Redi-Rock has released a free software product for the analysis of gravity retaining walls.
The only portions of the World Trade Center towers that survived the attack on 9/11 were the basement slurry walls, part of the original shoring and foundation system. The National September 11 Memorial and Museum at the World Trade Center that is currently under construction will preserve a portion of that wall making it the largest exhibit the museum will offer. The wall section displayed will be 62-ft by 64-ft.
The existing slurry walls are being incorporated into the foundation system of the new facility but not without some improvements. The are adding some kind of foundations improvements to stabilize the toe of the walls, the New York Times article calls them caissons, but I don’t know if its a tangent or secant wall or something else. They are also lining them with additional concrete and reinforcement in front of the walls along with additional tiebacks to stabilize them. In the portion of the wall that will be displayed, a counterfort wall will be constructed behind it and new tiebacks will be installed on the front. Work for the counterfort wall will be done by hand in order to avoid the existing tieback cables. All of the existing tiebacks will be left intact. Check out the NY Times article for a great graphic showing the system. (Illustration by New York Times)
ADAMA Software has released update 10.1 for their Mechanically Stabilized Earth retaining wall design software, MSEW 3.0 as of September 29, 2009. Click through for the download link and a few of the changes.
I expect that when the new FHWA MSE Wall Manual hits the street in a few months time that we will see some significant updates with the MSEW software package.
Related Images, Calculations, Automated Displays Programmable by Users with New Interface
Windsor, CA – September 11, 2008 – gINT Software, Inc.
A new upgrade to gINT geotechnical and geoenvironmental software lets users publish boreholes to Google Earth, Google’s satellite imagery–based mapping product. The version 8.2 upgrade enables users to specify an icon, color, label, and description to associate with the borehole via an easy-to-use Google Earth Setup dialog in gINT. When the borehole icon on the Google Earth map is clicked by a viewer, a user-designed description will appear in a popup window. The window can also contain links to any type of file, including images and PDFs displaying the boring log, enabling users to visually provide a substantial amount of information for each borehole.
[Editor] Click through for the rest of the press release and more screen shots. All screen shots courtesy of gINT Software, Inc. [/Editor]