Trenchless Rehabilitation Planning

The rehabilitation of buried infrastructure offers various benefits for the operation of water distribution, transportation, drainage and sewer systems. 

  • Avoid excavation
  • Avoid disruption of above infrastructure
  • Rehabilitate at a fraction of the cost of replacement
  • Repair assets to optimize safety and budget

Inversa has the experience and expertise to select the right trenchless method for the job. Using the best available information, Inversa can design a plan to ensure that trenchless projects are completed using the most appropriate equipment and products to the correct standards for the best possible outcomes. 

Buried pipes and conduits are used in diverse applications in different settings, however the main value of renewing buried infrastructure trenchlessly are similar in all situations. This approach to renewing infrastructure is the least invasive and often most cost effective way to ensure the safe and long lasting operation of an asset. Trenchless rehabilitation projects are primarily done without disrupting service to the supported infrastructure, do not require major excavation and can be completed at a fraction of the cost when compared to replacing the asset.

Trenchless Technology for Rehabilitation of Buried Infrastructure

Technical Considerations when Designing a Trenchless Rehabilitation

Inversa's approach to designing an asset specific management plan relies on the best possible condition data and is intended to provide the owner with a clear path forward for rehabilitation with a detailed engineering design recommendation for each asset. The primary goal is to optimize each asset's life cycle cost based on a variety of technical considerations, including:

  • condition assessment results
  • technical concerns (geotechnical, hydraulic, environmental etc.)
  • available trenchless rehab approaches
  • engineering design requirements
  • safety

Strategic Considerations when Designing a Trenchless Rehabilitation

The rehabilitation recommendations are intended to consider only the best viable technical options available to the owner. The standard considerations made for choosing the prescribed rehabilitation method are the above factors and known construction costs. Additional strategic considerations are made based on the owners operational goals. These require consultation with the owner and include:

  • social costs of traffic disruption
  • desired life expectancy
  • future plans for expansion or development
  • future plans for maintenance in close proximity
  • strategic use

ROI Analysis

Both groups of considerations are balanced against the ROI analysis. Each asset is considered independently and recommendations are made to optimize the life cycle based on the current condition state. The estimated costs of the rehabilitation methods are compared to the replacement costs. From this a direct return on investment is calculated. Strategic benefits may then be considered alongside the financial analysis to provide a full understanding of the cost to make a clear decision about the future operation of the asset.