NHC Receives Awards for Engineering Excellence at ACEC-BC Annual Awards Gala

On Saturday, April 9, NHC was honored to receive two Awards for Engineering Excellence at the 2016 Association of Consulting Engineering Companies British Columbia (ACEC-BC) gala. The first was in the Energy & Industry Category for the McLymont Creek Hydropower Project Diverting Water for Hydropower in BC's Coastal Mountains, a joint submission with Gygax Engineering Associates (GEA). There were four nominations in this category. The second award was in the Soft Engineering Category for the River Training Works in Bangladesh Protecting the Padma Bridge project. There were nine nominations in this category.

The ACEC-BC recognizes engineering excellence annually in five categories: Buildings; Municipal & Civil Infrastructure; Transportation & Bridges; Energy & Industry; and Soft Engineering. Projects are judged on their technical excellence and innovation, ability to meet project objectives, including budgets and schedule, and their environmental, economic, social sustainability, and aesthetic aspects.

The McLymont Creek Hydropower Project is a 66MW run-of-river hydroelectric facility located on McLymont Creek, a tributary on the north bank of the Iskut River, about 100 km north of Smithers, British Columbia. AltaGas led the team of over twenty contractors in designing the project to meet British Columbia's clean energy and environmental goals. The project diverts up to 30 cubic meters/second from McLymont Creek through a 60 m long headrace canal and intake forebay into a 2.8 km long tunnel leading to the powerhouse. NHC's role included the hydrotechnical aspects of detailed design and ongoing hydrometric monitoring and analyses. As part of the design process, NHC conducted a 1:16 scale physical hydraulic model of the intake facilities. The project is currently on-line and in the final stages of project commissioning. GEA/NHC submitted McLymont Creek for its innovative intake design, which met the project objectives of power diversion, debris control, and sediment and flood passage. Click here for project video.

The Padma Bridge is under construction across the Padma River in Bangladesh, the world's third largest river in terms of flow. Originating in the Nepal Himalaya, the river carries an enormous sediment load, and through erosion, its highly populated banks can shift a kilometer or more in one monsoon season. Extensive and massive river training works are required to stabilize and guide the more than 10 km wide channel through the 5 km wide channel at the bridge. The final design includes 14 km of erosion protection and is based on an extensive field data collection program, a series of detailed specialist river and geotechnical studies, development of alternative schemes, and a rigorous multi-criteria comparison that identified the preferred alternative. The design also relies on extensive and innovative use of sand-filled geotextile bags (geobags), leveraging Bangladesh's vast labor force and supply of sand. NHC worked closely with the project's environmental, economic, and social specialist to ensure that the design meets important cultural and sustainability requirements. The estimated construction cost is US $900MM. Click here for project video.