The Jane Dufferin Collector (JDC) Gravity Sewer, consists of 2,990m of a 1050mm diameter reinforced concrete sanitary trunk sewer, constructed using open cut methods in the late 1980s. The proposed sewer system rehabilitation works will address the structural concerns of the JDC sewer system. This rehabilitation will improve the structural integrity of the pipeline with the additional benefit of improving the flow characteristics and reducing inflow and infiltration by greatly reducing the number of pipe and maintenance hole joints and defects within the collection system. Completion of the full rehabilitation of the system will also avoid completing further piecemeal and potentially emergent repairs while extending the remaining lifetime of the JDC by at least 50 years.
1. This Work will include, but is not limited to, the following:
- Trenchless structural rehabilitation of 2,990m of 1050mm ID existing sewer, from MH93-01 to MH93-21A by cured-in-place pipe (CIPP) lining;
- Structural rehabilitation of 22 maintenance holes from MH93-01 to MH93-21A.
Capital Infrastructure Group ran into many challenges on this project, such as the requirements to design build the bypass due to sizable changes in conditions to the existing contract. (CIG) was able to successfully design and build a wet-well suction chamber & bypass system to handle 640 L/S with a unique set-up and diversion.