Central Link Light Rail – Beacon Hill Project

November 2004 at Seattle, Washington


Method Applied

Bottom Feed Stone Columns

Average Depth


Provide instant stability, accelerate drainage and prevent liquefaction for an up to 12 m (40 ft) high road embankment on soft to very soft silt and clay with some peat layers. Below an only 0.5 m dry crust, in some locations the soil is so soft that equipment as shown in the photo below would sink in without the presence of a geotextile reinforced work platform.