Highway Slope Manual

9
LIST OF TABLES
Table
No.
Page
No.
1.1 Highway Slope Incidents in Recent Years Involving 16
Fatalities and Injuries
2.1 Guidelines for Including Slope Upgrading and Landslide 26
Mitigation Works as Part of a Road Improvement Project
2.2 Geotechnical Hazards That Need to be Considered for a 28
Highway Project
2.3 Guidelines on When a Geotechnical Assessment Should 29
be Carried Out for a Highway Project
3.1 Potential Uses of Different Types of Information to be 34
Collected at Desk Study Stage for a Highway Project
4.1 General Guidance on the Geotechnical Design/Stability 39
Assessment of Slopes and Retaining Walls
4.2 Consequence-to-life Categories of Highway Slopes 40
4.3 Economic Consequence Categories of Highway Slopes 40
4.4 Recommended Minimum Factors of Safety for the Design 43
of New Highway Slopes for a 10-year Return Period
Rainfall
4.5 Recommended Minimum Factors of Safety for the 44
Stability Assessment of/Design of Remedial or Preventive
Works to Existing Highway Slopes
4.6 Key Factors to be Considered in the Design of New Rock 44
Cut Slopes along Highways
5.1 Examples of Locations Which May be Considered as 49
‘Critical' with Regard to the Impact of Drainage on
Stability of Highway Slopes
7.1 Commonly Used Methods of Rock Breaking 63
7.2 Range of Safety Precautions for Rock Excavation 65
Adjacent to Roads
9.1 Classification of Landslide Incidents Affecting Roads 77