NO-DIG Pipe #trenchless #sewer #repair #pros #and #cons


Logan Clay Products’ NO-DIG® Pipe for Gravity Sanitary Sewers

Trenchless Installation with Vitrified Clay Jacking Pipe

For more videos of both trenchless and open trench installations, visit the NCPI YouTube channel

No Open Trenches (Reduced Disruption):

A minimized excavation and construction footprint compared to open trench installations of gravity sanitary sewers means local businesses, streets and the landscape won’t suffer through the construction phase of the project. The reliable accuracy of line and grade for pilot tube installations means you can avoid existing utilities as well. Municipalities frequently realize significant savings by eliminating the need to rebuild roads.

Keeping businesses, including golf courses and shopping malls open and fully functioning throughout the project has proven to be a key benefit of trenchless installations. Supporting the political and economic drivers of a community can be invaluable.

The desire to preserve and protect environmentally sensitive areas have also driven the selection of trenchless methods of installation. Reduced congestion, reduced trucking activity and a low environmental disruption all combine to make trenchless the environmentally preferable installation method.

No Trench to Backfill (Reduced Trucking Materials):

Jacking and receiving pits are the only areas that require excavation, so those are the only areas that need to be restored. No open trench means minimal or zero imported bedding material or removal of trench spoils. Limited surface disruption also means minimal cutting of existing pavement and significant reduction in settlement.

Greater Depths (Reduce Lift Stations Greater Design Options):

The ability to install at greater depths for gravity sanitary sewers means you can reduce or eliminate lift stations, eliminating initial costs and reducing the associated long-term operating and maintenance expenses.

Why Pilot Tube Method with VCP?

  • The most accurate small diameter trenchless method for gravity flow systems. Accurate to within ¼” over a single drive of 400’.
  • Frequently less expensive than other guided trenchless methods suited for gravity flow.
  • VCP has a designed compressive strength of 7,000 psi (per ASTM C1208). Actual NO-DIG pipe test results consistently average 18,000 psi. This compressive strength allows for drives of up to 500’ (dependent upon pipe diameter, soil conditions, etc.)
  • Environmental preference: Trenchless is the most environmentally responsible method of installation and vitrified clay is a naturally sustainable product.
  • Proven in a variety of soil conditions in the USA and Canada for over 20 years.
  • Why Trenchless Instead of Open Trench?

    There are a host of reasons, but here are the key reasons engineers cite:

    • No Open Trenches – Significantly reduces disruption to the community, utilities (including fiber optics), businesses, streetscapes and traffic patterns and eliminates the need to repair or replace streets.
  • No Trench to Backfill – Eliminates the need to import foundation, bedding and backfill materials, greatly reducing truck traffic and disruption to the community.
  • Greater Depths of Installation – Increase the design options available and reduce or eliminate the expense of lift stations.
  • The information provided here is by no means comprehensive. For a full discussion of the pros and cons of trenchless installation with VCP, please contact us.

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