Author: Nwosu Ikechukwu
Affiliation: Nnamdi Azikiwe University Awka
This study aims at identifying and analyzing the significant factors for contractor evaluation and selection in Nigeria and to proffer the preferred (best) criteria and method for evaluation and selection of contractors for optimum project performance. Literature review was the initial means of information gathering from which 67 variables were identified as being used in evaluation and selection of contractors. Questionnaires were sent out to 60 practicing construction professionals based in Port Harcourt and had a response rate of 43.3%. The responses to the questionnaires were then analyzed using factor analysis from which it was determined that the variables had common underlying factors. The significant factors determined after reduction were five namely; (1) Managerial factors, (2) Quality and Standard factors (3) Resource Availability factors, (4) Duration and Cost factors and (5) Location factors. It was also revealed that Nigerian construction professionals prefer multi-criteria method of evaluation of contractors to single criteria method and would also allocate higher marks to technical evaluation than financial evaluation in selecting a contractor for a project. However, very few of them know about modern multi-criteria selection methods such as Analytical Hierarchy Process, Analytical Network Process, Evidential Reasoning, etc developed by researchers.
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