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.
Monday, April 16th - PM
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.
Tuesday, April 17th - AM (1st Session)
Track 3
HDD Transmission Case
Studies - Team Leader: Mark Knight, Moderator: Michelle Lostra
Ronald Brunton, Fluor, and Dan Callnon, Cherrington
This paper is a case study describing the planning, engineering
and construction of two 3100-ft long crossings across San Diego Bay for
new and future 69kV electric transmission lines to Coronado Island from
downtown San Diego.
Brian Dorwart, Haley & Aldrich, Inc. and
Samuel T. Ariaratnam, PhD., P.E., Arizona State University
This paper discusses the present state of practice for heat
dissipation in these restricted access applications, the expected performance
of these applications, and thoughts for developing better technology for
this problem.
This paper describes a recent project involving the installation
of a 4200' river crossing with a HDD through solid rock in the Canadian
north during the winter months.
James Kwong, PhD, P.E. and Jeff Kalani,
P.E., Yogi Kwong Engineers, LLC; and Glenn Okita, P.E., Dept.
Design & Construction City & County Honolulu
This paper describes and compare problematic
geotechnical, design and construction management approaches
versus geotechnical design and construction management approach
that lead to successful completion of microtunneling installation
of 10,000 feet of 48-inch sewer and 30 shafts in problem soils,
privates properties prone to damages and under very difficult
traffic related constraints.
Robert A. Kahl and David C. Mathy,
DCM Engineering; Tim Healy, NAPA Sanitary District; and Ted
Whiton, Winzler & Kelly
This paper describes the design and construction
of twin sanitary sewer siphons within a 72-inch steel
casing installed by microtunnel pipejacking beneath the Napa
River in downtown Napa, California.
Jordan C. McCormack, Wade Trim, Inc.;
Bob Ericsson, Northeast Ohio Regional Sewer District; and Mike
Piepenburg, Hatch Mott MacDonald
This paper describes the engineering practice
used to design and construct a small diameter combined sewer
in restrictive alignment conditions including tunneling under
State Highway bridges and soft ground.
Tuesday, April 17th - PM
Track 3
HDD:
Water & Wastewater, Case Studies - Team Leader: Brian
Dorwart,
Moderator: Jim
Hoggatt
Steve Deering, P.E., Dudek & Associates,
Inc., Chandra Collure, P.E., City of Solana Beach and Craig
Camp, Jacobs Associates
This paper describes important elements of design,
permitting¸ easement acquisition, and construction of 3,000
feet of HDD sewer forcemain installation across a sensitive
coastal lagoon and 1,000 feet of PVC structural rehab.
Kim Staheli, PhD., P.E., and Michelle
Ramos, L.E.G., P.E., Bennett/Staheli Engineers
This paper presents design and construction issues
associated with a 30-inch DR 9 2¸600 ft HDD Installation beneath
the Willamette River. The paper also presents lessons learned
during construction. Contractor prequalification was used to
ensure an experienced HDD contractor was used to complete the
work. A comparison of predicted and actual installation loads
is also presented in the paper.
Brian L. Woodworth, PE, Wade Trim,
and Mark Gahry, Charter Township of Brownstown, Michigan
This paper describes the use of directional drilling
to install a sanitary force main in unstable soils and protects
a historic corduroy road constructed during the War of 1812.
Thomas A. Traina, P.E. and Robert
M. Bellucci, P.E., King Engineering Associates and Ralph R.
Carpenter, M.ASCE, American Ductile Iron Pipe Company.
This paper will identify the many issues that
were addressed in the planning and design of the water transmission
lines that extended from Tampa Bay Water's distribution facilities
within Hillsborough County into Pasco County. The primary focus
will be on the permitting and successful crossing of Trout
Creek using HDD and flexible joint ductile iron pipe.
Wednesday, April 18th - AM
Track 3
Microtunneling:
Construction Issues, Team Leader: Glenn Boyce, Moderator:
Bob Ericsson
Andrew J. Finney and Steven W. DeCou,
CH2MHill; and, Lysa Voight, Sacramento Regional County Sanitation
District
This paper presents shaft construction case histories
including: the relative merits of secant-piles and sunken concrete
caissons in hard ground; stabilization of saturated soils during
launch; and potential rebound and settlement of shaft foundation
soils.
Mike Jaeger, PE, Covellow Group; Ray
Post, Michels Pipeline; and Dan Breg, and Mike Cole, EPC Consultants
This paper describes and evaluates the design and
value engineering changes for microtunneling and directional drilling
on the LNWI project in West Sacramento, California.
9:15 AM
Comparison of Risk Management Strategies for
Microtunneling
Ulf G. Gwildis, and Michael B. Gilbert,
Camp Dresser and McKee
The paper compares two microtunneling projects where
the risk management strategy focus varied depending on the relative
importance of risks associated with successful completion of the
tunnel and those associated with minimizing environmental impacts.
Kim Staheli, PhD., P.E., Bennett/Staheli
Engineers
This paper presents the challenging aspects of crossing
beneath the Green River with microtunneling through wood, cobbles,
and boulders. The Contractor filed a DSC claim prior to
tunnel construction, requiring a unique contracting arrangement
for the microtunnel construction. This paper presents the
lessons learned from tunneling and contract management.
