Date: Thursday, November 28
Time: 11:30 AM – 1:30 PM
Location: Danish Canadian Club | Tivoli Room
727 11 Ave SW Calgary, AB T2R 0E3
Cost: Free for Members | $20** for Non-Members
Join the NASTT Calgary Chapter for a luncheon on Strategies for Investigating Subsurface Challenges and Evaluating Geotechnical Risk for Complex Crossings.
Through the review of three case studies, this presentation will describe multiple best practices to consider when customizing a geotechnical investigation program, evaluating trenchless methodology feasibility and communicating project risk for complex trenchless crossings. A horizontal directional drill case study examines a crossing with significant elevation difference that crossed protected land parcels a highway and a sensitive river containing thick gravel deposits below the river that extended to the exit at the valley uplands. This urban microtunneling case study handles swelling shales with bentonite and coal seams containing buried glacial valley gravel deposits and a curved microtunnel for a railway crossing evaluates feasibility of several trenchless technologies through a risk assessment of challenging subsurface conditions comprising till with frequent cobbles and boulders having high strength and abrasivity.
About the speakers:
Lawrence Onwude is a civil and geotechnical engineer with Stantec Construction Ltn. with over 14 years of experience as a project and construction trenchless engineer. Lawrence has overseen over 60 major trenchless crossings and more than 400 conventional trenchless crossings, specializing in horizontal directional drilling, direct steerable pipe thrusting, microtunneling, and conventional techniques such as auger bores, pipe rams, down-the-hole hammers, and horizontal directional bores based on geohazard assessments for projects across western Canada.
Carrie Murray is a geotechnical trenchless leader with Stantec Construction Ltn. with over 25 years’ experience specializing in feasibility and risk assessment, design and construction of complex crossings using horizontal directional drilling (HDD), direct steerable pipe thrusting (DSPT), microtunneling, pipe jacking, auger bore and pipe ramming methods having completed hundreds of trenchless crossing projects.
Date: Thursday, November 28
Time: 11:30 AM – 1:30 PM
Location: University Club of the University of Alberta 11435 Saskatchewan Dr, Edmonton, AB T6G 2G9
Cost: Free for Members | $20 for Non-Members**
Join us for an educational luncheon on the Mill Creek combined sewer trunk, which conveys wastewater and rainwater from south Edmonton to the Gold Bar Wastewater Treatment Plant, built in 1958.
The Mill Creek combined sewer trunk, which conveys wastewater and rainwater from south Edmonton to the Gold Bar Wastewater Treatment Plant, was built in 1958. The service area for this trunk is about 8,200 Ha plus the Nisku & Leduc areas. According to the Multi-Sensor Inspection (MSI) in 2018 and the concept study, the physical condition of the trunk is poor and very poor, especially the section found in Mill Creek Ravine. This trunk was determined to be a high priority rehabilitation project. The main scope includes 890m of 2100mm diameter new tunnel with two shafts, 200m of local sewer reconnection, and abandonment of 860m of existing trunk.
The first phase of the project construction was a micro tunnel which began in March 2023 and was successfully completed in June 2024. This included the construction of a secant pile working shaft next to the Mill Creek School playground, a liner plate retrieval shaft within Tubby Bateman Park, and an HDPE lined 2100mm inside diameter (ID) reinforced concrete jacking pipe installed by micro tunnel boring machine (MTBM).
Presenter: Gary Fei, P.Eng. M. Eng. Project Manager from EPCOR Water Services
Gary has been working with City of Edmonton and EPCOR for more than 17 years. He has involved in the design, construction and project management for many projects, including the tunnel installations, trunk rehab, sewer rehab and upgrading, and other drainage related projects.
Date: Thursday, October 24
Time: 11:30 AM – 1:30 PM
Location: University Club of the University of Alberta 11435 Saskatchewan Dr, Edmonton, AB T6G 2G9
Cost: Free for Members | $20 for Non-Members**
Join us for an informative presentation on Trenchless crossings. An efficient and effective means of crossing unstable terrain, watercourses, environmentally sensitive areas and areas of congestion/urban development.While trenchless technologies have improved dramatically over the decades, they can still be adversely affected by ground conditions either not being properly investigated or being inadequately understood. New trenchless methods such as Drill-Intercept (HDD) and Direct Pipe have also allowed for crossings to be considered with ground conditions that would have previously been deemed not feasible.
This talk will highlight Mr. Saunder’s experiences with some of the challenges posed by geotechnical conditions with various types of trenchless crossing methods. Mr. Saunders will also touch on specific problems associated with artesian pressures, cobbles/boulders, abrasive soil/bedrock, coal mines, gravel pits, excessive settlement/ground loss, mixed face conditions, and high groundwater.
Bob Saunders is a Senior Associate and Senior Geotechnical engineer with Thurber Engineering Ltd. in their Calgary office. He has a B.Sc. in Civil Engineering from the University of Calgary (1981) and a Master of Engineering in Geotechnical Engineering from the University of Alberta (1989). Mr. Saunders has over 40 years of experience with civil engineering projects in Western and Northern Canada, mostly related to pipelines and geohazards. His early experience was with northern pipelines including the Foothills Pipelines gas pipeline project in the Yukon and the Norman Wells oil pipeline project in the Mackenzie Valley.
He has specialized in trenchless construction of pipelines for over 30 years with his first HDD being completed in 1990. He has assessed hundreds of trenchless crossings of landslides, watercourses and civil infrastructure and has experienced many of the challenges one might expect with a long career.
**If your country is not set to Canada in the top right corner, you will not be able to register.
Date: Thursday, September 26
Time: 11:30 AM – 1:30 PM
Location: Danish Canadian Club | Tivoli Room
727 11 Ave SW Calgary, AB T2R 0E3
Cost: Free for Members | $20** for Non-Members
Join us for an informative presentation on Guided Auger Boring in all ground conditions, led by Dr. Heinz Plum, a distinguished consultant in civil engineering since 1997 and Managing Director of Bohrtec Gesellschaft für Bohrtechnologie mbH since 2013.
Guided Auger Boring is a trenchless technology renowned for its precision, capable of installing pipes with an accuracy of ±25 mm. This method is categorized into two distinct techniques tailored to varying ground conditions:
Pilot Pipe Method: Ideal for displaceable soils with SPT values ≤ 35, no cobbles larger than 80 mm, and drive lengths up to 100 m. A groundbreaking solution, the Bohrtec DoPi-Hole-Opener, now extends its application to regions with high groundwater tables and challenging running soils, enabling the installation of plastic sewer lines (OD 150 to OD 400) with all the efficiency and simplicity of traditional auger boring systems.
Front Steer Method: Designed for harder ground and rock, this system excels in non-displaceable soils, soft rock (up to 30 MPa), and even hard rock (up to 250 MPa) when equipped with a DTH hammer. With sizes ranging from 324 mm OD to 1,014 mm OD, the Front Steer system offers immediate ground excavation, efficient soil removal, and precise directional control.
Don’t miss this opportunity to explore cutting-edge technologies and solutions in trenchless pipe installation.
**If your country is not set to Canada in the top right corner, you will not be able to register.
Join us for an educational luncheon on Glass Reinforced Polymer GRP liner construction, design, hydraulic capacity, QA/QC, jointing systems, grouting, and other topics relating to the installation of GRP liners.
Andy Sherwin became involved in the sewer and infrastructure business in 1992 and has extensive field, sales and Management experience in pipe maintenance, rehabilitation and industrial cleaning. In 1992, while employed by Thames Water Services Group in London, England, Andy gained invaluable knowledge of cured-in-place pipe (CIPP) Lining, Spray Applied Lining and GRP Slip-Lining.
After relocating to North America, in the late 90’s he worked with some of the largest Trenchless Specialists in Canada and has been involved in several challenging Large Diameter, Non-circular lining projects.
During his time with Channeline International Fiberglass Manufacturing L.L.C., Andy constructed or acted as Technical support for over 100,000ft of rehabilitation using GRP Lining and has been involved in many thousands of feet of CIPP Rehabilitation.
Join us for an educational luncheon to learn more about GRP Lining products from a leading expert.
Cost: Free for Members | $20 for Non-Members**
**Non-Members will need to pay at the door using cash or check.
