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Failures

Bridge that Collapsed Six Hours After Opening was Built Without Geotech Investigation

September 24, 2018 rockman 0

A bridge over the Swan River in a rural area of eastern Saskatchewan collapsed just six hours after opening, and reportedly there was no geotechnical investigation done for the piers in the river. The Dyck Memorial […]

Landslide Caused Pipeline Explosion on Leach Xpress Line

August 15, 2018 rockman Comments Off

A preliminary investigation report notes that “land subsidence” was the cause of a June 7th pipeline explosion near Moundsville, West Virginia, in other words, a landslide. An 83-foot section of the 36-inch diameter pipeline was […]

Tailings Dam Failure – Cadia Mine in NSW Australia

March 20, 2018 rockman Comments Off

On March 9, 2018 a “limited breach” of the tailings dam at the North Tailings Facility of the Cadia Mine tailings impoundment occurred in New South Wales, Australia. The area of the failure is approximately […]

Photo from GHD Report taken before the landslide

NZ Landslide – Agency Rejected Recommended Monitoring

March 7, 2018 rockman Comments Off

An article by the NZ Herald reports that recommendations for slope monitoring and early warning made by a geotechnical consulting firm in a report 2 years before the initial failure were not adopted by Auckland Transport. The […]

Excavation shoring retaining wall failure in Rome swallows 6 cars

Shoring Wall Fails in Rome, Swallows 6 Cars

February 20, 2018 rockman Comments Off

A shoring retaining wall at a Rome construction site failed at around 5:30 pm local time on February 14, 2018, and swallowed 6 parked cars from the adjacent street and required evacuation of some 20 […]

Millennium Tower in San Francisco - Image Vanguard Properties

New Guidelines for High-rise Foundations in San Francisco

January 9, 2018 rockman Comments Off

The 645-foot tall Millennium Tower in San Francisco settled an incredible 16 inches, and tilted at least 2 inches to the northwest. Recently the City and County Department of Building Inspection (DBI) issued interim guidelines […]

Armchair Geotech – Possible Hydro-Collapse at School Site?

September 25, 2017 rockman Comments Off

Raghu on the Geotechnical Engineers Linkedin Group has a problem. A new school site (location not disclosed) was built with cut and fill methods at a location where the winter ground water table is only […]

A 20 foot hole in the soil above a tunnel at the Hanford Nuclear Site

Tunnel collapses at Hanford nuclear waste site

May 12, 2017 rockman Comments Off

A 20 foot section of a tunnel collapsed at the PUREX facility at the Department of Energy’s Hanford Nuclear Site in Washington State. The PUREX facility was used to extract plutonium for weapons from spent […]

February 12, 2017 image of water flowing over emergency spillway at Oroville Dam in California

California Narrowly Averts Disaster at Oroville Dam

February 28, 2017 rockman Comments Off

Earlier in February severe rain caused the Oroville Dam in Sacramento to reach capacity. The dam is an earth fill dam approximately 770 feet high, making it one of the tallest dams of this type […]

Tunnel Collapse Caught on Video

December 20, 2016 rockman Comments Off

According to the site Geotechpedia, this tunnel failure occurred on November 29, 2016 around 9am (local time?). The tunnel is located in Yusufeli district of Erzurum in northeastern Turkey. It is somehow related to the […]