Assessment of Slope Instability and Risk Analysis of Road Cut Slopes in Lashotor Pass, Iran

Table 10

RHRS ratings for the Lashotor slopes.

Parameter	Value	Rating
Slope height	34	100
Ditch effectiveness	No catchment	81
Average vehicle risk	450	100
Sight distance	Adequate sit distance 100%	3
Roadway width	12 m	6
Structural condition	Continuous joints, adverse orientation	81
Rock friction	Planar	27
Block size	0.5–1 m	37
Climate water	Moderate precip.	9
Rockfall history	Occasional falls	9
Total score		461