In early 2017, The City of Maple Ridge put out to tender a contract for an “Experimental” pipe burst in a fairly sensitive area of Maple Ridge and through part of Kanaka Creek Park. The host pipe was 275mm (15 inch) and it was to be upsized to 850 mm (34 inch).
By the Spring of 2017, PW Trenchless Construction started work on replacing a 375mm PVC sewer main, via Pipe Bursting, that ran through part of Kanaka Creek Park in the City of Maple Ridge. Upon consultation with the City and PW Trenchless, arborists marked out which trees would be removed to allow for the Entrance and Exit pits. Although the existing 375mm PVC pipe was not that old, it was installed via open cut methods and the trees had grown very large over the years. Replacing the pipe to a larger diameter via open cut methods would have been disastrous to the existing green space and, due to the depth, it required a large amount of material to be removed from the site.
The Installed pipe was in two sizes; a minimum inside diameter of at least 600mm, and the two most western sections needed to be at least 750mm wide. This required two bursts, where the upsize from 375mm PVC to 750mm HDPE pipe had to be installed via Pipe Bursting. The longest burst was 118m and the shortest was 97m.
The spring of 2017 brought very heavy rainfall, so the water level was extremely high on the Kanaka Creek as it met the Fraser River less than 100m away from the westernmost and lowest manhole “TS 15”. The upper sections were installed first, leaving the bursts closer to Kanaka Creek for late July while we waited for lower water levels. The project was completed over a 5-month period.
We are proud that this project received an Honourable Mention in the No Dig Conference of 2018.
We are proud that this project received an Honorable Mention in the No Dig conference of 2018.
In early 2017, The City of Maple Ridge put out to tender a contract for an "Experimental" pipe burst in a fairly sensitive area of Maple Ridge and through part of Kanaka Creek Park. The host pipe was 275mm (15 …See Project
The District of North Vancouver had a 900mm CSP storm sewer that had been failing for 10 years. Numerous efforts to clean the pipe had resulted in the bedding, surrounding the pipe, migrating into the pipe when cleaning efforts were …See Project
The King George Highway was opened a year after King George's Royal Visit to Canada in 1939. He planted trees alongside the highway in South Surrey and over time these have become part of the community. When the underlying sewer …See Project
An alternate tendering process where the contract is awarded to one entity which comprises both engineering and contracting.
Because PW Trenchless Construction offers such innovative solutions for underground utilities, it is often beneficial for the owner to request solutions based on a performance specification. This allows PW Trenchess to offer unique solutions while working with equally innovative engineering companies.Learn More
New installation methodologies include HDD & traditional open cutLearn More
In this day & age of pipe systems reaching the end of their projected lifespan, pipe replacement and pipe rehabilitation have become major fields of engineering.
PW Trenchless Construction provides viable options such as pipe bursting, loose fit lining and internal pipe re-construction whether partial & fully circumferential.Learn More
The aging culverts under roads and highways in many case have reached the end of their engineered life-span. We consider the rehabilitation or replacement of these culverts to be vital to our built environment.
PW Trenchless has been a pioneer in working with MOTH, railway companies and municipalities in developing rehabilitation methodologies for the hundreds of thousands of culverts that currently exist in BC. We have offered solutions in both procurement and construction from design-build to sliplining, invert rehabilitation and full circumferential relining.Learn More
Often pipe failure can be concentrated to one section, for various reason, leaving the rest of the pipe in good condition. The repair of these localized failures are know as external point repairs (EPR's).
EPR's demonstrate PW's ability to work as both a trenchless and civil contractor, completing EPR contracts using our civil contracting skills and assisting other pure trenchless contractors who only have the capacity to work in an existing pipe.Learn More
Pipe upsizing is the fundamental concept of pipe bursting.
The vast majority of pipes are less than or equal to 200mm in diameter, but with today's densification practices of urban design, there is a major demand to increase current capacity to handle extra flow. Pipe bursting provides the ideal solution to this issue, particularly in an urban setting .Learn More
Horizontal Directional Drilling is a low impact Trenchless construction service where pipe is installed in a shallow arc along a bore path which has been created by a drilling rig. Often the terms Horizontal Directional Drilling (HDD) and Directional Boring are used interchangeably, but in our industry we use the word “boring” when we utilize smaller sized drilling rigs with small diameters for short crossings in the hundreds of feet, and we use the word “drilling” when we utilize larger rigs with large diameters for long crossings in the thousands of feet.Learn More
When you join PWT, you become part of a community of people who are engaged in the most innovative practices in the Trenchless Industry. We have been instrumental in setting up a scientific method for cities to gain carbon offsets/credits from their use of trenchless construction. This system has been reviewed by the BC Government and has been approved as of December 2018. We expect to see it in common use shortly.