ATOC 185 Lecture Notes - Lecture 14: Wind Shear, Vertical Draft, The Strongest
23 Jan 2018
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Document Summary
2nd largest dame at the time: upon looking at an image of it there"s immediate visibility of an issue, landslide had occurred there shortly before construction. Causes of the slide: the sedimentary rocks were oriented parallel to the slope, the rocks were fractured, thereby weakening them and allowing water to infiltrate, clay-rich shale was present, thus, the rocks were inherently weak. Before and after views: before, we see the old landslide scar and the one from the 3 years before, after, see the lake filled. Map of the slide event: in red shows the slide from the main event. A current view of the area: they abandoned the dame, and the lake, shows no vegetation, shows continued instability, rock fall and new landslide evidence visible. Planning: avoid building steep slopes, avoid building in hazardous areas, restrict or eliminate human activities in these zones, make wise use of hazard maps.
