The Role of Contractor's Experience Factors In The Process of Prequalification for Green Buildings Projects.

Abstract

Few numbers of articles dealt with the factors that affecting the selection of contractors in green buildings. This study has conducted to identify the Role Of Contractor's Experience Factors In The Process Of Prequalification For Green Buildings Projects. A total of four sub-factors which are (Experience In Delivering Green Building, The Contractor's & Sub-Contractors Experience In Construction Of Intended Product/Project Type, Recommendation Letters From Past Client, Past Health And Safety Performance); Classified as being used widely in the process of contractors’ prequalification in Turkey, and falls according to the opinion of the experts under the factor of Contractor’s Experience. These sub-factors have extracted from a rigorous literature review of a gross 120 articles published in the past 18 years. Then nine extensive interviews have established with engineers and architects who enrolled in Green Building projects, to score the above-mentioned sub-factors relatively on a scale from (1 to 9) to facilitate the utilization of the Analytical Hierarchy Process method (AHP). To avoid any variations in the expert's opinion regarding the priorities Geometric Mean was adopted, and finally, the weight of the sub-factors that used during the process of selection has determined. The results showed that the factors are ranked as the following: (Experience In Delivering Green Building), (The Contractor's & Sub-Contractors Experience In Construction Of Intended Product/Project Type), (Past Health And Safety Performance), (Recommendation Letters From Past Client) Respectively. Furthermore, both of (Experience In Delivering Green Building), and (The Contractor's & Sub-Contractors Experience In Construction Of Intended Product/Project Type) have recognized as dominant factors with a total weight of 58.5%. according to the calculations that based on the evaluations of interviewees.This study aids to minimize the potential risks associated with the decision-making process, which related to the selection of the best contractor. In other words, it helps to award the project to a contractor who can achieve the successful completion of the project, with a preliminary guarantee of attainment for Green Certificate for it through the accumulated experience in this area