Mainline Sewers Files

2015 UCT Paper: Eliminating Infiltration Requires a Holistic Approach in Naperville, Illinois

Tony Conn, John Manikak UCT Show 2015

  • In April 2013, Chicago and its neighboring suburbs experienced a 100-year rain event resulting in extensive flooding, sewer system surcharges, and basement back-ups.

2014 iSTT Paper: Pipe Grouting Longevity Effectiveness Evaluation

James W. Shelton, PE International No-Dig 2014 2014

  • These grouting projects were implemented using specifications largely consistent with the new NASSCO grouting specifications. This paper will review the requirements for testing and grouting under which the original work was done.

2013 WEFTEC Paper: Sealing Annular Space and Lateral Connections with Chemical Grouts

Jim Gentry WEFTEC 2013

  • Acrylamide chemical grout has been used successfully for over 40 years to reduce groundwater infiltration by sealing leaks and joints in mainline and lateral sanitary sewer systems.

2012 No-Dig Paper: Cured in Place Liner Defects - Three Studies of Installed Liner Performance

James W. Shelton, PE NASTT's 2012 No-Dig Show 2012

  • Over the last 6 years, Malcolm Pirnie has conducted a monitoring program of cured in place mainline liners and lateral liners to assess the affect of various variables on long term liner quality, especially with regard to liner porosity/pinhole leakage.

2017 No-Dig Paper: Value-Engineering for Sewer Rehabilitation with Injection Grouts for Anytown, USA

Michelle D. Beason, PE, Don Rigby NASTT’s 2017 No-Dig Show 2017

  • Injection grouting is a soil sealing process used to control infiltration more effectively, more efficiently for less cost, and engineered to holistically attack all four points of entry: mainline, laterals, lateral connections, and manholes.

2017 WEFTEC: New Mandate: Grout First, CIPP Line Second for Rehabbing Pipe, Service Laterals, and Manholes in Naperville

Tony Conn, John Manijak, Don Rigby WEFTEC 2017

  • New Mandate: Grout First, CIPP Line Second for Rehabbing Pipe, Service Laterals, and Manholes in Naperville

2016 No-Dig Paper: Injection Grouts and CIPP Lining Revitalize Buried Assets on Treasure Island

Michael Helfrich, Joyce T. Velitschkowski, Don Rigby NASTT’s 2016 No-Dig Show 2016

  • Injection Grouts and CIPP Lining Revitalize Buried Assets on Treasure Island

Brochure: Sewer Grouting - Mainlines, Laterals and Lateral Connections


  • Sewer Grouting Brochure - Mainlines, Laterals and Lateral Connections

Strategic, Cost-Effective I&I Reduction in Wisconsin

Angus W. Stocking, L.S. Trenchless Technology Magazine 2015

  • Wauwatosa’s short term solution - chemical grouting of sewer lateral connections to reduce I&I - has worked out so well that long-term efforts may not be needed at all.

NASSCO Tech Tips - Understanding the Chemical Grout Process

Tech Tips from NASSCO - Dick Schantz Underground Construction Magazine 2012

  • Chemical grouting is one of the olderst techniques used to stop water infiltration into sewer collection systems, Unfortunately, it is also one of the misunderstood.

Magazine Article: 'Grout First,' Right Answer for Sullivan's Island, SC

Don Rigby Trenchless Technology 2016

  • Greg Gress, manager of sewer and water for Sullivan’s Island, S.C., just completed the community’s CMOM self-assessment of its collection system. The condition assessment clearly indicated 90% of Sullivan’s Island problem was infiltration and inflow (I/I)

Magazine Article: NASSCO Report: Grouting

Infiltration Control Grouting Association (ICGA) Trenchless Technology 2016

  • Think You Know Municipal Grouting? Think Again - Reeducate! To further the objectives of ICGA, reeducation is now core to its mission, as injection grouting has experienced monumental advances in the last decade, with more to come.

NASSCO Report: Past, Present and Future of Municipal Grouting

NASSCO's Infiltration Control Grouting Association (ICGA) Trenchless Technology May 2016

  • This year the municipal grouting industry celebrates 50 years as the original trenchless technology. It is appropriate to honor our past, but - more importantly - prepare for the future and the renewed focus on our failing infrastructure.

NASSCO Tech Tips - Injection Grout Specification Guideline Aligns Contractors, Engineers and Municipalities

Tech Tips from NASSCO - Don Rigby Underground Construction Magazine 2016

  • The birth of a specification guideline begind with a need. It is born from a process of collarboration and consensus among mulit-disciplined stakeholders. After two years, the first suggested standard specification on grouting was born.

Magazine Article: Chemical Grouting: An effective tool against groundwater infiltration

Andrew Topf Canadian Underground Infrastructure 2014

  • Groundwater infiltration of sewer pipes is a common problem encountered by municipalities, especially those with aging infrastructure
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