GGC has completed the design of numerous deep excavations within the Lower Mainland, and several in US and Aaisn. These excavations have ranged in depth from 4 m to 60m below grade level.

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Typical applications in the civil project include work related to underground parking lot,cut and cover tunnels; and in the mining applications for shafts, inclined tunnels and occasionally open pit slopes.

GGC engineers have extensive experiences in providing alternative and innovative ground engineering design to support unstable structures or newly constructed structures requiring temporary supports for the excavation in ground.

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GGC is capable of design, performance monitoring and testing for the following shoring systems:

• Ground Anchor or Rock Bolt

• Tie back and Deadman Anchor

• Soil Nail

• Sheet Pile Wall with or without supports

• King Pile Wall

• Soldier Pile and Secant walls

• Strut and Supporting System

• Shortcrete and Soil Mesh

• Reinforced Soil

 

GGC utilize the following analytical techniques in the shoring design, include :

• Limit equilibrium analysis.

• Soil- structure interaction analysis – modelling the components of the shoring system as springs. This analysis provides loads and deformations within the shoring system.

• Finite element modelling – used for permanent structures located in the seismic active areas, or temporary structures located to the areas where the soil shear strength is significantly strain dependent.

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GGC puts high emphasis on field inspection and testing during construction. This allows us to identify variations of ground conditions, so that we can  optimize or modify the layout of structural elements if deemed necessary.