WSDOT reported that Bertha has slowly began moving again. It must tunnel through 20 feet of unreinforced concrete with its broken seal to break through into the rescue shaft. Once that happens, the repairs to […]
The Alaskan Way Viaduct tunneling project was in the news late last year when settlement of the Viaduct was reported during the dewatering efforts for the Bertha TBM rescue shaft. A recent post by WSDOT […]
The geotechnical software company Deep Excavation has a nice entry on their blog about the cofferdams for the Tapan Zee Bridge in New York. Geotechnical firm Siefert Associates used the DeepExcav software to design the […]
The excavation has been completed for the access shaft or rescue shaft that was needed to be able to remove the damaged cutterhead of the Bertha TBM on the Alaskan Way Viaduct Replacement project in […]
Nicholson Construction Company, a GeoPrac sponsor, has been working on 68,000 square feet of shoring and permanent retaining walls for an indoor practice football field and running track, as well as two levels of underground […]
Areas surrounding the access pit being excavated to rescue the stalled Bertha TBM have experienced settlement as much as 1 to almost 1.5 inches according to a draft figure released by WSDOT on December 11, […]
The latest issue of Pile Buck Magazine has a cover story on the Panama Canal Construction. Talk about a mega project! There are actually two articles, the first includes a very nice summary of the […]
Hayward Baker will construct their Vibro Piers(TM) foundation system at the new stadium to house the Atlanta Falcons and a new MLS team. Their holes will be 2.5 feet in diameter and 27 feet deep […]
The giant straddle cranes that load and unload cargo from the container ships at the Port of Oakland apply a fairly concentrated load along their wheel path. Over time, the wheel path area has settled, […]
There hasn’t been much to report recently for the Alaskan Way Viaduct Tunnel Project in Seattle. As you probably know, Bertha has not advanced since about December of 2013 after drilling through an abandoned steel […]
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