Hybrid Shoring System For Seattle High-Rise Deep Excavation

Tower 12 Project temporary excavation in Downtown Seattle, credit: Terracon

Terracon posted a new blog post about a unique hybrid soil nail and anchored soldier pile wall excavation support system for the Tower 12 Building project in Downtown Seattle.  The project involves a 60-foot deep excavation for underground parking, but the west side of the excavation was adjacent to an existing 20-story building with three levels of below-grade parking.  The hybrid system involved tightly spaced soil nails in the upper portion of the excavation wall and steeply-inclined, high-capacity ground anchors (200 kip) to support the lower portion.  Check out more details on this interesting project from Terracon.

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