INNOVATION May-June 2018

Project Highlights •

CURVED CABLE-STAYED BRIDGE BUILT IN STAGES The Canal Lachine Bridge in Montreal, QC, is one of the signature structures in the $1.5 billion Turcot Project. The 305-metre-long, 50-metre- wide curved, cable-stayed bridge was designed to be built in stages to accommodate the construction schedule and maintain traffic during construction. The 88-metre main span over the canal utilizes an innovative pylon and single-plane fan arrangement of stays. Parsons’ design builds one carriageway for traffic without cable supports before a second carriageway is erected. The halves are tied together at the lower cable anchorages, forming a unique composite steel grillage system. Owner: Ministère des Transports, de la Mobilité durable et de l’Électrification des transports. Dr. Matthias Schueller, P.Eng., Yulin Gao, P.Eng., Ryan Taylor, P.Eng., Dr. Muntasir Billah, P.Eng., Kevwe Edewor, Jeff Baker, EIT, Dr. Rafiqul Haque, EIT, Mohammad Saifuzzaman, P.Eng., Rick Berg, P.Eng. ENGINEERING A NEW DRAWWORKS Pacific Rim Engineered Products designed and supplied a new drawworks (a hoist that raises and lowers the travelling block and drill pipe on an oil drilling rig) to meet numerous customer, drilling contractor, regulatory, and American Petroleum Institute requirements. The project scope comprised development of the drawworks and a motor-mounted, two-speed plus neutral gear planetary transmission. The timeline was an aggressive 30 weeks from kickoff to delivery. The drawworks architecture featured new design elements: a common shaft between the cable drum, gearbox, and pneumatic brake; overhung motor pedestals to minimize platform footprint; motor-mounted transmissions; and an onboard PLC. The drawworks incorporates 1,600-horsepower motors, can lift 1 million pounds, and reels DRILLED PILE FOUNDATION This design/build project used an innovative drilled pile foundation to provide a cost-effective solution for supporting the marine structures at Viterra’s Pacific Terminal in Vancouver. These included berthing and mooring dolphins designed on steel pipe piles with cast-in-place concrete caps. The shiploader rail was supported on a cast-in-place pile cap. Owner: Viterra Inc. (Peter Idema, P.Eng.). Design/build contractor: Vancouver Pile Driving Ltd. (G.W. Carlson, P.Eng.; Jorgen Jensen, P.Eng.: Villholth Jensen & Associates) 1,493 feet of steel cable at up to 880 feet per minute. Jonathan Deagle, P.Eng., Peter Cave, P.Eng., Kelvin Chan, EIT

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