Poster by cuiliqing


									FCLU Public Seminar
Environmentally Sustainable Trenchless Solutions
For Underground Utility Projects
In Urban Environments
                             Dr. Samuel T. Ariaratnam
                             Del E. Webb School of Construction
                             Arizona State University, USA

                             The utilization of traditional open-cut methods for the installation of
                             underground utilities has been common practice in the construction
                             industry for many years. Today, engineers are being tasked with the
                             requirement of selecting a suitable construction method that not only
                             offers the most economical solution, but also minimizes impact to the
environment. Trenchless construction methods offer such solutions for installing new utilities and
rehabilitating existing infrastructure using “green” principles. The use of multiple construction
equipment during open-cut construction invariably results in considerably more emitted emissions
into the atmosphere compared to employing trenchless methods, which have minimal on-site
equipment requirements. Pollutants such as carbon dioxide (CO2), carbon monoxide (CO), nitrogen
oxide (NOX), hydrocarbons (HC), sulfur oxide (SOX), and particulate matter (TM) are identified by the
United States Environmental Protection Agency (US EPA) as being emitted from equipment engines.
This paper describes a methodology for quantifying the emission effects (i.e. carbon footprint) of a typical
underground utility project. A case study is used to demonstrate the reduction in emissions by adopting
trenchless technologies. Additionally, the development of an innovative “environmentally-friendly”
technology for the installation of critical grade sewers will be discussed. Reducing emissions into the
atmosphere is a vital step in developing sustainable solutions. These environmental considerations
are critical in sustaining our environment for the benefit of future generations.                              Date:
                                                                                                               16 November 2009
All Interested Are Welcome                                                                                     (Monday)
Please register online at                                                        Time:
For enquiries, please contact Ms Becky Chang at                                                                6:30PM to 7:30PM
Tel: 27665039                                                                                                  (Refreshments will be served at 6:00PM)
Fee: Free of Charge                                                                                            Venue:
.An attendance certificate will be issued to each registered participant.
.Applicants with confirmed registration who fail to turn up will be put on lower priority                      Chiang Chen Studio Theatre,
   in the registration for the next faculty distinguished lecture or seminar.                                  The Hong Kong Polytechnic University
About the Speaker
Dr. Ariaratnam is a Professor at the Del E. Webb School of Construction at Arizona State University.
He received his B.A.Sc. from the University of Waterloo (Canada) in 1989 and his M.S. and Ph.D.
from the University of Illinois at Urbana-Champaign in 1991 and 1994, respectively. Prior to joining
ASU, he spent five years as a faculty member in the Department of Civil and Environmental
Engineering at the University of Alberta. From 1995-96, he was a Visiting Assistant Professor at the
U.S. Air Force Academy in Colorado Springs, CO. His primary area of research interest lies in
Sustainable Underground Infrastructure Management and Rehabilitation. Research in this area has
focused on the development of new technologies in construction engineering and applications of
underground trenchless construction techniques, specifically Horizontal Directional Drilling and
Trenchless Pipe Replacement. He has published over 150 technical papers and reports, co-authored
five textbooks, and is a co-holder of three patents. Through his research and educational initiatives,
Dr. Ariaratnam has received recognition from the California Department of Transportation, City of Los
Angeles, North American Society for Trenchless Technology (NASTT), and the American Society of
Civil Engineers (ASCE), where he received the prestigious John O. Bickel Award. In 2003, he was
presented with the Young Civil Engineer Achievement Award from the University of Illinois at
Urbana-Champaign. Dr. Ariaratnam received an award of recognition from Halliburton Energy
Services for contributions to underground technology in 2004. In May 2005, he was made an
“honorary” member of the National Utility Contractors Association (NUCA) of Arizona. The Phoenix
Business Journal named him to the prestigious “Top Forty Under 40” list in 2006.

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