Geometric Design Projects for Highways by J. Schoon
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Geometric Design Projects for Highways by J. Schoon

Geometric Design Projects for Highways An Introduction 2nd Edition by J. G. Schoon | PDF Free Download.

Contents of Geometric Design Projects for Highways

Chapter 1. Factors Affecting Selection of the Highway Route 

  • Examination of Natural and Man-Made Features 
  • Identification of Technically Feasible Routes 
  • Objectives in Identifying Acceptable Routes 
  • Route Selection and the Design Process 
  • Bibliography of Selected Publications 

Chapter 2. Design Controls and Guidelines 

  • Design Controls 
  • Elements of Design 
  • Cross Section Elements 
  • Depth and Height of Cut and Fill Sections 
  • Intersections at Grade 
  • Economic Analysis 
  • Environmental Requirements 
  • References 

Chapter 3. Application of Geometric Design Principles

  • Preliminary Route Layout and Geometric Design 
  • Example of Developing and Checking Alternative Alignments 
  • Non-Standard Situations 
  • Drainage Provisions 
  • Construction Cost Estimate 
  • Economic Cost 
  • Environmental Impact Analysis 
  • Automated Geometric Design

Chapter 4 Example of a Rural Highway Geometric Design 

  • Example of Preliminary Rural Highway Design 
  • Objectives of Example 
  • Scope of Preliminary Design 
  • Title Page 
  • Table of Contents 
  • Location Map 
  • Background and Specifications 
  • Major Environmental Features 
  • Alternative Routes 
  • Screening of Alternatives 
  • Horizontal Alignment 
  • Profile (Vertical Alignment) 
  • Examples of Curve Designs 
  • Coordination of Horizontal and Vertical Alignments 
  • Cross Sections 
  • Earthwork Computations 
  • Outline of Drainage Requirements 
  • Intersection Design 
  • Construction Cost Estimate 
  • Summary of Likely Environmental Issues 
  • Economic Cost of Project 
  • Summary of Key Technical Features 

Chapter 5. Preliminary Highway Geometric Design

  • Projects 
  • Route Selection and Design Projects 
  • Report Format and Check List 
  • Appendices
  • Topographic map symbols 
  • Construction of Cross Sections 

Preface to Geometric Design Projects for Highways

The main purpose of this book is to assist in consolidating the many elements of highway design and linking them into a route selection and geometric design project.

This second edition is based upon metric units of measurement. In addition, it enlarges upon environmental reporting concerns and presents a discussion of economic cost analysis and its application.

The latter will assist in comparing different projects conducted in a class setting, and is intended to add further realism to the overall design and evaluation process.

Also added are the main features of route selection and design aided by digital terrain and computerized alignment modeling.

This latter approach is becoming more prominent as its cost is reduced and experience is gained in its use by highway agencies and consulting firms.

Intended for use by senior undergraduate students in civil engineering and graduate students who require a basic highway design course, the book is structured to complement highway design theory described in existing texts and design guidelines, and to supplement these in a typical highway design course.

The book is also intended to assist an introductory short-course on geometric design for practicing engineers.

It is assumed that the student has a working knowledge of geometry, trigonometry, soil mechanics, hydraulics, and surveying principles.

These are subjects which most undergraduate civil engineering students have studied during or before their senior year.

Understanding the interrelationship between geometric design and topography is a fundamental requirement in highway engineering, for these essential elements establish the horizontal and vertical alignment of the centerline, upon which all other details of the highway and the right-of-way depend.

The principles remain the same for highways ranging from a simple, two-lane, local road to a multi-lane freeway.

Also, the design of any highway route is a unique undertaking in that detailed features of the terrain and other environmental conditions invariably differ;

Only by working through a practical example which contains the essential design elements can the student be sure of understanding the problems involved,

And of developing realistic solutions. This book concentrates on design of rural highways.

This is because rural highways typically present more extensive problems of earthworks and fitting the alignment into a natural, often mountainous terrain than do urban highways.

Urban highways are typically constrained by property lines and existing rights-of-way which often limit the opportunity to explore the implications of alternative alignments Also,

except for limited access highways, lower speed limits imposed in the urban setting often do not pose the problems of curvature and its coordination experienced in rural environments, although they may have unique problems of their own, particularly intersection design and traffic control.

Many excellent texts deal with these matters and several are mentioned in the bibliography.

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