01 - Chapter-1 - Geometric Design Manual-2002 Chapter 1...

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Chapter 1 Geometric Design Manual-2002 Introduction Ethiopian Roads Authority Page 1-1 1. I NTRODUCTION 1.1 General Geometric Design is an essential component in the design development of a highway. This Geometric Design Manual is prepared under the direction of the Ethiopian Roads Authority to establish basic design techniques for economical design of highway geometric including typical sections, horizontal and vertical alignment, and design of junctions. It is intended for use in the design of all roads in Ethiopia. 1.2 Purpose ERA has initiated a comprehensive program to rehabilitate, upgrade and expand the highway network in Ethiopia. To plan and implement the program in a coherent way, using modern standards and technology, ERA decided to establish a uniform framework. Developing a Geometric Design Manual was part of this framework. The purpose of this design manual is to give guidance and recommendations to the engineers responsible for the geometric design of roads in Ethiopia. 1.3 Scope The procedures for the geometric design of roads presented in this manual are applicable to trunk roads, link roads, main access roads, collector roads, feeder roads and unclassified roads as defined by ERA in this Geometric Design Manual. The use of the procedures described in this manual should help in achieving reasonable
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This note was uploaded on 11/05/2010 for the course CIVIL ce-3020 taught by Professor Era during the Spring '10 term at Trinity College Dublin.

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01 - Chapter-1 - Geometric Design Manual-2002 Chapter 1...

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