Manholes Files

Costs of Chemical Grout (Would You Spend)

David Magill Avanti 2009

  • Are you spending thousands of dollars each year treating clean water? Recent studies and over 50 years of experience indicate that America's first trenchless technology is still the best, most cost-effective, long-term defense against infiltration.

Rembco Undertakes New Project for Hazardous Waste Containment at ORNL

Avanti News + Views 2005

  • "Locking hazardous materials in place is almost always safer and more cost effective than removing them for treatment, and there typically is no ongoing maintenance" -Clay Griffin, President of Rembco Geotechnical Contractors, Inc.

Acrylamide Grout Aces 20-Year Test

Greg Thompson Trenchless Technology 2008

  • Grouting has occasionally been thought of as a more temporary solution, a stop-gap. But recent testing of two 20-year old acrylamide grout rehab projects indicate that grout can certainly stand the test of time.

Preventing Leaks While Sinking Tunnel Shafts

American Cyanamid AM-9 Technical Manual 1960

  • Problem: Twelve manhole shafts for a mile-long tunnel, part of a trunk storm sewer being constructed 50 feet below a Dallas Freeway, had to pass through 20 to 25 feet of saturated sand before reaching bedrock.

How to Eat an Elephant

Jay Guillot Water Control Quarterly 2002

  • Controlling inflow and infiltration is always an issue with wastewater collection systems. For the purpose of eating an elephant, we will concentrate on infiltration.

How to be Assured of a Quality Grout Project

Public Works Staff Public Works Magazine 1996

  • Chemical grout has been used successfully for more than 30 years to stop leaks in sewer systems. However, not all installations have been equally successful.

Borough of Downington Stops Infiltration

Rick Harris, Borough of Downingtown Water Control Quarterly 1999

  • Like most towns or cities with public sewer systems, Downingtown was experiencing high amounts of inflow and infiltration (I & I).

How to Plan a Chemical Grout Program

Avanti Public Works Magazine 1995

  • How to plan your chemical grouting program: Most infiltration enters sewers through 1. Manholes, 2. Pipe Joints and 3. Service Connections and the first few feet of the service line.

NASSCO Performance Specification Guideline for Manhole Rehabilitation

Various NASSCO 2013

  • NASSCO Performance Spec for Manhole Rehab
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