Dec Downey, PhD. and John Heavens, PhD., Jason
Consultants Group, and Simon Ngo, U Tech Engineering Co Ltd
This paper reviews CIPP “stand alone,” or “fully structural”
solutions¸ and identifies the key issues to be resolved. The
paper includes a review the principles and purpose of pressure pipe lining,
and the classification of structural capability in AWWA Manual M28, ASTM
F-1216 and the relevant CEN/ISO standards. The criteria used to differentiate
fully structural, semi structural and non structural capabilities is also
discussed.
This paper addresses site specific challenges inherent in
rehabilitating large diameter non circular, concrete box culverts using
the cured in place pipe methods described in ASTM F 1216, as well as ASTM
F 1743. This paper details pipe preparation requirements including,
corner grouting to allow for fully deteriorated design modeling as a large
bore non-circular case. The paper focuses on two case histories detailing
the design thru installation.
Kamran Sarrami, City of Toronto, and Mark Knight,
PhD., University of Waterloo
This paper describes the need for high quality test results
for the development of a long-term capital works program, results of a
detailed test program completed by the Centre for the Advancement of Trenchless
Technologies that include over 10,000 hours of creep testing data. The
paper also presents lessons learned and the need for third party testing.
This paper addresses potential drawbacks and benefits of
the different CIPP installation methods. The paper also identifies items
that need to be included in construction documents to minimize risks for
all parties.
This paper discusses the design theory and product features
of Insituform (CP) (a fiber-reinforced version of Insituform’s CIPP technology). It
also details industry standards testing and the application envelope for
this technology. In addition, case studies of successful applications
will be presented.
Track 2
Condition
Assessment - Team Leader: Bob Webb, Moderator: Chris Perkins
Bruce Corwin, Camp Dresser and McKee;
Michael Zacharia, City of Roseville; and Mike Fisher, Kimley
Horn Associates
This paper describes the methodology used by
the City of Roseville, California for conducting a condition
assessment of its wastewater collection system. The
paper also discusses the logistics of staffing and resource
planning, the defect coding criteria, inspection techniques,
prioritization criteria, and recommended improvements.
Herman Ng, and Gary Fei, ISL Engineering
and Land Services; and Ken Chua, and Michael Kan, City of Edmonton¸
Drainage Services
This paper presents the City of Edmonton's approach
for the design of the lining based on the type of defect and
ovality of sewer pipes. The decision to use spot, partial or
full reline repair is selected based on cost effectiveness
and the special condition of each sewer pipe. The results of
applying this approach in the rehabilitation of the Crestwood
neighborhood is discussed.
Mark Holley, Pure Technologies, and
John Galleher, San Diego County Water Authority
This paper examines the use of a combination
of electromagnetic inspection, long-term acoustic monitoring
and comprehensive dynamic risk management modeling to assess
the remaining time to failure for pipe while protecting against
spontaneous rupture. This approach allows agencies to
optimize PCCP management and offers a cost-effective solution
to assuring pipeline integrity.
Robert "Bud" Swensen, Project
Engineering Consultants, Ltd., and Steve Weber, Clark County
Water Reclamation District
This paper presents the results of an assessment
of the Clark County Water Reclamation District (CCWRD), Las
Vegas Valley, collection system. CCTV investigations of the
interceptor found the Crosstown Interceptor PVC-lined RCP to
be in generally good condition but repairs of the detached
weld strips will be required in the near term to deter corrosion
of the concrete in the sewer line.
James Shelton, Malcolm Pirnie, Inc.,
and Mike Harmer, New Castle County
This paper discusses how the physical condition
assessment of the Northcrest and Afton neighborhoods in New
Castle County, DE drove the selection of rehabilitation technologies,
how specific technologies were selected, how the construction
of these was accomplished, and how effective these methods
were in reducing I/I. The paper includes cost data and pre-
and post- rehab effectiveness flow data from the project.
Track 3
HDD:
Case Studies - Team Leader: Dave Bennett, Moderator: Jamie
Hannam
Dave Bennett, P.E., PhD., Bennett
Staheli Engineers and Neil Woodroffe, Arizona State University;
and Glenn Duyvestyn, Associated Engineers
This paper discusses design, permitting, and
construction issues associated with the pipeline installation
in the Netarts/Oceanside Sanitary District, Oregon. Design
issues included avoiding gravels and cobbles, working on the
beach, huge elevation changes, and unknown fill materials.
Construction issues included controlling drilling fluid pressures,
steering control, drilling through unknown embankment materials,
and staging and fusion welding the HDPE pipe. This paper also
presents lessons learned during construction.
Mark Havekost, P.E. Jacobs Associates,
and Scott Bickel, P.E., Port of Tacoma
This paper presents design and construction challenges
for four parallel HDD crossings beneath the Blair Waterway
shipping channel at the Port of Tacoma. The crossings consisted
of a bundle of HDPE conduits for communication, and for electric
distribution transmission lines. A fast tracked design effort
and pro-active coordination with utility owners was required
so that these utility owners had enough time to install new
utility lines prior to commencement of the widening work. Challenges
included limited construction space at the Port, maintaining
vehicle and rail access, unmapped underground utilities, timber
piles and pile foundations and wood piles.
Kevin McHugh, Paul Gabriel, and Phillip
McNulty, Environmental Partners Group, Inc
This paper presents the results of a feasibility
study of alternatives to bring utility service to Peddocks
Island located between Hull and Quincy, Massachusetts. The
paper describes the selection of horizontal directional drilling
approximately 2,000 linear feet beneath Hull Gut, a major shipping
channel for Boston Harbor, from the Hull main land to Peddocks
Island.
Brian Dorwart, and Nick Strater,
Haley & Aldrich, Inc.; Pat Ambrosio, Hallan Construction;
and Ron Halderman, Mears
This paper focuses on the hurdles faced during
the fast-track trenchless design process and the methods used
to install approximately 47 miles of high voltage, direct and
alternating current electronic transmission cables between
Long Island, New Jersey, and Sayreville, New York. The paper
focuses on identification and management of project risk.
Mathew Francis, P.E., and Rick Cox,
P.E., URS, Salt Lake City; Richard Harada, P.E., Wilson Okamoto
Corp., Honolulu; and Cristobal Castro, P.E., URS Settle
This paper examines key determinants for selecting
HDD. These issues are discussed in the context of several
case histories, some where HDD was selected, and some where
HDD was initially preferred but in the end was not used. Contrasting
examples are given for how the technology decisions developed
and were concluded. Analytical comparisons are provided
and simplified conclusions are presented to help identify when
clear HDD advantages or obstacles are present.
Track 4
Pipe Replacement
- Team Leader: Cindy Preuss, Moderator: Jonathan Lee
Cliff Brady, City of Calgary, and
Wing Chan, Hammerhead
This paper discusses the current state of the
Calgary Alberta’s sewers, and the application of pipe bursting
techniques to replace sewers in challenging residential and
in public places. This paper further highlights the efficiency,
cost effectiveness, social impact (or lack of) of using the
pipe bursting process, its limitations, lessons learned and
steps taken to ensure future applications of this trenchless
pipe line replacement process serves the public.
This paper discusses the City of West Jordan,
Utah's decision to use pipe bursting to upsize from an existing
10-inch concrete pipe to 18-inch HDPE. The paper notes that
bursting allowed the contractor to avoid lane closures, right-of-way
constraints, and impacts to communication lines as well as
intermediate and high-pressure gas lines. Additional
benefits included construction during winter conditions, an
expedited construction schedule, and cost efficient bid prices.
Ben Dias, Jenn Veenstra, and Ken
Nguyen, City of Vancouver
This paper presents the City of Vancouver's use
of a double bursting head consisting of a cutting edge and
a pneumatic tool to help burst through the heavily rooted soil.
The tool itself housed a 6 inch high density polyethylene (HDPE)
pipe with a 5 1/8 inch burst tool inside it on which a second
four inch pipe was piggybacked. Low strength concrete was used
to backfill and eliminate any existing voids.
Collins Orton, TT Technologies, and
Kent Von Aspern, P.E., Carollo Engineers
This paper discusses the City of South San Francisco
project to pipe burst an existing VCP gravity sewer and replace
with HDPE pipe. Many components combined to make this project
extremely challenging. An abbreviated list includes: significant
upsize, large diameter host pipe, geology with high groundwater
conditions and aggressive soil, traffic concerns, significant
truck traffic at all hours, large amount of host pipe debris.
Monday, April 16th - PM — Technical Paper Sessions
Shanhai Guan, Erez Allouche, and
Mike Baumert, Trenchless Technology Center/Louisiana Tech Univ.,
and Kevin Bainbridge, City of Hamilton
This paper describes the results of studies for
evaluating the burst-pressure of a GFRP CIPP liner used in
the rehabilitation of cast-iron water distribution systems.
The relationships between the diameter and shape of the holes
in the host pipe and the liner’s 50-year burst pressure were
studies numerically and experimentally. The results from these
evaluations were compared with predictions made using the analytical
solution given in ASTM F 2207. The effect of cyclic loading
was also examined.
Robert K. Lee, P.E., Malcolm Pirnie,
Inc., and Steve Ferry, Microbac Laboratories, Inc. - Hauser
Division
This paper addresses the various ways to test
and anticipate the long-term performance of CIPP liners and
some options available to owners and engineers if test results
are not as expected.
This paper describes the steps needed to assure
a tested and verified level of quality for cured-in-place pipe
that can be done cost effectively in the field.
Track 2
Condition
Assessment - Team Leader: Doug Wilson, Moderator: Bill
Boyes
James Shelton, Malcolm Pirnie, Inc.,
and Kathryn Moore, Fairfax County MSMD
This paper discusses the drivers of the Fairfax
County, Virginia rehabilitation program and explains the program
approach to the multi-year assessment and rehabilitation program.
The paper also discusses the use of multiple assessment technologies
and data capture/management methods, IDQ-type contract vehicles,
and the findings from the assessment and rehabilitation of
the first 50 miles of this program.
Terry Moy, P.E., Gill Inouye, P.E.,
and Eric MacDonald, E.Woolpert, Inc.
This paper highlights the
benefits of geographic technology’s streamlining capabilities.
Field computers with integrated functionalities provide the
ability to navigate, inventory, inspect, and perform condition
assessments in real time, in addition to collecting field
data.
John P. Schroeder, P.E., and Rodney
Moeller, Camp Dresser and McKee; and Tim Fallara, City of Columbus
This papers a comprehensive infiltration and
inflow (I/I) remediation plan for the City of Columbus. The
paper reviews the identification and quantification of public
and private sources of I/I, and provides conceptual designs
to reduce I/I and reduce basement backups.
Mario Mazza, Indianapolis Department
of Public Works, and Patrick Stevens, ADS Environmental Services
This paper describes Indianapolis' innovative
approach to consolidating its flow data into a system usable
city-wide and a system providing real-time alarming of wet
and dry weather overflows.
Track 3
Microtunneling:
Case Studies - Team Leader: Don Del Nero, Moderator: Terry
Smith
This paper provides an overview of the Big Walnut
Augmentation Rickenbacker Interceptor (BWARI) project in Columbus,
Ohio to alleviate sewer overflows. The paper discusses planning,
design, permitting, and construction. The main tunnel used
an earth-pressure balance machine and pre-cast concrete segments.
This paper presents an assessment of methods
to significantly reduce microtunneling by proper design, pre-qualification
of the contractor, operator, Microtunnel Boring Machines, and
careful selection of pipe materials for the project in question.
Lori Haslinger, City of Toledo,
David Gill, No-Dig Pipe, and Jeff Boschert, National Clay Pipe
Institute
This paper discusses the process of Pilot Tube
Microtunneling, the reasons that it was chosen as the installation
method over open cut, project statistics and the effects that
it had on the neighborhood.
Track 4
Laterals
- Team Leader: George Kurz, Moderator: Lysa Voight
This paper describes how the implementation of
Trenchless Technology in the City of Victoria has saved the
taxpayers valuable dollars. City crews have shown that Trenchless
Technology is the wave of the future for Victoria.
Mark Wade, and G Alan Johnson, Wade & Associates,
Inc.
This paper describes critical issues considered
in the design of a trunk sewer and the efforts to mitigate
potential risks that characterized the project area.
Joe Dvorak, Department of Bureau
of Environmental Services, City of Portland, Portland, and
Larry Kiest, Jr., LMK Enterprises, Inc.
This paper discusses how the City of Portland
has successfully attained a wealth of experience and knowledge
through years of training and technology transfer. This experience
and approach has allowed the city’s crews to perform sewer
repairs in a matter of hours that in some cases would normally
consume weeks of heavy construction with serious disruption
to the public at extreme cost.
