PAVEMENT DESIGN AND CONSUCTION – INTRODUCTION
Introduction
Pavements are one of the main components of our road transportation and infrastructure systems. The daily expansion of road transportation systems and higher costs of construction, maintenance and rehabilitation of pavements, highway agencies are facing challenges to keep the serviceability of their pavements to an acceptable level. During the last two decades, the issue of proper design, high-quality construction as well as optimum maintenance and rehabilitation of pavements has been the focus of highway agencies, contractors, consulting engineers, and researchers. With the relatively large investment involved in pavements, even a marginal improvement in managing this investment or in the technology involved will affect very large absolute dollar saving. In addition to direct saving in capital costs and maintenance, the indirect benefits to the road users can be equally significant.
This basic course is designed to provide the participants with a solid foundation on which to build further knowledge and skill as they progress through the industry and a basis for more advanced courses in pavement design
This training course will highlight:

  • Functional requirement of Pavements
  • Pavement types – Flexible, Rigid and Semi-rigid
  • Pavement distress mechanisms
  • Design considerations
  • Pavement materials characteristics
  • Determination Traffic loading
  • Pavement design methods

Objectives
The main objective of this course is to provide participants with a thorough understanding of the important factors in pavement design and analysis. Two common pavement types (flexible and rigid) will be explained and the advantages and disadvantages of them will be reviewed. The main focus of the course will be on flexible pavements; however, the main concepts and methodologies for concrete pavement will be covered. Various pavement design methodologies such as AASHTO, use of Design Guidelines and Manuals and DCP method for low volume roads pavement design will be explained in detail. The main aspects of the new Mechanistic-Empirical Pavement Design method developed in the USA will be explained. Computer programs for these pavement design methods will be introduced and participants will learn how to use them.
At the end of this training course, participants will learn to:

  • Functional requirements of pavements and pavement types intended for different purposes.
  • Basics of pavement materials and their performance-related properties.
  • Process of determination of the traffic loading for design
  • The principles behind pavement design
  • The common methods of pavement design
  • Factors affecting the choice of surfacing course, their behavior and characteristics

Training Methodology
This pavement design training course will have subjects presented and covered by the trainer utilizing a variety of proven adult learning teaching and facilitation techniques, focused on examples and best practices from the industry. This will include active participation, in-class practice cases, followed by quiz, active group sessions, video materials, and other activities.
Who Should Attend?
This course should be attended by engineers and technical staff involved in the design, construction, maintenance and rehabilitation of pavement, It will provide them with a basic understanding of how decisions and actions regarding materials, structural design, construction, asset management, and financial and environmental considerations interact to affect the functional, cost and environmental performance of pavements
This is suitable to a wide range of professionals but will greatly benefit: 

  • Engineers, Engineering Technologist and Project Managers working for Local Government, Consultants and Contractors
  • Supervisors and Works Managers
  • Architects involved in Urban Design
  • People who are involved in civil, traffic and transport planning and organization

Course Outline
Module 1:       Introduction to Pavement Design

  • Basic Pavement types and function of the pavement layers
  • Concept of perpetual pavement
  • Wheel load distribution
  • Pavement distress identification

 
Module 2:       Pavement design considerations

  • Traffic Loading
  • Subgrade conditions
  • Availability of good construction materials
  • Environmental conditions
  • Initial Cost / Life cycle cost
  • Maintenance regime

 Module 3:       Determination of Traffic Loading

  • Design Period
  • Traffic Surveys / Initial AADT/vehicle Class
  • Trafiic growth / Cummulative traffic volume
  • Equivalent factors / Cummulative ESA
  • Traffic lanes / carriageway width / shoulders
  • Calculation of design traffic loading – Practical exercise

Module 4:       Pavement Material characteristics

  • Subgrade / Soil classification
  • Capping layer / Subbase
  • Base layer
  • Soil stabilization
  • Surfacing

Module 5:       Flexible Pavement Construction Procedures

  • Introduction
  • Pavement Construction procedures
    • Setting out
    • Site Clearance
    • Earthworks
    • Flexible pavement construction
      • Sub grade preparation
      • Improved Sub grade
      • Sub base
      • Base
      • Surfacing
    • Concrete Pavement Construction
  • Quality Assurance and Quality Control procedures