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Tartu Ihaste DN1500 Pipeline Renovation Project

Introduction

Tartu, with its population of 101,246 (Population Census data from 2000) in an area of 38.8 square kilometres, is the second largest city of Estonia. Tartu, lying 185 kilometres south of Tallinn, is also the centre of Southern Estonia. The first written records of Tartu date from 1030.
With the constant development of the rainwater and sewage pipelines, city of Tartu arranged tender to renovate old 1500mm concrete rainwater pipeline.

 

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Relining with large diameter Polyethylene Pipes

Damaged and leaky pipes out of concrete, GRP, steel, ductile iron can be relined and renovated with Profiled Polyethylene Pipes in almost every diameter. Here, the old pipe serves as an empty conduit for the new pipe out of PE and therefore a completely new, self-contained pipe system can be built.
However, the use of profiled pipes especially in big diameters creates new stable pipe systems with a high static load capacity. For the static calculation of the new pipeline two things must be taken into consideration, the installation process and the operating condition of the pipeline. The new system will benefit from the extremely long service life of polyethylene pipes (> 100 years).

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