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View Resource Principal Strain Calculator

Given the strain components ex, ey, and exy, this calculator computes the principal strains e1 and e2, the principal angle qp, the maximum shear strain exy max and its angle qs. It also illustrates an approximate Mohr's cirlce for the given strain state.

View Resource Building Big

Building Big is a very informative site about the engineering principles required to build large structures, including bridges, domes, skyscrapers, dams, and tunnels. The interactive labs presented on the site discuss the various factors (e.g. forces, materials, loads, shapes) that need to be considered when designing large buildings. Fun challenges test these concepts for each of the five...

View Resource Design/Construction methods - Tunelling in Swelling rocks

Authors, Ch Amstad, Georgios Anagnostou and Kalman Kovari present a paper concerning laboratory tests and the monitoring of swelling rock as well as relevant case histories in tunnel construction. The site addresses many key issues in the field of rock mechanics.

View Resource Science 360

With a mix of interactive features, social media, and other bells and whistles, the Science 360 Knowledge Network "immerses visitors in the latest wonders of science, engineering, technology and math." The Network website is maintained by the National Science Foundation, and it draws on work by the Foundation and other institutions around the world. On the homepage, visitors are presented with a...

View Resource Educator's Corner: Engineering and the Guitar, Part I

This series of five introductory modules comes from Agilent Technologies' massive Educator's Corner Web site. It is mainly intended to teach high school students about some of the most fundamental principles of engineering, using a guitar to demonstrate concepts like frequency and tensile strength. At the same time, the material stresses the importance of critical thinking and taking an...

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