Trenchless Benefits
20% - 50% Cost Reduction Compared to Traditional Open Cut
70% to 90% Reduction in Carbon Emissions Compared to Traditional Open Cut
Trenchless Construction Creates Less Disturbance to the Public
Trenchless Construction Creates Less Disturbance to the Environment
Every asphalt cut degrades the pavement by 15% even when patched properly, Trenchless reduces the cuts substantially
Pipe Bursting
Pipe Bursting is the replacement of an existing pipe with a new pipe of equal or greater diameter using specialized equipment with minimal excavation.
PW Trenchless was the first to employ Pipe Bursting in BC back in 1995. Starting with pneumatics, we purchased a system to burst pipes up to 300mm diameter. We subsequently progressed to larger capacity systems to complete bursts of up to 600mm. Being a leader in the field, PW converted static systems by purchasing a Grundoburst 800G in 2003. In 2017 PW Trenchless was the first contractor in North America to purchase a Grundoburst 2500G allowing us to burst up to 1.2m in diameter.
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Sliplining
The insertion of a new pipe of lesser diameter into an existing host pipe, typically requiring grouting of the annular space.
Even though Sliplining has been a common methodology employed in BC, PW Trenchless has used it extensively in culverts and large diameter storm sewer rehabilitation, thereby redefining the use of existing materials and pioneering the use of new materials.
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Horizontal Directional Drilling
A method of new pipeline construction derived from oil drilling which allows the installation of pipes at a designed alignment and gradient.
PWT's current staff have been involved in HDD since the mid nineties, installing various sewer and water main systems under such high profile areas as Fraser River & False Creek. PW pioneered the installation of a gravity sewer system in the nineties using HDD to service the entire Queensborough area of New Westminster.
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Invert Rehabilitation
A method of rehabilitating existing culvert structures which concentrates corrective measures to the areas which experience corrosive effects only. An efficient process which minimizes required time & materials to achieve desired results and a structural solution that increases flow capacity through the reduction of internal frictional forces.
Learn More View All ProjectsCarbon Calculator
The Trenchless Carbon Calculator allows utility owners to off-set their pipeline construction activities and gain carbon credits which can be used to neutralize carbon emissions.
PWT, working in conjunction with others, has led the way in developing this system to allow cities to gain carbon off-sets for their trenchless programs. The City of New Westminster, B.C. was the first to avail of this technology in June of 2016 when they received an off-set of over 400 metric tonnes for their trenchless pipe replacement programs.
Offset Carbon EmissionsDesign - 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. Learn more about design - build here!
More InfoNew Installation
New installation methodologies include HDD & traditional open cut Learn more about new installation here!
More InfoPipe 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. Learn more about pipe replacement & rehabilitation here!
More InfoCulvert 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. Learn more about culvert rehabilitation here!
More InfoPoint 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. Learn more about point repairs here!
More InfoPipe 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. Learn more about pipe upsizing here!
More InfoHorizontal 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. Learn more about horizontal directional drilling here!
More InfoPrimus Lining
Primus Line® is a flexible sliplining solution for the trenchless rehabilitation of pressure pipes. The system consists of a flexible Kevlar® reinforced liner and specially developed end fittings. Primus Line® is not bonded to the host pipe and is self-supporting. An annulus remains between Primus Line® and the host pipe.
Developed by experienced engineers, the system is suitable for different media as well as various application needs and has already proven itself in numerous projects.Learn more about primus lining here!
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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.