News – Page 110 – GeoPrac.net

Weekend CUP for May 8, 2012

May 9, 2012 rockman Comments Off

Caldecott Tunnel 4th Bore Pipe Canopy – Source: NationalDriller April 2012 Video: China opens record-breaking bridge over canyon – Source: Telegraph via ASCE SmartBrief Piletec aids precision piling near London’s Tower Bridge – Source: New […]

Standards and Codes

ASTM Updates for April 2012

May 9, 2012 rockman Comments Off

American Society of Testing Materials Logo - ASTM Here is a collection of new, revised and updated ASTM standards from April 2012 that may be of interest to geoprofessionals. See the list after the break…

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Giant sinkhole threatens to swallow house, forces family (and its pets) to flee

May 8, 2012 rockman Comments Off

A backyard-sized sinkhole opened up recently behind a Windermere, Florida home, causing the home to be deemed unsafe. The residents said one of their kids was enjoying a hammock in the area just the night […]

Rockfall: Characterization and Control

May 8, 2012 rockman Comments Off

This fall, TRB will release Rockfall: Characterization and Control, which will address rockfall hazard identification and evaluation, investigation process, mitigation options, and maintenance and management programs. The 400 page publication will include a DVD with […]

DipAnalyst – Free software package for kinematic analysis of rock slope stability

May 4, 2012 rockman Comments Off

Dr. Yonathan Admassu from Kent State University Ashtabula has released a free rock slope stability software package for kinematic analysis of planar, wedge and toppling modes of failure. DipAnalyst is an application software developed for […]

Ship locks at the Three Gorges Dam in China

Images of the Three Gorges Dam ship lock wall

May 4, 2012 rockman Comments Off

Dr. Dave Petley (The Landslide Blog) was recently in China meeting with members of the Three Gorges Dam University. They took him on a tour of several sites, including the impressive ship locks with an […]

Conceptual drawing for an underground cavern that could be dug under a park in Hong Kong.

Out of Space, Hong Kong Considers Expanding Underground

May 2, 2012 rockman Comments Off

The Hong Kong Geotechnical Engineering Office has long been a pioneer in the industry thanks in part to the limited space available on the island and the presence of many geological hazards such as landslides […]

NM Air Force Base criticized for efforts to map groundwater contamination plume

May 2, 2012 rockman Comments Off

New Mexico’s Department of Environmental Quality is critical of Kirtland Air Force Baseâ€™s efforts to determine the extent of jet fuel groundwater contamination according to a letter issued in April. The letter says the base […]

A rendering of the Transbay Transit Center with a 5.4 acre park on its roof.

Nicholson and SolData Working on Six of the Ten Largest Tunneling Projects in North America

May 1, 2012 rockman Comments Off

GeoPrac Sponsor Nicholson Construction was recently awarded the contract for geotechnical construcion on the San Francisco Central Subway Project along with join venture partner Condon Johnson. Nicholson’s scope will include diaphragm walls at the tunnel […]

Malcolm drilling crews setting up to drill secant pile shafts for TBM launch pit

Digging deep to drill Highway 99 tunnel

April 29, 2012 rockman Comments Off

Construction has started on the tunnel boring machine launch pit for the WSDOT SR 99 Tunnel Project (Viaduct Replacement). The 420 foot long pit is being constructed using secant pile retaining walls, with 2 rows […]