Quantitative Assessment of Impact Factors for Palarivattom, Kundanoor and Vyttila Flyovers

Environmental and social impacts are common in construction industry and create major concerns for project performance. Environmental impacts are caused by many factors. The aim of this paper is to identify impact factors on three flyovers: Palarivattom, Kundanoor and Vyttila and analyze these factors with the relative importance index method. For this purpose, 24 different environmental factors were identified, categorized into three major groups through detailed literature review and interviews with experts from the construction industry. The relative importance of these impact factors was quantified by the relative importance index method. The ranking of the factors and groups were demonstrated according to their importance level on impacts. According to the case study results, the factors and groups contributing the most to impact factors (those needing attention) were discussed, and some recommendations were made to minimize and control these impacts in major construction projects.