The construction at Sound Transit's Beacon Hill Station is progressing on schedule. The construction of slurry wall panels for Headhouses and Shafts has been started recently.
Meanwhile, exploratory drilling is under way to determine the extent of water bearing sand and silt layers. These will be improved by jet grouting from the surface and dewatering with deep wells.
Please follow the links below for additional information:
Beacon Hill Station - A Project Description
Benchmark for the Future:
The Largest SEM Soft Ground Tunnels in the United States for the Beacon Hill Station in Seattle
Jürgen Laubbichler, PE, Dr. G. Sauer Corporation
Thomas Schwind, Dr. G. Sauer Corporation
Gerhard Urschitz, PE, Dr. G. Sauer Corporation
SEM / NATM Design & Contracting Strategies
Joseph Gildner, PE, Sound Transit
Gerhard Urschitz, PE, Dr. G. Sauer Corporation