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Research
CUIRE promotes strategic
partnerships across the disciplines, and integrating a dynamic
network of expertise to address
Underground Infrastructure issues.
Current Research
Projects


  
The U.S.-China
Workshop on Trenchless Technology and Critical Underground
Infrastructure Technologies will be held at the China
University of Geosciences (CUG) in Wuhan, in October 2007.
The U.S. team includes well known researchers from major
universities and research centers. This award will provide
travel support for U.S. participation in the workshop, where
researchers from both countries will review the
state-of-the-art of critical underground techniques, the
experiences in China to-date, and exchange ideas on
development of research strategies.
Dr. Mohammad Najafi,
Director of the Center for Underground Infrastructure
Research and Education (CUIRE) at the University of Texas at
Arlington (UTA), will be the Principal Investigator (PI) on
this project, assisted by several Co-PIs indicated in this
proposal. The Chinese collaborators include:
Dr. Baosong Ma,
Professor of Civil Engineering (CUG), the foreign organizer
of this unique workshop,
Dr. Huiming Tang,
Dean of College of Engineering (CUG), and
Dr. Xiaoming Wu,
Professor of Civil Engineering (CUG). Dr. Tang and Dr. Wu
will assist Dr. Ma with logistics, coordination, publicity,
and organization of Chinese contributions to the research
agenda.

The main objective of this project is to provide a
comprehensive manual that can be used as a reference to
municipalities and government agencies providing a practical
guide to setup asset management strategies as well as a
teaching material for conferences and workshops.

Outside
Plant Consulting
Services,
Inc.
U.S. Department of
Transportation
The objective of this unique
project is to provide a cost-effective system
(architecture, hardware, practices, etc.) for
“buried” construction to facilitate future
upgrades and maintenance activities, and
encourage efficient joint buried construction
practices.
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ASCE Manual of Practice for Pipe Ramming Projects

Pneumatic
pipe ramming is a well-established trenchless methods that
is widely used for the installation of steel pipes and
casings. Pipe ramming method is mainly used for the
installation of utilities at road and railroad crossings.
This is an economical alternative to open trenching whereas
it can reduce pavement damage, traffic disruptions and the
social costs associated with pipeline installations. This
manual of practice is being prepared to assist engineers,
contractors and owners to design and execute pipe
installation projects effectively, safely and in conformance
with project requirements and site conditions. The
objective of this manual is to give a clear understanding of
the method capabilities and limitations, to outline
important design and construction considerations and to
identify potential problems and prevention measures, thereby
installing confidence in the appropriate use of the method.
 
This project includes
preparation of a market study for large diameter culvert and
sewer system in the United States.
A
survey will be prepared and will be sent to U.S. cities,
municipalities, sewer districts and DOT’s to verify state of
their large diameter (more than 48 in.) gravity sewer and
culverts. The information requested on the survey will
include: ·
·
Length
· Age
·
Diameter
·
Types of
materials
·
Types of
defects
·
Methods of
renewal used so far
·
Plans for
renewal work for next three years
·
Budget for
renewal work for next three years
The survey will be
administered by email, Website and followed up by phone
calls to receive a maximum number of responses. A target
response rate of 30% will be aimed.
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Buried Asset Management Institute --
International
BAMI-I


The primary objective of this project is to develop the
foundation for the establishment of an asset management
Center of excellence (AMCOE) to lead and support research,
education, outreach and development of asset management
practices. The secondary objective is to develop an
integrated asset management (AM) based curriculum guidance
document which will be made available to universities,
colleges, junior colleges, professional/trade associations,
leadership and job training programs, and water/wastewater
utilities and agencies.

Trenchless technologies –
in both new construction and the renewal of
existing pipelines -- continue to grow in
popularity and gain acceptance in the
municipal and industrial marketplace, in oil
and gas applications, and with state and
federal agencies. There is a continued need
to examine the success of trenchless
technologies and recent developments, so
that their current popularity and acceptance
will be sustainable and expansive in the
future.
The ASCE International Pipelines Conference
2007 is the ideal forum to take a look back
in order to help guide the industry into the
future. The theme for this international
event – Advancements & Experiences with
Trenchless Pipeline Projects –will highlight
the evolution of trenchless products,
processes, and projects, and emphasize
associated design, permitting, and
construction considerations.
The conference will focus on trenchless
technologies in paper presentations, plenary
sessions, a products and services
exhibition, and an awards program. It will
also offer two pre-conference workshops on
pipe ramming and trenchless research on
Sunday, July 7.
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| Project Tasks:
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Review various geo-environmental and mechanical
factors affecting the deterioration of culverts.
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Literature review and survey of DOT’s, we will
develop a database of trenchless
technology methods already used in culvert
structure and history of their performance.
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Consider standard testing data and would
consider all other information that
manufacturers can provide. We will include
available academic research and third party
testing to come up with a comprehensive database
of these technologies.
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For each of the technologies included in the
database, compile information on range of
application, diameter restrictions, type and
geometry of culvert they can be applied,
diameter and/or cross sectional reduction,
structural capability, hydraulic
analysis (roughness factor), construction
requirements, design life, life-cycle-cost,
chemical (corrosion) and mechanical properties,
maintenance issues and requirements, and other
important parameters specific to the needs of
MDOT, ODOT and other Midwestern states. All this
information will be verified through multiple
sources.
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Review inspection and maintenance requirements
of renewed culverts (such as how and what to
inspect). Each trenchless technology will
require a specific method of inspection.
Therefore, an inspection and asset management
methodology for trenchless renewal of culverts
will be developed.
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Provide modifications to be brought to buried
pipes technologies to be implemented on culverts
with emphasis on trenchless technologies.
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Collaborate with MDOT and ODOT to develop a
system for integration of this system with their
existing computerized system of asset
management. The system will help MDOT and ODOT
engineers select the best technologies given
culvert description and condition and will
provide them with risks, performance and cost
analyses as described previously.
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Offer educational programs in terms of two
workshops for MDOT and ODOT engineers to present
the result of this research project and train
them in the use of new asset management system
using trenchless technologies.
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Publish and present at TRB national convention,
major professional and trade conferences, and
publish at peer-reviewed journals such as ASCE
Journal of Transportation Engineering (JTE).
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| Student Involvement: |
Several graduate students and undergraduate
students will be working on this project under the
supervision of principal investigators. |
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| Modal Orientation:
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Highway |
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| P.I. Name & Address
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Najafi, Tayebi and Salem Center for Underground Infrastructure Research and
Education Department of Civil & Environmental Engineering University of Texas at Arlington Box 19308 438 Nedderman Hall Arlington, TX 76019-0308
Phone: 817-272-0507 Fax: 817-272-2630
najafi@uta.edu |
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| Project Objective: |
I) Develop inventory and condition assessment
protocols and business rules for
culvert structures. II) Validate and optimize above protocols and
business rules on the basis of field
pilot studies
in Michigan and Ohio. |
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| Project Abstract:
|
Asset management procedures for drainage
infrastructure systems are complex
issues. The first
and most important step in an asset management
initiative is the
establishment of asset inventory
and asset conditions. As stressed by MDOT and
ODOT,
the focus of any drainage infrastructure systems
should first focus on
geospatial inventory and
condition assessment in a format compatible with the
routine procedures of field operators and
inspectors. There is a need for
developing field
protocols and operational business rules for
inventory data
collection and management and
inspection of drainage infrastructures in terms of
type of data to be collected, frequency of
inspection, and analysis and reporting
mechanisms. Such protocols and business rules would be reviewed
and then
tested in small pilot studies for field
efficiency verification. This proposal fits well
with the strategic plan of MDOT and ODOT in terms of
focus on asset
management optimization. The results
of this research will enable MDOT, ODOT
and other
Midwest DOT’s to launch optimized drainage structure
asset
management programs that would significantly
reduce field problems. |
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| Task Descriptions:
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Task 1-Review of existing literature. Task 2-Review of various hydraulic, land-use changes
and mechanical factors. Task 3-Review of existing inspection, data analysis
and reporting methods. Task 4-Develop an inventory and inspection protocols
and business rules. Task 5-Synthesize the research findings into a
platform for a decision supports Task 6-Project review Task 7-Perform pilot studies in Michigan and Ohio to
validate the protocol Task 8-Collaborate with MDOT and ODOT engineers to
write a section on
inventory and inspection. Task 9-Write a final report documenting all research
findings. Task 10-Write several papers and articles to
disseminate research results
specifically for use of
other Midwest states. Task 11-Offer educational workshops for MDOT and
ODOT personnel to present
results of this important
research. Submit final report. |
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| Milestones, Dates:
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12 months, January 1, 2006 to February 28, 2007 |
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| Budget: |
$179,925 |
| |
| Matching Funds & %:
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MRUTC $74,668 (41.5%), MDOT: $20,000, ODOT $20,000,
MSU & UC: $34,668 |
| |
| Student Involvement: |
Several graduate students and undergraduate
students will be working on this
project under the
supervision of principal investigators. |
| |
| Modal Orientation:
|
Highway |
Staff Directory
Contact Information
Advisory Committee
Executive Committee
Traffic and Safety Division
Conference Calendar
Employment Opportunities
Newsletters
Annual Reports
Strategic Plan
Related Resources
What is Asset Management?
Other Definitions
News
International Activities
2001 NTAM Workshop
2003 NTAM Conferences
2005 NTAM Conference
TAM Today Website
Trans Mgmt & Policy Graduate Program
Short Course Resource Guide
Ongoing Education Activities
Curriculum Development
UW Transportation Society (UNITS)
UW Research Expertise Database
2006 Mid-Continent Research Forum
2004 Maintenance Quality Assurance Peer Exchange
2003 NTAM Conferences (Proceedings)
2004 National Transportation Week
MR-RST Technology Exchange Meeting
Short Course: Integrating Maintenance
2002 Diversity Workshop
2002 Conference on Library & Information Services
2002 Tribal Transportation Workshop
2001 NTAM Workshop
Current Projects 
Completed Projects 
Asset Management Pooled Fund
DVC Information Clearinghouse
FHWA Research & Development
Asset Mgmt Research from RiP Database
2006 Call for Pre-Proposals
02-03 Optimizing Investments in Lac Courte Oreilles
& Sawyer Counties
03-02 Synthesis of Data Integration Best Practices
04-04 Incorporating Road Safety into Pavement
Management
04-05 Optimal and Near-Optimal Resource Allocation
for Transportation Infrastructure Protection
05-02 Vehicle Classification from Single Loop
Detectors
05-05 Use of Functional Silos to Optimize
Decision-Making
06-03 Impact of Increased Freight Traffic on
Pavement Maintenance Costs
06-05 Meaningful Use of Collected Local Roads Data
and Information
06-06 Measuring the Benefits of Implementing Asset
Management Systems & Tools
06-07 Estimating Effect of Bicycle Infrastructure on
Use and Property Value
06-08 Asset Management Approach for Drainage
Infrastructure and Culverts
06-09 Upper Midwest Freight Corridor Study-Phase II
06-10 Compass 2005 Data Analysis and Reporting
06-11 Library Connectivity Pooled Fund
Administration/Marketing
07-01 Regional Pavement Performance Database
07-02 SWWRPC Roadwork Detouring and Crash Mapping
07-03 A Wisconsin Evaluation of a Tool to Estimate
the Economic Development Benefits of Highway
Projects
07-04 Frozen Road Operation Improvements
07-05 Measuring Access to Public Transportation
Services
07-06 Developing the Emerging Development Pressure
Index for Wisconsin
07-07 Second Generation Activity-Based Travel
Modeling System
08-01 Corrosion Protection Performance of
Epoxy-Coated Reinforcing Bars
08-02 Asset Management and Metropolitan Planning
Organizations
08-03 Optimal Investment Decision-Making for Highway
Transportation Asset Management under Risk and
Uncertainty
01-01 Summary of National Activities
01-02 Asset Management in Transportation-like
Organizations
01-03 Decision Making Criteria for Outsourcing
02-01 Optimal Resource Allocation For Buses
02-02 Multi-objective Decision Support Framework
02-04 Long-Range Intelligent Transportation
Strategies
02-05 Best Practices in Strategic Planning Linking
Budgeting Decisions
02-06 Twin Ports Superior/Duluth Intermodal Terminal
Requirements
03-01 Capital Preventative Maintenance Best
Practices
03-03 Regional Transit Traffic Simulation/Assignment
Model
04-01 GIS Tool to Measure Performance of Winter
Highway Operations
04-02 System Management and Monitoring of the
Columbus Freeway Management System
04-03 Infrastructure Management Decision-Making with
Condition Data Generated by Remote Sensors
04-06 Upper Midwest Freight Corridor Study
05-01 Transportation Asset Management Threshold
Levels
05-03 Business and Site Specific Trip Generation
Methodology for Truck Trips
05-04 Accelerated Construction Decision-Making
Process for Bridges
06-01 MQA Peer Exchange - Synthesis of Measures
06-02 Training Opportunities in Asset Management
06-04 Statistics Guide for MQA Programs
Mississippi Valley Freight Corridors Coalition
Traffic Operations & Safety Lab (TOPS Lab)
DeerCrash.Com
Wisconsin Highway Research Program
Wisconsin Transportation Center
Wisconsin ITS Alliance/Smartways
UW Madison Transportation Portal
Frozen Four (North Central Pavement Partnership)
Wisconsin Construction & Materials Support Center
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Past Research
Projects
 
The overall approach for this project was to compare the
hydraulic characteristics of the CIPP-lined and the host-CMP
culverts. First, we established the important geometric
properties of the CIPP and CMP barrels including their
Manning’s roughness. Next, we compared the hydraulic
performance of the Roger’s Creek culverts during projected
100 yr peak flow conditions (typical for design) in the
creek. Last, we evaluated how the geometric changes in the
culvert (loss of cross sectional area and reduction in
surface roughness) influence hydraulic performance of the
barrel when flowing full under outlet control conditions.
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Pipe Bursting Projects
provides the best and latest
practices for the design and construction of pipelines using
pipe bursting methods, with a special focus on building
pipelines under roads, railroads, and streets. This new
manual will be useful for new and experienced engineers as
it covers both introductory and advanced topics, including
history, recent innovations, documentation, typical
applications, and terminology from the planning through
construction phases. Utility owners, contractors, and any
other professionals involved in pipeline construction will
also benefit. Pipe Bursting Projects was prepared by
the Pipe Bursting Task Force of the ASCE Committee on
Trenchless Installation of Pipelines (TIPS), under
supervision of the Pipeline Division.

With an aging
underground infrastructure, ever-encroaching population
areas and increasing economic pressures, the burden on the
municipal agencies to efficiently prioritize and maintain
the rapidly deteriorating underground utilities is
increasing. Accurate forecasting of pipeline performance is
essential for prioritizing and risk management of the
underground infrastructure. The essential function of a
pipeline asset management system is to consider the pipeline
maintenance and improvement needs and to arrive at the
program of optimal rehabilitation, replacement, and
maintenance. Hence, the development of a pipeline condition
prediction model will be indispensable to the concerned
authorities in prioritizing the care and rehabilitation of
pipelines, and in pipeline asset planning and management.
This research developed a prototype Artificial Neural
Network (ANN) model for predicting the condition of sewer
pipes based on the historic condition assessment data. The
neural network model was trained and tested with acquired
field data. The developed model is intended to aid in
identifying the distressed segments of the overall sewer
pipeline network using a set of known input values. These
can then be directed toward assessing and prioritizing the
maintenance measures needed to prevent accelerated future
distress and eventual failure of sewer pipes.
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Horizontal auger boring methods are among
the most cost-effective and versatile techniques for
installing steel casing pipe under roads and highways. This
comprehensive manual covers the horizontal auger boring
method, providing the instructions for a safe, productive,
and efficient installation of pipelines for road crossings.
The manual is divided into five sections; the first section
is an introduction that includes history, recent
innovations, applicable documents, typical applications, and
a glossary of terms. The proceeding sections provide
important information on the planning, design,
pre-construction phase, and construction phases of the
horizontal auger boring methods. The last section includes a
list of references. New and experienced engineers, utility
contractors, and other professionals working in pipeline
construction will find this manual useful by providing
introductory and advanced topics for safe, cost-effective,
and productive design and construction of horizontal auger
boring projects.
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Proceedings of the Pipelines 2003 International
Conference on Pipeline Engineering and Construction, in
Baltimore, Maryland, July 13-16, 2003
 
New Pipeline Technologies, Security,
and Safety includes 200 papers, which were presented at
the Pipelines 2003 International Conference on Pipeline
Engineering and Construction, in Baltimore, Maryland, July
13-16, 2003. These Proceedings focused on application of
existing and emerging technologies for asset management,
condition assessment, pipeline renewal, pipeline protection,
and safety and security concerns. In addition, other timely
topics covered included: Geographic Information Systems;
Hydraulic Modeling; Risk Assessment and Management; Fiber
Optics in Utilities; Trenchless Technologies; Operation and
Maintenance; Seismic Effects on Pipelines; Pipe Locating
Technologies; Investigation Innovations; Freight Pipelines;
and Emerging Technologies.
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This project presents a
comparison of traffic delays and related costs involved
during utility construction using open-cut and
trenchless methods. A case study of two sites involving
utility construction is chosen and the traffic flow rate
was measured. Depending on the type of pipe installation
method used, the time lost and costs of delay were
calculated. The same is repeated for the alternate
method of pipe installation applying the same criteria.
The time and cost parameters were compared against one
another for a given site. These costs were added to the
social costs and the actual cost of construction. The
life-cycle costs are then analyzed and the best
alternate for that particular site is derived, using the
data from the case studies. The comparative curve gives
an estimate of the general data for a range of utility
construction. Based on the data from the case studies
and literature review of similar existing studies, the
information can be applied to a range of applications in
utility construction.
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Effects of Renewing
Underground Utilities in Better Use of
Land

This project examined
how renewal of old and deteriorating underground infrastructures will
promote efficient and cost-effective use of land. The project included
cost-benefit analysis of revitalizing old utilities and
its impact to reduce sprawling. By preparing a guideline
report, the project
provided tools for appropriate decision making process for the state of
Michigan.
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Development of a
Knowledge-Based Decision Matrix for Selection of Trenchless Technology
Methods

The main objective of this
research is to provide a prototype decision support system (DSS) to aid
in selection of an appropriate construction method for a new
installation or renewal of existing underground pipelines. This
prototype DSS introduces consistency to the decision-making process,
and enables decision-makers to select a certain trenchless construction
method to match the project conditions. The prioritizing module is
based on the application of the knowledge–based (expert) systems, which
combines the knowledge of the human experts and case studies with
mathematical calculations to obtain the desired priorities. The DSS
involves a relation database management system (RDBMS), a user-friendly
interface, and an output module to interact with the end user. The
developed relational database assists in identifying suitable
trenchless construction techniques that considers the factors that
account for technical, contractual and cost requirements of projects as
well as user specified preferences. In case of having more than one
suitable installation or rehabilitation method, DSS evaluates and ranks
them and, accordingly, suggests the most suitable one.
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- Field
Evaluation of Trenchless Road Crossing Methods

Ground displacements and borehole stability are always
of prime concern during trenchless technology
installations under pavements, and in close proximity to
existing buried utilities and structures. Stable
boreholes also relate to successful completion of the
projects. The Missouri Department of Transportation
(MoDOT), University of Missouri -- Columbia, Michigan
State University, and several industry participants have
joined forces to conduct a research program to evaluate
borehole stability. The objective of this research is to
study the cavity expansion within the soil caused by
pipe jacking, auger and guided boring and horizontal
directional drilling methods. The soil displacement in
the vicinity of the cutterhead, reamer and at the ground
surface will be evaluated. To conduct the research, an
actual field installation is underway at the University
of Missouri’s Capsule Pipeline Research Center during
the summer of 2002. In addition, an actual road crossing
with pipe jacking method was closely monitored. The
results of these unique field evaluations were
incorporated in the MoDOT specifications and guidelines.

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- The Fiscal
Impacts of Alternative Single-Family Housing Densities

Across
the nation, new residential development requires the
construction of new infrastructure. However, financing
the construction and maintenance of this infrastructure
has become a contentious issue because of the various
demands placed on local government budgets. The
objective of this study is to ascertain how costs for
certain infrastructures vary with the density of
single-family residential development. Specifically, it
examines how capital and life-cycle costs for roads, and
sewer and water lines vary with density. Only on-site
costs are examined, that is, the costs for
infrastructure located within subdivisions. We find that
life-cycle costs for roads and sewer and water lines
increase as density decreases. Annual user fees for
sewer and water cover the annual life-cycle costs for
these infrastructures at lot sizes less
than one acre. We did not observe a relationship between
annual life-cycle costs, expressed as a percent of
revenues (the sum of property taxes and user fees for
sewer and water), and density.
Key
words:
housing
density, infrastructure costs, and life-cycle costs
Download Final Report (PDF Format)
Any Feedback?
Click here to send comments, reviews and suggestions
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- ASCE
Emerging Concepts for the Design of Pipeline Renewal
Systems

The Emerging Concepts for the Design of Pipeline Renewal
Systems developed out of the efforts of the ASCE Task
Committee authorized by the ASCE Pipeline Division’s
Pipeline Infrastructure Committee (PINS). It includes
previously published ASCE papers presenting this topic.
During
1999 the PINS Committee formed the Task Committee for
evaluating the current calculation methodologies for
determining renewal liner design. It was determined by
PINS Committee during the 1990's and culminating in 1997
that the calculation systems were conservative as
employed. During January 1998, also an International
Trenchless Technology Research Colloquium at Louisiana
Tech University determined that a new calculation
methodology should be developed.
The
commonly used “Fully Deteriorated” calculation system
was based on the model used for trench installation of
Fiberglass Pipe. The evaluation of this model was of
prime concern to the Task Committee. It was quickly
determined that the so-called “Fully Deteriorated”
concept should be revised and basic fundamentals be
researched, reviewed and incorporated into a proposed
report. This task was completed and a synopsis is
provided in this Committee Report.
Several
international and domestic experts directly or
indirectly provided input that is shown in this report.
An independent “Blue Ribbon Committee” selected by the
Pipeline Division has reviewed the contents of this
report to ensure an acceptable consensus of industry
professionals working in the pipeline rehabilitation
(renewal) area, i.e., research, design, and
construction, is presented.
Download Final Report (PDF Format)
Any Feedback?
Click here to send comments, reviews and suggestions
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ASCE Manual of Practice on
Pipeline Design for Installation by Horizontal;
Directional Drilling (HDD)

Pipeline Design for Installation by Horizontal
Directional Drilling addresses the design of major
pipeline or duct segments to be installed by horizontal
directional drilling (HDD). This Manual of Practice,
which covers topics specifically related to HDD
installation, was prepared by a committee of senior
engineers who are leaders in the development of HDD
techniques and practices. HDD is a trenchless excavation
method that is accomplished in three phases and uses a
specialized horizontal drilling rig with ancillary tools
and equipment. This Manual is meant to be a guide for
design engineers with previous experience and knowledge
of the HDD installation process and pipeline design
methods. Topics Include:• Predesign Surveys • Drilled
Path Design • Pipe Design • Construction Impact •
As-Built Documentation.
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Underground
Infrastructure Affect Human Health

E XECUTIVE
SUMMARY
In
1992, 17 states reported 34 major water borne disease
outbreaks affecting 17,000 people. Environmental
Protection Agency (EPA) has reported that more than one
million Americans become ill each year from
sanitary-sewer overflows (SSO’s). A 1999 study by the
American Society of Civil Engineers (ASCE) indicates
that the nation’s 500,000 miles of sewer lines average
33 years old. However, many cities are maintaining and
operating a wastewater collection system with sections
that are nearly 100 years old. Michigan is no exception
with many cities which fall in this category. EPA
estimates that there are at least 40,000 sanitary sewer
overflows (SSO’s) per year, excluding basement backups.
A 1984 Urban Institute study of urban infrastructure
indicated that sewer backup rates tended to be highest
in economically distressed municipalities, and are
generally higher in communities with the oldest sewer
systems. Sewer breaks are particularly associated with
large, growing cities. According to the American Water
Works Association (AWWA), by 2020 the average utility
will spend three times as much on infrastructure
replacement as it does today. Many of the underground
utilities are outdated and rundown. The deterioration of
utilities manifests itself in increased operating and
maintenance costs, water losses, sewer overflows,
frequent service disruptions and a reduced quality of
water supply.
The level of service to customers is negatively impacted
by a reduction in the hydraulic capacity of a system due
to root ingress, accumulation of obstructions discharged
to the system (such as grease, rags, paper towels), and
structural failures (such as line breaks and collapses).
The poor performance of many sanitary sewer systems and
resulting potential health and environmental risks
highlight the need to increase regulatory oversight of
management, operation, and maintenance of these systems.
Improved system performance should:
-
Reduce health and environmental risks by reducing SSO
occurrences and improving treatment facility
performance, and
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Provide added protection to the state’s collection
system infrastructure by enhancing and maintaining
system capacity, reducing equipment and operational
failures and extending life of system components.
By
studying the nature of the problem in Michigan and
reviewing all available resources, this paper highlights
problems in Michigan, describes current Michigan policy,
summarizes relevant research that evaluates or informs
the problem and possible policy solutions, describes
what other states are doing in the area, and outlines
possible policy options for Michigan.
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