Abstract
Sustainable procurement is an emerging theme in the construction industry across the globe. However, organizations in the construction industry often encounter impediments in improving environmental performance in construction projects, especially in procurement. Besides its other facets, procurement of construction equipment is inherited to be capital-intensive and vital for managing environmental concerns associated with built environment projects. In this regard, selection criteria in such procurement processes are generally supportive of considering cost and engineering specifications as key parameters. However, sustainability apprehensions in today’s Malaysian construction industry have mounted pressure on industry professionals to rethink their equipment acquisition strategies. The notion of green or sustainable procurement is still infancy for the Malaysian construction industry and facing challenges for embedding it in the current procurement practices. This research aims to address these apprehensions by considering six main criteria, namely, life cycle cost (LCC), performance (P), system capability (SC), operational convenience (OC), environmental impact (EI), and social benefits (SBs), and their 38 subcriteria towards procurement of sustainable construction equipment. A multicriteria-based equipment selection framework on the triple bottom line of sustainability in the context of the Malaysian construction industry has been developed and tested. The application of analytical hierarchy process (AHP) established the sustainable procurement index with a consistent sensitivity analysis results. As such, the proposed procurement index shall help decision-makers in the process of the acquisition of sustainable construction equipment in Malaysia.
Highlights
Muhammad Waris,1 Shrikant Panigrahi,2 Abdullah Mengal,3 Mujeeb Iqbal Soomro,4 Nayyar Hussain Mirjat,5 Mehfooz Ullah,1 Zarith Sufia Azlan,1 and Asadullah Khan 1
Introduction e procurement of construction equipment is a complex and multifaceted process [1]. e main objective in such a process is to arrive at the selection of the right equipment for carrying out scheduled tasks with high efficiency, productivity, and economic viability [2]. ese facts are duly supported in the Malaysian construction industry wherein construction equipment selection is termed as a strategic decision and has a high economic impact on the project budget
As Malaysia is planning for an increased number of construction projects to meet its infrastructure needs, it becomes crucial for the industry to understand and practice sustainable procurement procedures for reducing the negative environmental impact and hazards
Summary
The analytic hierarchy process (AHP) method of the MADM branch of MCDM is used to develop a sustainability assessment framework for the sustainable selection of construction equipment. Analytic hierarchy process (AHP) is considered as the most effective and commonly used method of MCDM in various studies of the diverse field. It is a method to evaluate subjective and objective functions in multicriteria decision-making and help users to reach on an agreeable solution. Another important feature of AHP is to achieve consensus in the group decisionmaking process. The calculation of the inconsistency index is another salient feature of AHP It makes possible for the decision-makers to check the consistency of their judgments. AHP is commonly being used in sound judgment decision-making due to the linkage of linguistic data [124]. e main steps required in the formulation of AHP framework comprises of hierarchy construction, pairwise comparisons, deriving relative weights, consistency checking, and synthesizing results [118]
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