Although green building technologies (GBTs) have been advocated in the construction 12 industry to address sustainability issues, their adoption is still plagued with barriers. The 13 barriers that hinder GBTs adoption need detailed investigation. However, few studies have 14 been conducted on the barriers to GBTs adoption in developing countries such as Ghana. 15 This study aims to investigate the critical barriers to GBTs adoption with reference to the 16 Ghanaian construction market. To achieve the objective, 26 barriers were identified from a 17 comprehensive literature review, and a questionnaire survey was performed with 43 18 professionals with green building experience. The ranking analysis results indicated that 20 19 barriers were critical. The top three most critical barriers were higher costs of GBTs, lack of 20 government incentives, and lack of financing schemes (e.g., bank loans). A comparative

Purpose The purpose of this paper is to identify the barriers to implementing lean construction in the Kingdom of Saudi Arabia (KSA) construction industry and to prioritise the principal factors that constitute these barriers. Design/methodology/approach A literature review was initially used to reveal the global barriers to implementing lean construction. Subsequently, these barriers were incorporated into a structured questionnaire, and a convenience sample of 282 construction professionals in the KSA construction industry was surveyed. The results were analysed using mean item score (MIS), Mann–Whitney U test and principal component analysis (PCA). Findings The findings revealed 22 barriers to lean construction implementation in the KSA construction industry. Principal factors that constitute these barriers were found to be traditional practices, client related, technological, performance and knowledge and cost-related barriers in descending order of pervasiveness. The study also proposes solutions to overcome these principal barriers. Originality/value This study provides a global overview of the barriers to implementing lean construction. It contributes to the body of knowledge, as it uncovers for the first time the barriers to implementing lean construction in the KSA construction industry with reference to the socio-cultural, economic and operational context of the KSA. Thus, it is relevant to other countries in the Middle East because of their shared similarities to the KSA. Furthermore, the solutions proposed to overcome these barriers in the KSA construction industry can be applied in other countries where similar barriers are identified.

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Examining issues influencing green building technologies adoption: The United States green building experts' perspectives, Energy and Buildings (2017),

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