CASE STUDY SPR™ PE...CASE STUDY SPR PE PARIS, FRANCE DN2750 (108 in), 281 m (922 ft) The Le Pecq...
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CASE STUDY SPR™ PE PARIS, FRANCE DN2750 (108 in), 281 m (922 ft) The Le Pecq project saw a new Euro- pean nominal diameter record being set for this form of Spiral-Wound pipe rehabilitation technology. In 2011 one of the largest stormwater collector in the French district of Le Pecq, a commune on the western outskirts of Paris, was rehabilitated by the Spiral-Wound pipe rehabilitation technology SPR™ PE. The deteriorated corrugated metal pipe with diameters of 3000-3300 mm (118 – 129 in) is situated alongside the exclusive “Les Pyramides” private leisure centre and under the busy main road Rue Nationale 10, Lyonnaise des Eaux. The responsible sewage board „Syndicat Intercommunal d´Assainissement de la Région de Saint-Germain-en-Laye“ instructed the rehabilitation of the large diameter sewer to ensure sufficient discharge capacity for at least 50 years. The solution: SPR™ PE Spiral-Wound pipe liner The rehabilitation of 281 m (922 ft) of the corrugated metal pipe involved the use of the SPR™ PE Spiral-Wound pipe liner, previously known as RIBLINE, with diameter of 2750 mm (108 in).
Transcript of CASE STUDY SPR™ PE...CASE STUDY SPR PE PARIS, FRANCE DN2750 (108 in), 281 m (922 ft) The Le Pecq...
CASE STUDYSPR™ PE
PARIS, FRANCE DN2750 (108 in), 281 m (922 ft)
The Le Pecq project saw a new Euro-pean nominal diameter record being set for this form of Spiral-Wound pipe rehabilitation technology. In 2011 one of the largest stormwater collector in the French district of Le Pecq, a commune on the western outskirts of Paris, was rehabilitated by the Spiral-Wound pipe rehabilitation technology SPR™ PE. The deteriorated corrugated metal pipe with diameters of 3000-3300 mm (118 – 129 in) is situated alongside the exclusive “Les Pyramides” private leisure centre and under the busy main road Rue Nationale 10, Lyonnaise des
Eaux. The responsible sewage board „Syndicat Intercommunal d´Assainissement de la Région de Saint-Germain-en-Laye“ instructed the rehabilitation of the large diameter sewer to ensure sufficient discharge capacity for at least 50 years.
The solution: SPR™ PE Spiral-Wound pipe liner The rehabilitation of 281 m (922 ft) of the corrugated metal pipe involved the use of the SPR™ PE Spiral-Wound pipe liner, previously known as RIBLINE, with diameter of 2750 mm (108 in).
Regarding the boundary conditions the only possible access to the sewer was a created insertion pit measuring approximately three by four metres with a depth of five metres, which could be set up on a narrow pedestrian lane next to the Rue Nationale 10. The circular winding machine was stationa-ry positioned in the sewer and wound the HPDE profile strip, which was continuously supplied from an above ground spool, to a watertight pipe. During the winding of the machine the fully encapsulated steel-reinforced profile strips were simultaneously weld to the required nominal diameter of 2750 mm (108 in) until it reaches its end point. The end points at Le Pecq were, at one side, the outlet into the Seine and at the other the underground structure into which two collectors feed into the corrugated metal pipe.
Winding machine during the changeover from the
first section to the second against the flow path.
Once the first 211 m (692.3 ft) section had been successfully rehabilitated, the Spiral-Wound machine was quickly turned 180° within the trench and then converted for an upstream reach of 70 metres (229.6 ft), including the neces-sary scaffold for the operators of the mighty machine, itself weighing around 1 tonne. From then it were further four working days before the second section was fully lined with SPR™ PE. In the last working stage the annular gap between the liner and the corrugated pipe was filled with grout, with approxi-mately 600 cubic metres (21189 ft³) of this being needed.
