Shoring retaining wall failure in Virginia prompts apartment building evacuation

ATLANTA – April 16, 2012 –Tensar International, the leader in geosynthetic soil reinforcement and stabilization, announced Kokosing has begun construction on the $3 million contract to build Mechanically Stabilized Earth (MSE) retaining walls for one […]

The New York MTA is in the midst of a “golden era” of tunneling for the New York subway.  Three separate mega-projects are currently underway totaling some $15 Billion:  The Second Avenue Subway, The East Side Access Project (which features the new Grand Central Terminal), and The Number 7 Subway Line Extension Project.  The short video below was published by the NY Post and included in an AP Article.  It is tantalizingly short, but gives a great perspective on what the underground construction project at Grand Central looks like and a sense of the scale…the amazing huge caverns being constructed. The article says that from underneath Grand Central Terminal alone, the construction crews have removed enough material to cover Central Park almost a foot deep!

[Source: KOMO News (Seattle) via ASCE SmartBrief. Image: AP Photo/Mary Altaffer via KOMOnews.com]

Click through for the video.

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Last month there were several updates to standards involving texting the flexural strength of concrete as well as updates to some masonry and dimension stone standards.  ASTM D6926 – Standard Practice for Preparation of Bituminous Specimens Using Marshall Apparatus has been updated, so if you are involved in asphalt pavement testing, make sure you go and find out what the changes are. There are also a whole slew of groundwater and site investigation standards that were reapproved.

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