Road Design Standard Part I- Geometry - MPWT OF KINGDOM OF CAMBODIA
The Cambodia Road Design Standard is intended to be used for the design of all new roads in the Kingdom of Cambodia. The Cambodian Road Design Standard consists of the following complementary documents which shall be considered together:
- CAM PW 03-101-99 Road Design Standard – Part 1 - Geometry;
- CAM PW 03-102-99 Road Design Standard – Part 2 - Pavement;
- CAM PW 03-103-99 Road Design Standard – Part 3 - Drainage;
For the purpose of regulating and interpreting the provisions of this Standard, the AUTHORITY shall be the Cambodian Ministry of Public Works and Transport.
TABLE OF CONTENTS
2.1 INTRODUCTION
2.2 PAVEMENT DESIGN SYSTEM
2.2.1 General
2.2.2 Pavement Design System For New Pavements
2.2.2.1 Input Variables
2.2.2.2 Selecting a Trial Pavement Cross -Section
2.2.3 Design System For Pavement Overlays
2.2.3.1 General
2.2.3.2 Evaluating the Existing Pavement
2.2.3.3 Recognition of the Existing Pavement's Needs
2.2.3.4 Selection of Overlay Thickness
2.3 ENVIRONMENT
2.3.1 General
2.3.2 Moisture Environment
2.3.3 Temperature Environment
2.4 SUBGRADE EVALUATION
2.4.1 General
2.4.2 Measures Of Subgrade Support
2.4.3 Factors To Be Considered In Estimating Subgrade Support
2.4.4 Methods Of Estimating Subgrade Support Values
2.4.5 Field Determination Of Subgrade CBR
2.4.5.1 In-situ CBR Test
2.4.5.2 Cone Penetrometers
2.4.6 Laboratory Determination Of Subgrade CBR And
Elastic Parameters
2.4.6.1 Determination of Density for Laboratory Test
2.4.6.2 Determination of Design Moisture Content (DMC)
2.4.7 Adoption Of Presumptive CBR Values
2.5 TRAFFIC INVESTIGATION
2.5.1 Estimating Flows
2.5.1.1 Baseline traffic flows
2.5.1.2 Traffic Forecasting
2.5.2 Axle Loading
2.5.2.1 Axle load surveys
2.5.2.2 Axle Configurations and Equivalences
2.5.2.3 Design Lanes
2.5.3 Design Period
2.5.4 Traffic Growth
2.5.5 Design Traffic For Flexible Pavement
2.5.6 Design Traffic For Rigid Pavements
2.6 PAVEMENT MATERIALS
2.6.1 Granular Materials
2.6.1.1 Introduction
2.6.2 Modified Materials
2.6.3 Bitumen
2.6.3.1 Prime Coat
2.6.3.2 Tack Coat
2.6.3.3 Bituminous Surface treatment
2.6.3.3.1 Bituminous materials
2.6.3.3.2 Aggregates
2.6.3.4 Asphaltic Concrete
2.6.4 Concrete
2.6.4.1 Introduction
2.6.4.2 Sub-base Concrete
2.6.4.3 Base Concrete
2.7 DESIGN OF NEW FLEXIBLE PAVEMENTS
2.8 DESIGN OF RIGID PAVEMENTS
2.8.1 General
2.8.2 Pavement Types
2.8.2.1 Cement Concrete Pavements
2.8.2.2 Asphalt Surfaced Rigid Pavements
2.8.3 Factors Used In Thickness Determination
2.8.3.1 Strength of Subgrade
2.8.3.2 Concrete Strength
2.8.3.3 Design Traffic
2.8.3.4 Provision of Sub-base
2.8.3.4.1 General
2.8.3.4.2 Bound Sub-base
2.8.3.4.3 Lean Rolled Concrete Sub-base
2.8.3.4.4 Lean-Mix Concrete Sub-base
2.8.3.4.5 Debonding of the Sub-base and Base
2.8.3.5 Concrete Shoulders
2.8.3.6 Load Safety Factors
2.8.4 Base Thickness Design Procedure
2.8.4.1 General
2.8.4.2 Base Thickness Design Procedure
2.8.4.3 Minimum Base Thickness
2.8.4.4 Provision of Dowels and Tie Bars
2.8.5 Reinforcement Design Procedures
2.8.5.1 Special Requirements for Reinforcement In Jointed Unreinforced Pavements
2.8.5.2 Reinforcement In Jointed Reinforced Pavements
2.8.5.3 Reinforcement In Continuously Reinforced Pavements
2.9 OVERLAY DESIGN
2.9.1 General
2.9.2 Basic Principles
2.9.3 Pavement Testing
2.9.3.1 Method of Deflection Testing
2.9.3.2 Selection of Test Sites
2.9.3.3 Test Modes
2.9.3.4 Other Tests
2.9.3.5 Measurement of Pavement Temperature
2.9.4 Pavement Evaluation
2.9.4.1 Selection of Homogeneous Sections
2.9.4.2 Characteristic Site Temperature
2.9.4.3 Adjustment of the Characteristic Deflection and Characteristic Curvature to Account for the Testing Temperature
2.9.4.4 Adjustment of Deflection Data to Account for Seasonal Moisture Variations
2.9.4.5 Design Traffic
2.9.4.6 Performance Criteria (Design Deflection and Curvature)
2.9.4.7 Determination of Pavement Needs
2.9.5 Selection Of Thickness
2.9.5.1 Granular Overlays
2.9.5.2 Asphalt Overlays
2.9.5.3 Characteristic Deflection (adjusted for temperature) Exceeds the Design Deflection
2.9.5.4 Characteristic Deflection (adjusted for temperature) Less Than Design Deflection
2.9.5.5 Adjustment of Overlay Thickness to Allow for Locality Temperature
2.9.5.6 Example of Asphalt Overlay Design
APPENDIX A
APPENDIX B
APPENDIX C
APPENDIX D
APPENDIX E
APPENDIX F
APPENDIX F
APPENDIX F
APPENDIX F
APPENDIX G
APPENDIX H