
Join us for an educational luncheon on a practical, risk-informed workflow to estimate pull forces for HDD installations of bundled steel pipes.
This presentation demonstrates a practical, risk-informed workflow to estimate pull forces for HDD installations of bundled steel pipes. The bundle is represented as an equivalent single pipe (ESP) and analyzed with unit-consistent PRCI pullback mechanics along the as-designed profile; uncertainty in key drivers—static/kinetic soil friction, drilling-fluid shear stress and density, enlargement ratio, curvature tolerance, and low-side cuttings effects—is propagated via Monte Carlo with rank-correlated inputs, while geometry remains deterministic. On a set of representative Alberta crossings, the method delivers section-wise P50–P95 envelopes and a rig-entry exceedance curve (PRCI P50, P95), providing a transparent percentile-based margin to the available rig rating. Results are contrasted with a NEN-3650 computation to show how methodology affects central tendency and tail risk; a compact sensitivity analysis (tornado/Sobol) highlights the dominant levers (μ_k, τ_mud, enlargement), directly informing field controls for drilling fluid and reaming/cleaning strategy.
Presenter: Fredy A. Díaz-Durán, Ph.D.
Fredy A. Díaz-Durán, Ph.D., is a Postdoctoral Fellow in Civil & Environmental Engineering at the University of Alberta. He earned his Ph.D. in Civil Engineering (Geotechnics) from the University of Waterloo and has directed industry-partnered projects, led research initiatives, and taught and supervised student teams in dynamic soil characterization, slope and excavation stability, and sustainability/LCA for subsurface works. His current work advances computational geomechanics, geohazard assessment, and risk analysis for resilient underground and geotechnical infrastructure—integrating field and laboratory characterization with numerical modelling and statistical/probabilistic methods to enable risk-informed decision-making under uncertainty. He translates ground–structure interaction into clear performance ranges and design margins for a wide spectrum of systems and contexts, including linear corridors and utilities, trenchless works (e.g., HDD), tunnels, foundations, and geohazard-prone sites in municipal, energy, and transportation settings.

Join us for an educational luncheon on an introduction to the ASCE 38, the backbone of Utility Design for open-cut and trenchless.
Solving Design Utility Conflicts issues Proactively for Open Cut and Trenchless on Projects: This will be an introduction to the ASCE 38. It is the backbone of Utility Design for Open cut and trenchless and will guide how to collect and depict existing infrastructure as per ASCE 38 and the how to document the validated utilities information to a point that they can be exchanged and used with a baseline of the accuracy go forward to a common point that can set a risk mitigated future design projects from facts and not assumptions.
Presenter: Mohab
Mohab is a professional engineer with 8 years of multi discipline civil engineering experience. He has considerable experience in project management field coordination, construction and land surveying. Mohab has the discipline and knowledge to prioritize tasks and meet client deadlines and is currently employed as Edmonton Branch Manager with T2 Utility Engineers Inc. in the Subsurface Utility Engineering (SUE) department. He is responsible for overseeing Subsurface Utility Engineering investigations for the purposes of identifying the location of utilities and depicting all infrastructure during the design and planning phase of projects. He is responsible for proposal development, financial management, project management and engineering reviews for SUE services for Western Canada.

Join us for an educational luncheon on Artificial Intelligence and Machine Applications in Condition Assessment and Asset Management of Collection Systems.
Artificial Intelligence (AI) and machine learning (ML) are transforming water and wastewater utilities by enhancing efficiency, sustainability, and resilience. This presentation explores how AI technologies can improve condition assessment activities, enable proactive maintenance, and reduce costs. AI-driven commercially available applications will be presented and illustrated using case studies.
Presenter: Erez Allouche, Ph.D., P.Eng. | Trenchless Technology and Innovation Leader | Stantec
Dr. Erez Allouche has devoted much of the past three decades to research and practice in the field of underground infrastructure. His work focuses on the development of new condition assessment technologies and the design and analysis models for underground construction using trenchless methods. He specializes in the design of complex Horizontal Directional Drilling (HDD) and microtunneling crossings, and to date, has completed the design and/or construction oversight of more than 160 such crossings around the world. These installations have included crossing of major highways, railways and rivers. His design experience also covers crossings utilizing other trenchless methods such as Direct Pipe™, pipe jacking, auger boring, pipe ramming, down-the-hole hammer and horizontal direct bores. Prior to joining Stantec, Erez was a Professor of Civil Engineering at Louisiana Tech University and the Director of the Trenchless Technology Center. He is the inventor/co-inventor of 17 patents in the area of trenchless technologies, and the author/co-author of more than 260 publications in the areas of buried infrastructure management and pipeline installation using trenchless techniques. Erez is a former member of NASTT’s Board of Directors.
IMPORTANT INFORMATION – If you are an active member of NASTT, you will be asked to pay the deferred $20 attendance fee at the door of this event using cash or check. If you are NOT an active member of NASTT, you will be asked to pay the deferred $40 attendance fee at the door of this event using cash or check. Checkout will show a $0 balance, but this is simply because the payment is deferred.

To kick-off the 2025-26 season of NASTT events in Edmonton, the Edmonton Section is hosting a free BBQ over lunch at the Crossing Company yard in Nisku. The yard will have varied microtunneling, direct steerable pipe thrusting (DSPT)/Direct PipeTM, auger boring, and horizontal directional drilling (HDD) equipment and tooling on site for attendees to see up close with the Crossing Company staff available for any questions attendees may have.
There will be opportunity to tour the yard, or to just enjoy the free BBQ and spending some informal time with other people in the trenchless industry!
Must bring a hard hat, reflective vest, and CSA Grade 1 or 2 protective footwear.
Free parking will be available.

Western Region of NASTT is pleased to present our upcoming Annual Regional Conference taking place on October 14 – 16 in Scottsdale, AZ. This event brings together professionals from across the trenchless technology industry for an engaging and educational experience.
October 14 | BATL Axe Social
Come test your mettle and network with fellow conference attendees before the main conference at the WESTT sponsored Axe Throwing Tournament on Thursday, October 14, 2025, at BATL Grounds, 7919 E Thomas Rd #102, Scottsdale, AZ 85257 from 6 pm to 8 pm. Attendance for this event requires pre-registration. Registration includes participation in the tournament, one drink ticket, and appetizers.
October 15 |
One-Day Seminar
The one-day conference includes a wide variety of technical presentations related to trenchless construction including wastewater collection systems, water transport systems, new technologies, policies, and regulations. The conference will feature an exhibition hall where companies can showcase their services and attendees can view the latest innovations in the industry. CEU hours are available to attendees for the conference/course.
View the Agenda Here.
October 16 |
Trenchless 101 Course
Attendees have the opportunity to register for Intro to New Installation and Intro to Rehabilitation Good Practice Courses for an additional fee. These introductory courses are ideally suited for both newcomers to the industry and anyone who is interested in seeking a refresher course on trenchless technology methods. The New Installation course covers new construction techniques such as microtunneling, HDD, pipe jacking, auger boring and pipe ramming. The rehabilitation session provides an overview of the methods available to public works and sewer agencies to rehabilitate water, sewer, and gas systems without the need for excavation. Registration for Day 2 includes registration for both courses. CEU hours are available to attendees for the conference/course.
View the Agenda Here.
Who Should Attend
This events welcome all NASTT members, non-members, students, and all trenchless technology enthusiasts interested in gaining insight, fostering connections, and advancing their work through knowledge-sharing and collaboration.
Don’t miss this opportunity to learn from the best, expand your network, and stay informed on the evolving trenchless landscape!
Registration and Sponsorships are COMING SOON!