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ELK FALLS PIPELINE BRIDGE
Location:Campbell River, BC, Canada Description:The Elk Falls Pipeline Bridge crosses the Campbell River just upstream of the BC Hydro Powerhouse, north east of the town of Campbell River. The bridge is an all-welded steel Veirendell truss made up of HSS sections. The bridge forms part of the BC Parks trail system and is used by 60,000 pedestrians a year. Strong pedestrian induced vibrations have been observed and reported in the past. These vibrations are largely caused by groups of teenagers that excite the bridge near its natural frequency. Total length: 49 m (160 ft.) Owner and Client:Centra Gas BC Inc. Scope of Work:Buckland & Taylor Ltd. inspected the structure and investigated the possibility of founding additional supports in the existing alignment. We investigated vibration mitigation alternatives such as additional supports with or without dampers. Buckland & Taylor Ltd. prepared design drawings and specifications for the most cost effective preferred solution, which was to install additional supports with additional bearings. The design was completed in 2001.
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