Inspecting high-rise construction sites is a dangerous job, but somebody--or some robot--has to do it. Engineers at Virginia Tech built the HyDRAS-Ascent II to climb by encircling a beam and twisting its 90-degree joints in sequence. In December, the robot won the grand prize at the Capstone Design Fair in Seoul, South Korea, competing against experimental robots, electronic gizmos and other novel hardware.
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