Manholes Files

Technical Manual: Expanded Gasket Placement (EGP) Technique

Avanti 2011

  • The EGP Technique: Expanded Gasket Placement Technique Using AV-219 Oakum™ and AV-202® Multigrout

NASSCO Tech Tips: Curtain Grouting Manholes and Underground Structures

Daniel Magill NASSCO 2010

  • Picture this: You’re standing in a brick manhole that is 50 years old and leaking extensively all around you. You’ve already been working for over an hour and for every leak you stop, several new leaks pop up. Now what?

Grout Workshop: Stop Water Infiltration Now, Not Later

Traci Read, Senior Editor Underground Construction Rehabilitation Technology 2010

  • Stop water infiltration now, not later

Magazine Article: Municipalities Use Chemical Grout to Stretch Sewer Rehabilitation Budgets

Public Works 2000

  • Public works professionals maintain their facilities with the funds available rather than the funds needed. That situation is not likely no change, but some professionals have learned to stretch their pipeline rehab budgets further than ever before.

Magazine Article: Stopping Infiltration with Chemical Grouting

Steve Henning Trenchless Technology 2003

  • The U.S. Environmental Protection Agency credits manholes with contributing as much as 40 percent of infiltration into sewer systems.

Magazine Article: Re-Emergence of Chemical Grout

Public Works 1995

  • Recent studies and over 40 years of experience indicate that America's first trenchless technology is still the best, most effective, long-term defense against infiltration.

Magazine Article: Solving Trunk Sewer Installations Across Growth Faults

Brent Pettersson, P.E., Brown & Root Rehabilitation Technology 1996

  • The City of Houston has two unique grouting projects in place that hold promise to support trunk sewer lines installed inside primary-lined tunnels crossing faults.

Magazine Article: Avanti Leads in Industry Development & Education

Allen Thomas Trenchless Technology Magazine 1994

  • Trenchless Technology - June 1994 - Avanti leads in industry development and education: In 1978 when Avanti International was formed by four rehab contracting companies, David Magill was hired as its first employee and the company's first president.

Reports on the Longevity and Effectiveness of Chemical Grouting of Sewers

Avanti 2005

  • This brochure is intended to document that chemical grouting is effective and long lasting. The case studies contained herein have been taken from numerous engineering and municipal publications.

Magazine Article: Sewage Pouring into Lakes, Streams

Tom Vandenbrook USA Today 2002

  • SSO 700 is an unremarkable spot. Just a pipe, hidden by trees and brush, emptying into Mill Creek near downtown Cincinnati.

Magazine Article: Save Money, Seal Service Laterals with Chemical Grouting

Public Works Magazine 1997

  • The more we learn about our sewer systems, the more we discover how much customer service lines contribute to the expensive problem of groundwater infiltration.

Costs of Chemical Grout: What 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.

News: 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.

Magazine Article: 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.

Case Study: 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.
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