned decidedly warmer as the spring season approaches.
A new Trenchless Technology Society has been established in Colombia. The Colombian Institute of Subterranean Infrastructure Technologies and Techniques will encourage the use of trenchless solutions in the vibrant capital Bogotá and throughout the South American country.
The 2010 ISTT No-Dig Awards will be presented at the International No-Dig Conference and Exhibition, to be held in Singapore 8–10 November. Submit your entry now!
A reticulation project in South Africa, using horizontal directional drilling to connect ten buildings in Johannesburg’s CBD, has received the 2009 SASTT Award for Excellence.
The international Trenchless Technology community is lining up in force to support the ISTT’s 28th Annual International No-Dig Conference and Exhibition, to be held in Singapore 8–10 November 2010.
North America is home to a diverse underground infrastructure industry. Here Trenchless International looks at innovative and record breaking projects, using a range of trenchless techniques, as well as providing an overview of NASTT’s No-Dig 2010.
Chicago, the Windy City, is situated on the south western shores of Lake Michigan and is the capital of Illinois. The city, founded in 1833, has depended on the lake for water and sanitation. Here Trenchless International provides an overview of the development of the city’s water and wastewater networks, as well as looking at current projects.Chris Brahler, NASTT Chairman
2010 is a very special year for NASTT as we are celebrating our 20th anniversary. In 1990, five key people began to brainstorm on the possibility of establishing a new association just for Trenchless Technology. That organisation became known as NASTT and those five people became its founding members.Mark Hallett, 2010 No-Dig Program Chair
I speak from personal experience about how NASTT’s annual conference has positively impacted my business, my career and my involvement in NASTT, North America’s number one organisation devoted exclusively to promoting Trenchless Technology. In the spirit of David Letterman’s Late Show Top Ten list, here are my top ten reasons why I believe you should visit the 2010 No-Dig Show in Chicago, 2-7 May.Nick H. Strater, Brian C. Dorwart, Brierley Associates, LLC and Lane Puls, Burns and McDonnell
The recent expansion of an electric substation in rural New York State required trenchless installation of a 345 kilovolt duct bank through an existing rock slope, below live overhead wires – an optically guided, downhole hammer was selected to complete the job.
The completion of another record breaking pipe installation in the US, this time at Parris Island, a marine training base in Beaufort, South Carolina, marks a series of successful and lengthy crossings of Fusible PVC pipe.Dale Larison P.Eng, Engineering Co-ordinator, Engineering Technology Inc.
TransCanada Pipelines’ North Central Corridor Project presented an exciting opportunity to push the boundaries of horizontal directional drilling in Canada. Near the town of Manning in northwestern Alberta a 42 inch natural gas pipeline had to cross the Peace River.Lucy Eldred
Rehabilitating crumbling sewer mains will be a priority for the Bahrain Ministry of Works as it strives to realise the Kingdom’s Economic Vision 2030.Jon Boon, Insituform
Introducing a new pipeline rehabilitation system into a mature market is not easy. Even after extensive product development and testing to prove that the selected polymers, pipe processor and fittings being used meet project requirements, it is necessary to prove to potential clients that the system can withstand the rigours of rehabilitation in the field.
Per Aarsleff’s recently formed Pipe Technologies division has successfully completed its first pipeline repair on a damaged pumping station discharge pipeline at Bawdsey, on the East Suffolk coast in the United Kingdom. The deformed and leaking cast iron pipeline was restored with CIPP.
In the Polish city of Kielce an HDD rig, featuring second generation ADBS and a new type of backreamer, has successfully completed a crossing in sandy clay ground conditions.Rainer Hermes
For an effective and long-lasting – and hence economical – shaft coating, careful and thorough cleaning and preparation of the substrate is essential.Lyndsie Mewett
Pigs are integral for the maintenance of pipeline infrastructure. Broadly, there are two different types of pigs – cleaning pigs and intelligent pigs (or in-line inspection tools). Here, Trenchless International, looks at the basics of cleaning pigs. This article investigates cleaning pigs for the petrochemicals industry, and provides a water pipeline case study.
A dynamic forum discussing key trends, products and services in the pipeline inspection sector – the 22nd Pipeline Pigging and Integrity Maintenance Conference and Exhibition was held in Houston, Texas, from 15–18 February 2010.
Perma-Liner Industries is the North American distributer for IMS Robotics – bringing innovative products to a new market.
The US Commerce Department will fund a $US8 million project to develop a robotic platform that will repair and retrofit deteriorating water mains nationwide.Ing R Stein and Dipl-Ing H Cakmak, S & P Consult Bochum GmbH
Part one of this article (Trenchless International January 2010) introduced the approach to the survey on the state of the road gully systems in Germany, the data pool, as well as project-specific key figures in the first part of this publication. The second part of this article includes the results of questions concerning cleaning, inspection, leak tightness testing, requirements for rehabilitation and rehabilitation costs, as well as a summary of the results of the survey.Masahi Komura, Koichi Araki, Hideki Shimada, Takashi Sasaoka, Kikuo Matsui and Takahisa Tomii
Current renewal methods for pipelines and culverts are very effective for pipe function decline and accident prevention, but offer little in the way of rehabilitating meandering and slacks of pipes. Continually expanding urbanisation means that restoring pipeline position using open cut methods has become less desirable, and as such has led to the development of new pipeline position restoration technologies, such as the chemical injection method.