I came across this interesting product for structural/geotechnical monitoring of cracks in 3 dimensions. Most crack monitors are designed for monitoring in 2 dimensions, this one can measure movement out of the plane of monitoring. I like that the markings are laser-etched so the simple device should last for a long time. Price is $40/each from Quality Plus Engineering, LLC.
Geologic Hazards
Video: Helicopter Based Rock Scaling “Sledgehammer”
[Updated May 26, 2011] A new, cleaner, longer version of the video has surfaced on YouTube recently. You can see it embedded below. It includes some footage of attempts to "water bomb" the rock loose […]
Miscellaneous
[Fixed] Video: Keller Geotechnical installing Ground Anchors at Gainsboro
Nothing too exciting here, but geotechnical videos are kind of few and far between, so I like to share them. It looks like its some kind of anchored sheet pile wall.
Miscellaneous
Video: Plotting Strike & Dip Symbols in Google Earth using RockWorks
This video shows a very cool way of representing strike and dip measurements in Google Earth using a RockWorks tool.