Pipe Upsizing/Bursting

Of all the trenchless methods of existing pipe rehabilitation, the only method that allows for increasing pipe size is Pipe Bursting. Recently, PWT completed a project in a park in Maple Ridge, replacing a 375mm (15″) PVC pipe with a 800mm (32″). See Project.

The experimental bursts that PW Trenchless has accomplished in recent years are putting PW Trenchless in the forefront of upsizing existing pipe mains via pipe bursting in North America. Pipe Bursting can be done replacing size on size, but with every increase in population and demands on pipe mains, upsizing is almost always preferred unless strict replacement is specifically required. (See North Van Pool Rehabilitation project).

Although 200mm (8”) to 300mm (12”) is common, experimental bursts have been accomplished with 375mm (15”) to 800mm (32“) replacements! The ground condition is important for these experimental type bursts, and sometimes when the main is shallow some heaving can happen, but often settles after the burst has finished.

PW Trenchless has accomplished many of these large experimental upsizes. Call to discuss your next project with PW Trenchless.

Projects with Pipe Upsizing/Bursting

Maple Ridge narrow laneway

Maple Ridge Alley In the early part of 2019 PW Trenchless replaced a sewer for the city of Maple Ridge in a narrow laneway parallel to Lougheed highway. The project was complicated by the tight setback of buildings that in some …

See Project

Maple Ridge River Road Spring 2019

This was the final part of the contract that was started in 2017 with 5 of 8 Sections completed by PW Trenchless starting in 2015. This project was also the first time PW Trenchless had tried to replace a 200mm …

See Project

2021 White Rock Beach Avenue

March 29, 2021The city of White Rock had a sewer main that needed replacement just up from the west end of the beach with the exit pit was just west of the intersection of West Beach Avenue and Anderson Street. …

See Project

Our Services

Design - Build

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.

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New Installation

New installation methodologies include HDD & traditional open cut

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Pipe Replacement & Rehabilitation

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.

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Culvert Rehabilitation

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.

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Point Repairs

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.

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Pipe Upsizing

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 .

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Horizontal Directional Drilling

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.

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Primus Lining

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Clients We Serve

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Join Our Team

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.