Each pipe is inserted into the host pipe from one location and then moved into place at either end of the existing host pipe, making this very similar to angioplasty through a vein or artery in the leg.
The project went extremely well and the many concerned citizens were very interested in how the project was completed with a very minimal impact upon their very hallowed and much loved park.
PW Trenchless and the City of Victoria and the rehabilitation of a Century old Sewer.
PW Trenchless and the City of Victoria and the Rehabilitation of an almost 100 year old Sewer.
Victorian era Victoria B.C. quickly outgrew it's existing cemetery by the early 1870's. The City purchased 12 acres from Robert Burnaby Ross Bay Cemetery buried it's first inhabitant, Mary Pearse in December 1872. Within 50 year it was already close to capacity so a new Royal Oak Burial Park was built.
Originally the Ross Bay Cemetery had a few creeks running through it so storm sewers (1550mm wide x 995mm high) were built to allow for the creeks to be filled in, allowing for more area for graves. The creeks of course do not run in straight lines so the actual sewer is a hand built dual layer of bricks that has many curves and elevation changes.
The Cemetery has for a long time been more of a park for the locals than a cemetery and one of the first British Columbians to be buried at the Ross Bay Cemetery in 1877 was Sir James Douglas. Working for the Hudson's Bay Company, Douglas established Fort Victoria in 1843 and is considered the "Father of British Columbia."
Billy Barker, famous for having Barkerville named after him was buried there in 1894, as was Judge Matthew Baillie Begbie. Buried in 1889, BC Premier Andrew Charles Elliott and John Hamilton Gray, were the first Premiers of BC to be buried at Ross Bay. Other Premiers include John Robson, Andrew Charles Elliott, Alexander Edmund Batson Davie, Theodore Davie, , James Dunsmuir, and Edward Gawler Prior. The first BC born Premier was Sir Richard McBride who died in 1917 and McBride BC is named for him.
The pioneering spirit is strong with the early British Columbians and Sir Edgar Dewdney was buried in 1916 and will always be known for building the pioneer Dewdney Trail across southern BC during 1865. One of the most famous Stars of BC to be buried in Ross Bay Cemetery was Emily Carr in 1945. The Cemetery is now used as a walking area for many residents and holds a place near and dear to their hearts. Much care would be needed to protect this precious bit of history.
Repairs to this brick storm drain had been done over the years, but it was time for a more permanent solution. PW Trenchless was contacted to repair the sewer line in May 2016 and in June PW Trenchless sent a team of technicians to access the condition of the sewer line.
The project starts at the Storm Drain Manhole DO195 on Fairfield Road and runs 120m. to Storm Drain manhole to DO193 on Dallas Road which runs adjacent to Ross Bay itself.
Initially a location on Dallas Road was selected for the Entrance pit. A more suitable location approximately midway along the project where the service road intersects the pipe location was used.
To measure and order the pipe needed, a "Pipe Mandrel" mimicking the outer dimensions of the proposed new pipe (1396mm wide x 895mm high), was manually pulled through the complete length of the existing brick pipe. Measurements were carefully taken to take into account the 12 horizontal curves and 4 vertical drops.
The next step was to build an access point for the new pipe sections to be lowered into the existing Host pipe. A large excavation was dug on the existing roadway within the Cemetery where the roadway intersected the sewer below.
All members of the crew had been trained in confined space rescue and work processes.
The crew needed to create specialized equipment for moving the pipe sections over 100m inside the host pipe. Each pipe is inserted into the host pipe from the access point and then moved into place at either end of the existing host pipe
The pipes are set into place on grade and the void between the Host pipe and the new Glass reinforced Plastic pipe is filled with concrete.