Trenchless Engineering Special Edition [5]

Brandenburger - Report on the sewer rehabilitation in Elmshorn

In record time, wide-diameter rainwater sewers in Elmshorn near Hamburg, which were subject to heavy use, were rehabilitated with pipe liners made by Brandenburger. The easy handling of the factory-saturated pipe liner, the BLUETEC® UVA light-curing technology and the use of the conveyor belt equipment proved to be a great advantage. Speed and quality of the rehabilitation impressed the client.

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Wavin TSDOQ and SafeTechRCn - new quality and safety in pipeline installation and rehabilitation

Polyethylene pipes already have an established position among all materials used to build pipelines. They are widely used to build water, gas and sewer systems (mainly pressure systems) and in industrial applications. Welded joints and high flexibility of PE pipes allow to use them also in new narrow-trench and trenchless technologies.

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Project Profile - Moscow inverted siphon

The innovative Pipe Technologies division of the leading Danish civil engineering contractor Per Aarsleff A/S has successfully completed, on schedule and to budget, one of its most challenging pipe line restoration projects under extreme weather conditions in the centre of the Russian capital Moscow. Working in temperatures down to -20°C, Aarsleff Pipe Technologies cleaned and inspected the inside of a 300 m long section of a low pressure, wastewater inverted siphon under the River Moscow, prior to installing a new thin walled resin impregnated felt lining in the flooded 1.4 m diameter pipe, using its novel cured in place pipe (CIPP) restoration technique, without any disruption to road or river traffic. The special lining, resembling a flattened flexible tube, was tailor made from layers of felt and impregnated with a special resin. The outer layer was coated with a polypropylene skin. This was done because, during the novel installation process on site, the liner was turned inside out as it was inverted and pushed by water pressure into the existing flooded rigid siphon. The wall of the existing Savinskiy steel siphon, built in 1956, acted as shuttering and the polypropylene coating became the inside surface of the new lining. After installation water inside the siphon was heated to about 85°C to cure the resin, transforming the inverted flexible tube into a rigid, thin walled smooth bore lining, capable of lasting over 100 years.

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Warsaw Airport is larger and larger... and so are we!

We have already written about our works at the Warsaw airport in the pages of this quarterly. However, as this happened a long time ago and in a completely different world (in our industry a few years is eternity), it seems worthwhile to present the latest developments taking place at this huge construction site. Oh, yes - a construction site, because the terminal finally got extended during a couple of years, and, strangely, many kilometers of water and sewerage pipelines were put to service after having been rehabilitated, with that part of the works at this construction site having been carried out by us - INFRA S.A.

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Conference Programme

Tuesday 3rd June 2008 10.00 - 11.30 Opening ceremony Speech of the NO-DIG 2008 laureates

Wiadomości

Floor Plan of the NO-DIG 2008

Floor Plan of the NO-DIG 2008

Wiadomości

Technologies up to 21stcentury standards

For many years no-dig technologies have been present on the world market and their development is increasingly visible and desirable. Their main asset is that they limit the scope of earthworks needed at the construction, renovation or examination of the technical condition of all types of pipes. Nowadays it is more and more difficult to imagine the areas where underground repairs are to be conducted as excluded from traffic. Due to the use of no-dig technologies in urban areas there is no need to \"paralyse\" the already crowded agglomerations.

Wiadomości

ENGINEERING 2007 - Conference, Exhibition and Live Technology Show

From 19th to 21st June the Krakow Conference Center at Tomaszowice Manor hosted the jubilee 5th International Conference ENGINEERING 2007 with companies exhibition, hands-on technology shows and the grand ceremony of the TYTAN awards. The annual event is supported by the rector of the Krakow University of Science and Technology professor Antoni Tajduś, vice rector of Krakow Technical University professor Kazimierz Furtak, the marshal of the province of Małopolska Marek Nawara, The Polish Committee for Geotechnics, the Polish Bridge Association, Polish Association for Trenchless Technology and Polish Foundation for Trenchless Technology, the Polish Association for Special Foundation Contractors and the Economic Chamber \"Polish Waterworks\".

Wiadomości

SPR technology

A series of difficulties and problems were encountered by us during the execution of the contract \"Renovation of the existing sewage networks in the left riverbank of Szczecin\", and we have already written about some of these stories in the columns of this quarterly in preceding articles. The sewers were renovated by us using various technologies, including CIPP liners, discrete pipe liners, chemically resistant coatings, open pit pipe replacements, and pipe eating.

Wiadomości

No-dig pipe conditionassessment in waterdistribution systems

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