CWW was awarded an 11,665,000$ contract on May 5th 2015 for the Cured-in-Place-Pipe (CIPP) lining of 17,000m of mainline combined sewers varying in diameters from 200mm (8”) to 1500mm (60”) in the West sector of Montreal. The project includes the cleaning, preparation and CCTV inspection of the sewers as well as the lining and as required replacement of approximately 3,000m of catch basin drain lines. Prep work began on May 6th 2015 and crews began lining on June 2nd, 2015.
CWW crews installing a 1050mm (42”) diameter CIPP liner in an egg-shaped brick sewer on Saint-Jacques street June 27th 2015. This was the last of 6 similar liner installations, all of 1050mm diameter, on Saint-Jacques street between De Courcelles street and Saint-Ferdinand street for a total of 580m (1,900ft).
This area is located just South-East of the Décarie highway (15) and Ville-Marie highway (720) and is in close proximity to two of the City’s biggest on-going construction projects: the Turcot Interchange Reconstruction and the new Super Hospital Construction. Major planning and coordination efforts were required to maintain this arterial road’s functions during the sewer rehabilitation works. Most of the work took place on weekends to further minimize the impact to road occupants. To add to CWW’s complex task, these liners were particularly thick and heavy due to the unusual depth of the sewers reaching as deep as 7.0m (23ft) below Saint-Jacques. A crane was used to manipulate the liners from CWW’s temperature-controlled storage container to its liner installation equipment. The liners were then inverted in the sewer and cured in place with CWW’s hot-water process. All sewer lining works were completed through existing manholes which eliminated the need for excavating this busy road.
