INNOVATION July-August 2013

. 2013 PROJECT HIGHLIGHTS

2012

Mark Creek Flume Flood Management and Stream Rehabilitation Aqua-Tex Scientific Consulting, acting as project managers for the City of Kimberley, BC, retained LaCas Consultants and Exp Ser- vices for the joint design and construction review of a replacement channel for the Mark Creek Flume Flood Management and Stream Rehabilitation Project. The purpose of the project was to combine engineering with biology in order to replace 180 lineal

metres of failing concrete flume (constructed in the 1950s) with an enhanced flood channel. Hydrological and hydraulic mod- eling was carried out to determine the water surface profiles within the flood channel including weirs, a low flow channel and ponds. A second phase extending 200 m upstream has also been designed and is awaiting construction approval. Hydrotechnical engineer: Brian LaCas, P.Eng.( LaCas Consultants). Geotechnical engineer: Evan Sykes, P.Eng. (Exp Services). Project manager and biologist: Cori Barraclough, R.P.Bio (Aqua-Tex).

Maple Pump Station The Maple Pump Station provides drainage service for the low lying lands in the Crescent Beach area in the City of Surrey. The station forebay pumps from the Dunsmuir Slough into Mud Bay at the mouth of the Nicomekl River on Boundary Bay. The station has dual submersible fish friendly drainage pumps, a discharge main and two flood boxes. The drainage pumps use screw type centrifugal impellers with a large free passage which enable fish to pass safely through the pumps without the dam- age or distress associated with conventional pumps. City of Surrey (Carrie Baron, P.Eng; Laura Hardiman, P.Eng. Doug Mossey P.Eng.). Prime Consultant: Omni Engineering (Ken Westerveld, P.Eng; Tony Seddon, P.Eng). Geotechnical Consultant: Horizon Engineering (Karen Savage, P.Eng., FEC). Environmental Consultant: Envirowest Consultants (Rolf Sickmuller R.P. Bio). Architectural Design: SHA (Steven Hart, Architect). Contractor: Westport Construction Group (Mark Webber, P.Eng.)

Construction Catwalks, San Francisco-Oakland Bay Bridge Somerset Engineering designed the temporary catwalks for the main suspension cable construction on the San Francisco- Oakland Bay East Span Signature Self-Anchored Suspension Bridge. Somerset provided the calculations for the sag of the main cables in the unloaded condition to set the precise geom- etry for the catwalk. The catwalks provided the template for constructing the main cables, and served as worker access for spinning the main cables and installing the cable clamps and spiral wire wrapping.

Client: American Bridge-Fluor JV. Owner: CalTrans. Somerset Engineers: Ray Florendo, P.Eng.; Phil Sullivan, P.Eng.; Shawn Pauliszyn, P.Eng.; and Peter Saunderson, P.Eng.

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