This pointcloud viewer is not optimised for mobile viewing. For the best user experience, it is recommended to view this digital appendix via desktop or laptop.
unclassified
talus
intact
fragmented discontinous rock
closely spaced discontinous rock
widely spaced discontinous rock
steep overhang
cantilevered overhang
This page concisely displays lidar data collected as part of the SPR809 "Predicting seismic-induced rockfall hazard for targeted site mitigation" research project. Visit the Home Page for more information about the project.
The RAI is a simple morphological based approach for assessing rockfall hazard. Points are assigned one of eight classes based of a classification scheme that utilizes a combination of local slope and roughness values.
From these classifications, the "RAI score" (estimated annual kinetic energy in kilojoules)
is calculated for each point using empircally derived failure depths/rates for each class.
More information, including the background, development, and classification methods used by the RAI
can be found by in the
RAI paper.
Data displayed was collected as part of a research project performed by Oregon State University and funded by the Oregon Department Of Transportation (ODOT) under research project SPR809.
DISCLAIMER: Any opinions, findings, and conclusions or recommendations expressed in this material are those of the author(s) and do not necessarily reflect the views of the Oregon Department of Transportation or Oregon State University.
This page contains point-clouds in a potree viewer. Various operations can by carried out using the tools contained in the sidebar on the top left of the page. Specific information about the project and the RAI can found by selecting the information icon on the right of the page.
Use the left mouse button to orbit around a point. Use the scroll wheel to zoom. Use the right mouse button to pan the view. Double click a point to fly to it and reset the rotation center.
Under "Appearance" in the sidebar, there are various appearance sliders and buttons which you can use to change the quality and settings of the potree viewer, as well as changing the background color under the "Appearance" tab.
Located in the top right corner, the scene box allows users to toggle on/off the RAI class, RAI score and Background pointclouds. The RAI class scalebar can popup class names by hovering the mouse over the class. More information about the RAI classes and RAI score can be found by clicking the info icon at the top of the screen, or the RAI score or RAI class text.
The measurements toolbar enables some basic measurements on the pointcloud (including point query, distance/height and angle measurements, area measurements) Left click to insert a new vertex. Right click to complete a measurement. Measurements are displayed on the screen and also under the "measurements" branch in the scene tree where they can be copied or exported. The "Remove All" (red X) button will clear all measurements.
Under "tools" - "measurement", the cross-section tool allows a cross-section to be created perpendicular to the Z-axis. Create the profile by selecting the tool, left click to add vertices, right click to finish the cross-section. A profile can then be viewed/exported under the "Measurements" branch in the scene tree by selecting - "show 2d profile". The width of the cross-section can also be modified.