Author: Professor, Dr. Dietrich Stein - TrenchlessOnline

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the world’s pipe replacement procedures. But when the host pipe is made of steel, cast iron or ductile iron, a static pipebursting system is usually required. Static pipebursting systems have been growing in popularity over the years because of their ability to replace virtually any type of pipe. Instead of the percussive action of pneumatic bursting tools, a static system utilizes a configuration of specially designed heads and an expander to split the host pipe. The static bursting unit pushes a series of threaded steel rods through the host pipe. When the rod string emerges into the exit pit, a bursting head and the replacement product are connected to the rod string. As the bursting head is pulled back through the host pipe,it splits the host pipe,the fragments are pushed into the surrounding soil, and the replacement product is installed along the same line and grade as the utility being replaced.After the pipe is replaced, the only restoration is to the area affected by the small entry and exit pits. Pipe bursting is increasingly recognized as a long-term In short, pipebursting systems enable municipalities to finally do what, in many cases, budgets and resources have prevented. Sooner or later, our aging infrastructure has to be replaced. With pipebursting systems, the process can be completed much sooner. solution to a long-term problem. Nationwide, more than 10,000 miles of water, sewer and gas pipe have been replaced economically and efficiently using pipebursting systems. With these systems, municipalities can replace their disintegrating steel, iron, clay and concrete pipe with durable, flexible, longerlasting and corrosion-resistant HDPE pipe. They can upsize main and lateral service lines to meet the needs of expanding urban populations and to relieve overstressed, overloaded facilities.And they can more easily replace pipe in congested urban settings, established neighborhoods and other areas where environmental concerns prohibit open cutting. In short, pipebursting systems enable municipalities to finally do what, in many cases, budgets and resources have prevented. Sooner or later, our aging infrastructure has to be replaced. With pipebursting systems, the process can be completed much sooner. Kevin Smith is product manager with The Charles Machine Works Inc., Perry, Okla. Circle 31 on reader service card. Circle 32 on reader service card. 36 TRENCHLESS TECHNOLOGY September 2007 www.trenchlessonline.com
Executive-Caliber Conferences for Executve Decision-Makers November 27-28, 2007 Atlanta, Georgia Asset Management: Bridging the Gap Between Theory and Practice Utility Asset Management is the wave of the future. To keep pace with regulations and state of the practice in the water and wastewater fields, a functional asset management program is a necessary component of doing business. Implementing an asset management program is a challenge, considering mounting needs and stretched budgets. Sponsored by Underground Infrastructure Management — the leading professional journal for water and wastewater professionals — Asset Management: Bridging the Gap Between Theory and Practice addresses the latest advances and practices in the field, and the steps to take in getting an asset management program started. Who Should Attend? Mayors, city managers, public works directors, city planners, engineering directors, consulting engineers, and private water company CEOs Conference Contact Information: For more information and to register for the Asset Management for Water and Wastewater Systems conference, please visit our website at www.uimconferences.com or call (330) 467-7588 Circle 51 on reader service card.
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Author: Professor, Dr. Dietrich Stein - TrenchlessOnline

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