INNOVATION July-August 2012

No1 Road andMoncton Street Intersection The No 1 Road and Moncton Street intersection is a gateway to Steveston Village. The four-way- stop-controlled intersection had significant vehicle, pedestrian and cyclist volume, resulting in right-of-way confusion for all users. The City of Richmond undertook the project to improve the safety and efficiency of the intersection, with a focus on making pedestrians the priority. The signal operations include a pedestrian only “scramble” phase, allowing pedestrians to cross in any direction, including diagonally. This places a higher priority on pedestrian movements and further promotes walking as the primary mode for movement within the village core. Functional design, traffic engineering, survey: Binnie. Electrical design: DMD & Associates. Construction contractor: Imperial Paving. Client: City of Richmond.

SAGMill Multivariable Advanced Process Control System Taseko’s Gibraltar Mines has completed the installation and commissioning of a multivariable advanced process control system onto the semi-autogenous grinding (SAG) mill in their mining operations in McLeese Lake. Designed by engineers at NORPAC Controls, the control system maintains a stable load on the SAG Mill’s twin 6,000 kW motors while maximizing the SAG mill’s ore production. An innovative online measurement of ore size distribution is used as a key process input into the advanced process control (APC) system. Using a specialized camera mounted on the ore feed conveyor, the PC-based measurement system uses proprietary image analysis software to determine the particle size distribution of the feed ore. Using the measurement, the APC system automatically adjusts feed conveyor speed in response to changes in ore size distribution, thereby improving the stability of the SAG Mill. Illecillewaet River Pedestrian Bridge The Illecillewaet River Pedestrian Bridge is a 65 m long steel truss bridge constructed by the City of Revelstoke to extend their recreational and commuter trails. It was constructed along the historic CP Rail Line, connecting Revelstoke with paddlewheelers plying the Arrow Lakes, and incorporates the approach embankment of the original CP Rail Bridge. It was designed by Watson Engineering of Kamloops as a steel truss with a timber deck in recognition of this railway heritage. This design minimized the weight of steel—an important consideration for erection of the bridge superstructure—while providing capacity to accommodate the large snow loads of the region and also maintain navigational clearances. The steel structure was prefabricated, assembled on site

and lifted into place under winter conditions. Pedestrian Bridge Design: Watson Engineering. General contractor: VVI. Steel fabricator: Donald Machine Works.

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