Tuesday, April 29 – AM Sessions (1st Session)

Time

Paper Title

Author(s)

Description

Track 1: New Materials and Methods, Session Leader: Isabel Tardif, CERIU

8:00 AM

Kevan C. Taylor, Proline Technologies NA and Wesley Cobb, Proline Technologies NA

This paper describes the technology and the advantages of using air and steam as opposed to water as the means for inversion of large and small diameter for CIPP.

8:25 AM

Erez Allouche, Trenchless Technology Center; Carlos Montes, Trenchless Technology Center; Ivan Diaz, Trenchless Technology Center; and George Vernon, Mill Creek Consultants

This paper describes the development and testing of a geopolymer mix design optimized for field rehabilitation of wastewater conveyance systems in municipal and industrial settings.

8:50 AM

New Developments in Liner Design Due to ATV-M 127-2

Bernard Falter, Dept. of Civil Engineering, University of Applied Sciences, Munster, Germany

This paper discusses the German code ATV-M 127-2, first published in 2000 for the design of linings to rehabilitate sewers. These guidelines have proven helpful in finding optimum wall thickness of liner materials. This paper reports on the new clauses that have been introduced into the second edition.

9:15 AM

Michael Delzingaro, Godwin Pumps and Stephanie Morgan, Godwin Pumps

This paper addresses the use of automatic controls in temporary bypass applications¸ using real examples to demonstrate improvements in equipment efficiency¸ longevity¸ and reliability and site safety.

9:40 AM

Root Control: A Study in Planning¸ Performance and Patience

Gopal Guthikonda, P.E., City of Austin Water Utility and Roman D. Grijalva, P.E., King Engineering Associates/Austin Clean Water Program

This paper describes the implementation of a Root Control Pilot Program by the City of Austin¸ Texas, aimed at determining the effects of the application of Diquat Dibromide on root intrusion within wastewater pipes.

Track 2: Wastewater Condition Assessment, Session Leader: Collins Orton, TT Technologies Inc.

8:00 AM

Assessment of Damage to Rigid Sewer Pipes and Erosion Voids and Design Implications

Ian D. Moore, GeoEngineering Centre at Queen's - RMC

This paper discusses the results of CCTV inspections of damaged rigid sewers, using computer analysis of pipe deformation due to erosion voids. Effect of soil and pipe damage on liner performance is quantified¸ considering fluid and earth loads.

8:25 AM

Assessment of CIPP Liner Performance in Contaminated Soils

Derek Potvin, Robinson Consultants Inc.; Erika Waite, City of Hamilton, Ontario; and Kim Howie, Robinson Consultants Inc.

This paper covers the results of a study initiated by the City of Hamilton, Ontario, to examine how soil and groundwater contamination may be affecting the condition of CIPP lined sanitary sewers.

8:50 AM

Kevin Colvett¸ Assistant Director, Department of Water & Sewer¸ City of Brentwood¸ Tennessee; and Sanjiv Gokhale, Department of Civil Engineering¸ Vanderbilt University

This paper discusses the analysis and findings of three UV-cured liner projects to be completed by end of 2007 and presents an analysis correlating physical deficiencies using the NASSCO system to actual measured I&I in helping determine the ideal candidates for lining.

9:15 AM

An Experimental Study of Soil Erosion Around Leaking Pipes

Sherif Kamel, Civil Engineering & Applied Mech., McGill University and Mohamed Meguid, Civil Engineering & Applied Mech., McGill University

This paper describes the experimental investigation conducted to examine the effects of different parameters (e.g. crack size¸ location¸ soil type¸ water head¸ etc.) on the shape and extent of erosion voids developing around a leaking pipe.

9:40 AM

From Identification to Removal - A Case Study of a Successful I/I Removal Program

Jeremy S. Miller, Gannett Fleming, Inc.; Joseph A. Strauch, Gannett Fleming, Inc.; and Steve Campbell, Hampden Township Sewer Authority 

This paper describes a comprehensive sewer system condition assessment program implemented by a municipality in response to an excessive I/I problem.  Multiple trenchless rehabilitation techniques were utilized for sewers and manholes.

Track 3: HDD Case Studies and Innovative Technologies, Session Leader: Brian Dorwart, Haley & Aldrich

8:00 AM

Operation of Obstacle Detection GPR Designed for Use on HDD Machines

David Hanson, Vermeer Mfg. Co. and Kiran Kothari, Gas Technology Institute

This paper describes the use and test results of drillhead mounted GPR for HDD operations.

8:25 AM

Soil Response Considerations During HDD

Mathew Francis¸ PE, URS and Richard Stauber¸ PE, URS

This paper describes HDD field observations of borehole soil response conditions as they relate to recent numerical and analytical studies and provides guidance for assessing borehole stability under various soil conditions.

8:50 AM

Collins Orton, TT Technologies, Inc.

This paper deals with large diameter HDD pipeline projects and the use of pipe ramming HDD Assist techniques. Several high profile case studies are presented.

9:15 AM

HDD Design & Execution: Intersect Drill with Significant Elevation Change and Artesian In-Flow

George Taylor, Entec Inc. and Grant Jamison, Entec Inc.

This paper illustrates the application of science and technology in the effort to design a solution for one of the most difficult HDD projects ever attempted in the rugged Eastern slopes of the Canadian Rockies.

9:40 AM

Finding Obstacles During HDD Operations

Robert Cribbs, SoniPulse Inc.; Gerry Pittard, Maurer Technology Inc.; and Kiran Kothari, Gas Technology Institute

This paper describes the use of acoustic and electromagnetic sensors to detect objects/pipes near the drillhead for HDD operations.

Track 4: Challenging Conditions for Microtunneling, Session Leader: Glenn Boyce, Jacobs Associates

8:00 AM

Differing Site Condition Claims and Trenchless Projects

David Mathy, DCM Engineering; Joseph Covello, The Covello Group; and Marc Gelinas, DCM Engineering

This paper examines differing site condition claims on trenchless projects. The paper observes that there is critical need for geotechnical information¸ contract documents and construction management practices specifically tailored to trenchless construction methods.

8:25 AM

Steven W. Hunt, CH2M Hill and Andrew Finney, CH2M HIll

This paper addresses methods of minimizing ground water inflows and lost ground when launching and receiving microtunnel boring machines.

8:50 AM

Analysis and Mitigation of Settlement Risks in New Trenchless Installations

Matthew Wallin, Bennett Trenchless Engineers; Kathryn Wallin, Bennett Trenchless Engineers; and David Bennett, Bennett Trenchless Engineers

This paper presents methods for identifying settlement risks¸ estimating potential settlements¸ mitigating settlement hazards and monitoring construction settlements for trenchless projects including microtunneling¸ pipe jacking and HDD.

9:15 AM

Ballard Siphon Replacement Project

Michelle Ramos¸ PE¸ LEG, Staheli Trenchless Consultants and Kimberlie Staheli¸ PE¸ PhD, Staheli Trenchless Consultants

This paper describes the risk assessment¸ and feasibility and design efforts associated with replacing the Ballard Siphon, twin 1¸365 foot long¸ 36-inch diameter¸ inverted wood-stave siphons¸ built in 1936 which traverse under Seattle’s Salmon Bay.

9:40 AM

Paper to be determined