It’s been 50 years since the Magnitude 9.2 Great Alaskan Earthquake so dramatically altered people’s perceptions of the power of earthquakes. Check out this short video from the USGS: [Source: YouTube via AEG Insider. Image: […]
The WSDOT announced recently that the Seattle Tunnel Partners Joint Venture has requested a total of $188 million in change orders so far, and that the Department has denied $157 million of those, with $31 […]
I first heard about Geotech Tools through a TRB Strategic Highway Research Program (SHRP 2) publication titled Geotechnical Solutions for Soil Improvement, Rapid Embankment Construction, and Stabilization of the Pavement Working Platform. The final version of the report was released in February of this year. The report is one of the project deliverables for the SHRP 2 Project R02.
The primary deliverable of the project and the subject of this review is Geotechtools.org, a web-based tool for geotechnical engineers, structural engineers and pavement engineers. This website is a “toolkit of geotechnical information to address all phases of decision making from planning to design to construction.” What does that mean exactly? Great question. In this article I will give you an overview of the site and its resources and how it might help you on your next project.
The American Society for Testing and Materials, or ASTM, No. 57 stone is often used as sub base fill material below road surfaces and buildings. It is a fragmented stone with angular edges and is regularly utilized as a drainage layer when used with geotextile fabric. Although the material is touted by many as "self-compacting," excess voids left from zero compactive effort in locations with little confinement may not eliminate the possibility of future settlement. What happens when the environment above the No. 57 stone causes it to settle?
[Editor] Read on for the answer to this interesting question in the case of settlement of a structure at the University of North Carolina at Chapel Hill. The contributed article by Katherine Witt describes how URETEK Mid-Atlantic used their high-density polyurethane resin to stabilize the No. 57 stone beneath a settled foundation as well as lift the surrounding slab back into place. [/Editor]
A dramatic retaining wall failure and subsequent landslide last week damaged several cars and shut down a rail line in Baltimore, Maryland. The final failure was caught on video by a bystander. The landslide forced […]
Former Hayward Baker Vice President Joseph Welsh received the ASCE Opal Award for his ‘lifetime accomplishments of noteworthy advancements in construction, and the many contributions he provided the civil engineering industry over the past 50 […]
The Geotechnical Data Hub group on Linkedin recently turned 4 years old. Founded by Keynetix, this group is home to over 3,000 members with discussion topics covering all range of geotechnical data management. [Source: Read […]
GeoPrac sponsor Keynetix has released a stand alone data entry module for their HoleBASE SI geotechnical software program. The module is roughly 1/3 of the cost of the full HoleBASE SI license and has a […]
Rockscience has been busy soliciting feedback from their user base on news features for their settlement analysis software program, Settle3D. After receiving all of the feedback in the beta program, many of the user suggestions […]
Seattle Tunnel Partners released a new schedule this week for the repair of the damaged seals on the Bertha Tunnel Boring Machine. This revised schedule shows that the TBM won’t be digging again until March […]
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