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Rockfall & Slope Stability Assessment
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Roadside rock slope and embankment assessment using rockfall hazard rating factors to document slope geometry, geology, ditch effectiveness, and history.
FHWA Rockfall Hazard Rating System (RHRS)FHWA-SA-93-057 Rockfall Hazard RatingAASHTO Geotechnical Guidance
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Site Information
- Slope ID / route and milepost *
- Date of assessment *
- Slope height (ft)
- Slope type (rock cut, mixed, soil, embankment)
Slope Geometry & Roadway
- Is the slope angle and height documented for the hazard rating? *
- Is decision sight distance adequate for drivers to react to fallen rock? *
- Is roadway width (shoulder + lane) sufficient for avoidance maneuvers?
- Average vehicle risk / traffic exposure noted?
Geologic Character
- Are adverse joint orientations, bedding, or discontinuities present? *
- Is differential erosion or undercutting of weak layers observed?
- Is there evidence of water on the slope or seepage from joints?
- Estimated maximum block size (ft)
Catchment & Mitigation
- Is the catchment ditch effective at retaining rockfall (per Ritchie criteria)? *
- Are existing mitigation measures (mesh, bolts, barriers, shotcrete) intact?
- Is rockfall history/frequency at this location documented? *
Rating & Priority
- Preliminary RHRS score
- Is this slope recommended for detailed rating or mitigation design? *
- Notes and recommendations
Rockfall & Slope Stability Assessment 체크리스트 전체 다운로드
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