Appendix-E - Appendix E Geometric Design Manual-2002...

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Unformatted text preview: Appendix E Geometric Design Manual-2002 Typical Cross Sections Ethiopian Roads Authority Page E-1 E. T YPICAL C ROSS S ECTIONS AND S TANDARD C ROSS S ECTIONS The desirable standards to be adopted in the typical road design are depicted in Figures E-T1 to E-T4. The geometry shown is set taking into account the requirements of vehicular traffic and the needs of pedestrians and non-motorized traffic. Note that many towns have master plans that will show a slightly different configuration from the town sections shown. In such cases, our typical section should represent the minimal requirements. Standard Cross Sections for road classes from DS1 to DS10 are shown in Figures E-1 to E- 10. Appendix E Typical Cross Sections Geometric Design Manual-2002 Page E-2 Ethiopian Roads Authority Figure E-T 1: Typical Fill & Cut Sections. Appendix E Geometric Design Manual-2002 Typical Cross Sections Ethiopian Roads Authority Page E-3 Figure E- T2: Escarpment Section Appendix E Typical Cross Sections Geometric Design Manual-2002 Page E-4 Ethiopian Roads Authority Figure E-T3: Two Lane Town Section Appendix E Geometric Design Manual-2002 Typical Cross Sections Ethiopian Roads Authority Page E-5 Figure E-T4: Four Lane Town Section Appendix E Typical Cross Sections Geometric Design Manual-2002 Page E-6 Ethiopian Roads Authority Figure E-1: Design Standard 1 Normal & Town Sections (DS1) Crossfall 2.5 % Crossfall 2.5 % 4 % 4 % Variable side slope see table 6.1 Variable side slope see table 6.1 C L Carriageway Width 2X7300 Normal section of design standard DS1 Pavement structure Crossfall 2.5% Covered Drain 15 Crossfall Concrete Curb Covered Drain 15 3000 2500 Footway 3000 2500 Footway 2 X Lane width 2 X Lane width Varies 5m min....
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Appendix-E - Appendix E Geometric Design Manual-2002...

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