[null, {"document_url": "https://www.geoengineer.org/news-center/news/item/2113-hayward-baker-designs-installs-an-earthquake-drain-successfully", "unformatted_src": "/media/k2/items/cache/0176750c773a9dd29a31c85a92d3e83f_L.jpg", "src": "https://www.geoengineer.org/media/k2/items/cache/0176750c773a9dd29a31c85a92d3e83f_L.jpg", "formatted_filename": "c a dd a c a d e f L", "alt_text": "Hayward Baker designs &amp; installs an Earthquake Drain successfully!"}, null]

You are here: Home / News Center / Breaking News / News on Projects / Industry / Hayward Baker designs & installs an Earthquake Drain successfully!
Monday, 27 August 2018 11:55

Hayward Baker designs & installs an Earthquake Drain successfully! 

The City of Seattle experienced traffic congestion related to the Alaskan Way Viaduct, Spokane Street bridges, on-grade railroad tracks, and additional surface roads. A three-way highway ramp called East Marginal Way was constructed to alleviate the traffic congestion. Soil conditions consisted of deep deposits of liquefiable sands.

Because of the high seismicity and loose sand conditions, this site was susceptible to significant liquefaction hazards, including bearing capacity reduction and excessive settlement. Mitigation of the liquefaction-related hazards was required prior to ramp construction.

HBI designed and installed an earthquake (EQ) drain solution to mitigate the liquefiable soils to a depth of 80 ft beneath the 30,000 SF treatment area. Special care was taken to avoid installation related settlement as the drains were located directly adjacent to the existing railroad tracks. Following the EQ drain installation, HBI was responsible for the pore pressure relief stone reservoir placement, geotextile installation, and final site grading.

Click here to read more about the project.


Read 222 times Last modified on Monday, 27 August 2018 14:32


More in this category: « Real time warning system for landslides Siemens and Bentley Systems strengthen their strategic alliance and joint investment initiatives »







