Highway Research Record

VI. RESEARCH WORK DONE IN ACADEMIC INSTITUTIONS RELATED TO THESIS WORK
A. HIGHWAY PLANNING, MANAGEMENT, PERFORMANCE EVALUATION AND INSTRUMENTATION
Application of Linear Scheduling Method for Highway Construction Projects

Duration:July 2001 to December 2004
(i) Misrimal Navajee Munoth Jain Engineering College, Chennai (R)
(ii) Anna University, Chennai (C)

Scope and Objective
(i) An overview of Linear Projects and Linear Scheduling Method (LSM)
(ii) Limitation of CPM when applied to linear projects
(iii) Determination of critical paths, floats of activities using the linear scheduling method
(iv) Comparison of CPM/PERT with LSM
(v) To establish linear scheduling method as best method for scheduling linear projects in Indian Highway Industry

Methodology
(i) Collection of project schedules of various completed and ongoing road projects
(ii) To design the LSM framework for the collected project schedules
(iii) Understanding the parameters in the LSM framework controlling the critical paths and floats of activities
(iv) Developing an algorithm and codifying the method by developing a software
(v) Validating the software for the collected project schedules
(vi) Comparison of results of targeted and actual schedules of a road project using the software
(vii) Comparison of LSM with CPM/PERT and presentation with the results obtained

Findings and Conclusions
(i) In linear projects, the whole activity or portions of an activity or even the start or end point of the activity can be critical.     This technique allows us to determine the exact values of the critical portions of activities, their floats and progress rates     etc and can be displayed as a graph
(ii) Crashing of activities using the LSM can be studied by determining the critical paths and floats and also represented in the      LSM schedule
(iii) In linear projects with full span of uniform progress rates, all activities become critical when the least time and least distance      intervals between any two consecutive activities are the same at the start and end of activities or when the succeeding      activity starts only on the completion of the preceding activity.