On U.S. 34, in the Narrows of the Big Thompson Canyon, there are some solar-powered gizmos on posts on the railings, and one on a rock wall. What are these for? The gizmos are tiltmeters — high-tech ...
# Sensors are installed on the pillars of the pedestrian overpass at Central City in Banpo-dong, Seocho-gu. The sensors continuously detect vibration, tilt, and crack conditions every 10 minutes and ...
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