The Vancouver House Project: Impressive Architecture with DYWIDAG Systems

The Vancouver House project is one of the most spectacular projects currently under construction near the False Creek in Vancouver, Canada.It is a 150m high tower building that will include restaurants, retail facilities and 375 apartments and that will be opened in 2019.

Thanks to its unusual design that has already won several awards, the high-rise building will become a new landmark. Vancouver House is being built on a triangular ground area of only 557.4m². The twisted tower transitions from a mostly triangular base to a rectangular top section. This way, the upper floors have a 1,208m² large floor space that is approximately twice as large as the foundation area.

The Vancouver House’s 7 levels of underground parking required a 24.4m (80ft) deep excavation that was stabilized by a shotcrete anchored wall for the full depth. To tie back the retaining wall, DSI Construction Canada produced and supplied 1,200 Type 3-0.6" and 4-0.6" DYWIDAG Strand Anchors in lengths of approximately 13.7m. Due to the changing ground conditions in the excavation area, 200 R51, 13.7m long DYWI® Drill Hollow Bar Anchors were also installed.

Since the area on the south side does not form part of the owner’s property, the use of anchors was not permitted so that the area of the excavation was stabilized by horizontal girders that were diagonally braced at the corners.

One of the biggest challenges on this project was the close proximity to the Granville Street Bridge approach spans. The foundation loads of this bridge are transferred to large spread footings that reach right to the edge of the Vancouver House excavation. While the excavation progressed, the bridge was monitored at many different locations for any sign of movement. Thanks to the efficient stabilization of the excavation, no movement was recorded during the entire excavation process.

Owner

Westbank Projects Corp., Canada

Contractor

Southwest Contracting Ltd., Canada

Architects

BIG, USA, DIALOG and James K.M. Cheng Architects Inc., both Canada

Consulting Engineers

GeoPacific Consultants Ltd., Canada


DSI Unit

DSI Canada Civil Ltd., Canada

DSI Scope

Production, supply

DYWIDAG Products

1,200 Type 3-0.6" and 4-0.6" DYWIDAG Strand Anchors, 200 R51 DYWI® Drill Hollow Bar Anchors

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