The International Society for Trenchless Technology

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Close-Fit Liners feed

Close-Fit Slip lining, Swage Lining, Fold and Form Liners, Woven Hose Liners, etc.


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A Study on the Bedding Effects

Focused on the bedding effects of the existing host pipe on the close-fit non-bonded flexible linings for pipeline rehabilitation, in this study, earth pressures and deformation behavior of flexible pipe liners for different deteriorated conditions of the
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Close-Fit HDPE Relining

Traditional sewer rehabilitation methods can result in a reduction in cross sectional area and capacity of the sewer line of up to 40%. Another significant drawback of these methods is the need for the construction of large insertion pits where access is
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Close-fit lining of pressure pipelines

The paper describes renovation of pressure pipelines by means of close-fit lining with polyethylene pipes. Individual techniques will be described with the particular attention on quality assurance both during manufacturing and during installation. To be
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Close-Fit Rehab Of Large Diameter Water Pipelines, Netherlands

BAM / Nelis Infra have as major licensee in Europe for the Subline technology acquired in the last 5 years about 20 km of experience with rehabilitation of large diameter drinking water pipelines in the Netherlands (and Portugal). Subline is a close-fit p
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Compact Pipe

Several water, gas and sewer network owners are currently faced with severe problems associated with their pipelines and are all studying best manners to rehabilitate the lines. Trenchless technology has been widely adopted in the pipeline rehabilitation
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Compact Pipe - Experience in the Middle East

The paper describes renovation with the close-fit lining technique Compact Pipe. This system was launched in Europe more than 10 years ago. Recently the first actual applications took place in Arab Emirates. Compact Pipe will be described with . . .
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Comparative Analysis of Three Pressure Rehab

The Syndicat des Eaux dIle-de-France (SEDIF) is a publicly-owned company which produces and distributes nearly a million cubic metres of water per day to supply its 144 adherent cities, which represent a served population of 4 million inhabitants in the P
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Development of Pipe Rehabilitation System

The development of no-dig pipe rehabilitation systems, known as PALTEM-SZ and PALTEM-Flow-Ring systems, of which design can be carried out to make them suitable for the degree of deterioration and buried depth of an existing pipe, were completed, being ca
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Extending the limits of swagelining

Swagelining is a more and more often used as a trenchless rehabilitation technique. It has been developed by Advantica (ex-British Gas), being the patent owner. It consists on an in-situ reduction of a HDPE pipe, pulled through a die. The inherent memory
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Folded PE Liner Pipes - A New Frontier for Trunk Water Mains (UK

Over many years Zweckverband Landeswasserversorgung (LW) have been battling with a major leakage problem on one of their main trunk supply pipelines which transports water from Geislingen to Langenau in Germany. This pipeline was constructed from 1500mm d
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Folded/Formed PVC Liner For Brick Township

Brick Township located on the Jersey Shore, New Jersey has initiated a program of sewer rehabilitation where by the preferred method of repair is the use of Folded/Formed PVC Liner for pipe sizes 6 inch through and including 12 inch diameter pipe. As of t
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Innovative Solutions for Efficient and Fast Pipe Rehabilitation

The access to drinking water is a very precious good on earth. Even in regions which are rich of water in natural deposits, there are problems with efficient water tapping and supply. In many cities more than 50 % of the water is lost on the way to its en
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Leiduin to Haarlem

This paper concerns a description of a large water transport pipeline rehabilitation between the pumping station Leiduin and right through the city of Haarlem on behalf of Waterleidingbedrijf Gemeente Amsterdam. In total around 7 km of pipeline was reline
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Long-Term Liner Buckling Tests: Learning From Data Scatter

Close-fit plastic pipeliners have been installed to functionally and/or structurally rehabilitate deteriorated existing pipe for more than 30 years. As more and more pipes are lined to extend their performance life, the quality and long-term erformance o
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Low-Impact Water Main Rehabilitation in Kelowna, British Columbi

The City of Kelowna elected to employ lo-dig technology to rehabilitate an existing ductile iron water main, running under Harvey Avenue, the busiest road through the City. The roadway is part of Highway 97, the main highway through BC’s Okanagan Valle
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Multipurpose High Performance Structural Liner

Tubular-woven liners can be used successfully for leak prevention and pressure pipe protection for at least 15 years, so long as the host pipe remains in an acceptable mechanical condition. Due to their elasticity, pressure inside the tubular-woven liners
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New Design Method for Non-Circular Sewer Linings

The French National project of research and experimentation named RERAU (Rehabilitation of Urban Network Sewers) has developed a design method for non circular linings subject to groundwater pressure. The method is based on an analytical approach and give
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Omega-Liner� Close Fit Lining

Fast and reliable solution for sewer renovation. In the Omega-Liner close-fit lining the old sewer pipeline is replaced by a new pipe, made of durable and resilientplastics. The Omega-Liner pipe is inserted in a folded shape via a manhole directly into th
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Quality Assurance of Close-Fit Liners (The Netherlands)

When considering renovation of an existing pressure pipe line, the selection of the most appropriate renovation technique evidently then is a key issue. The different pipeline design criteria should be well understood and taken into account. In the newly
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Rehabilitation of a 16 Water Pipeline

The City of Morelia, Michoacan, Mexico utilizes a 16 carbon steel water pipeline to supplwater to a city water treatment plant from a nearby reservoir. Due to the deteriorating condition of the existing carbon steel pipeline and the resultant loss of valu
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