Road Design Standard Part III- Drainage - 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
3.1 INTRODUCTION
3.1.1 General
3.1.2 Approach and Philosophy
3.2 HYDROLOGY
3.2.1 General
3.2.2 Rational Method
3.2.3 Regional Flood Frequency Analysis
3.3 DESIGN FLOOD STANDARDS
3.3.1 Introduction
3.3.2 Design Floods
3.3.2.1 General
3.3.2.2 Level of Serviceability to Traffic Design Standard
3.3.2.3 Environmental Impact
3.4 HYDRAULIC DESIGN
3.4.1 Introduction
3.4.2 Design Considerations
3.4.2.1 Headwater
3.4.2.2 Culvert in Plan
3.4.2.3 Vertical Profile
3.4.2.4 Multiple Cells
3.4.2.5 Increasing Capacity of Culverts
3.4.2.6 Culverts in Flat Terrain
3.4.2.7 Siltation
3.4.2.8 Site Investigation
3.4.2.9 Safety
(a) Traffic safety
(b) Child safety
3.4.3 Hydraulics
3.4.3.1 General
3.4.3.2 Control at Inlet
3.4.3.3 Control at Outlet
3.4.3.3.1 Determination of energy head (H)
3.4.3.3.2 Determination of Headwater Depth
3.4.3.3.3 Determination of h0
3.4.4 Design Procedure
3.4.5 Culvert End Treatment
3.4.5.1 Introduction
3.4.5.2 Typical End Treatments
3.4.5.3 Scour at Inlets
3.4.5.4 Scour at Outlets
3.4.5.5 Scour Protection
3.5 CHARTS AND NOMOGRAPHS
APPENDIX A Rainfall Intensity - Duration - Frequency
APPENDIX B
APPENDIX C