Solid waste management (SWM) is one of the most critical global challenges nowadays. It has a severe negative effect on the triple bottom line of sustainability. Construction and demolition waste (CDW) contributes about 50% of the total global annual generated SW. In the particular case of the Middle East and North Africa (MENA) region including Egypt, the SW problem has become a major challenge, and the need to find sustainable solutions is overwhelming. However, the region faces several challenges that hinder the development of an effective and efficient SWM system. This has resulted in the predominance of unsustainable SWM practices such as indiscriminate disposals. The aim of this paper is to investigate the escalating problem of SW in the MENA region, while focusing on CDW in Egypt as a part of the total generated SW, by reviewing the most recent research papers, and technical and governmental reports on the SW problem. The main challenges towards effective and efficient SWM systems and recommendations for improvement are gathered in this study based on the explored literature. Findings from this study are expected to be beneficial to local and central governments, academics, construction industry practitioners, and policymakers contending with the problems of SW in the MENA region and especially CDW in Egypt.

The advent of the Fourth Industrial Revolution (4IR) has triggered a digital transformation across several industries, including the project management (PM) profession. To achieve competitive advantages, construction industry employers must now utilise technology and data for strategy development, project execution, and delivery. This study reviews the concept of PM through research published on the Elsevier Scopus database from 2010 to date using a sequence of bibliometric analyses. Keywords such as “project management” AND “project management tools” AND “project management techniques” AND “construction industry” AND “built environment” were used for article extraction. VOSviewer, a text-mining tool, was used to analyse the bibliometric connection in PM research within the built environment discipline. Through the sequencing of cluster analysis, the findings revealed that research focus is placed on sustainable development (SD), construction safety (CS), engineering education (EE), project management stakeholders (PMS), risk management (RM), and building information modelling (BIM). More so, the current research focus in PM studies is tending towards knowledge management (KM) and construction innovation (CI). Based on a critical review of extant literature, very few studies have bibliometrically analysed and visualised PM studies. This study sets out to fill this gap by examining the key areas of concentration in published works on the PM concept from 2010 to date. Despite the valuable contribution of this study to the PM body of knowledge, generalisations of the results must be made cautiously due to the use of a single database, which in this case is Elsevier Scopus.

Despite the tangible contributions of the construction industry to social development and economic growth, it is known for its natural resources overconsumption and solid waste (SW) generation both of which have major negative impacts on the natural environment. In the particular case of materials waste, the construction industry worldwide accounts for about 50% of global annual generated SW. In addition, construction materials may contribute up to 50% of the total project cost. Accordingly, the negative implications of the construction industry have compelled many nations to develop green building rating systems in order to preserve the environment, promote the economic efficiency of using resources, and enhance the quality of citizens’ lives which are necessary aspects for achieving the triple bottom line (TBL) of sustainability. Recently, Egypt developed the Green Pyramid Rating System (GPRS) in its first version in 2011. Through investigating the GPRS and especially its Materials and Resources (M&R) category, some shortcomings were identified. Towards improving the GPRS, this paper aims to investigate the GPRS and compare it with its peers BREEAM and LEED with a special focus on M&R category. The investigation and comparison results helped proposing suggestions which may improve the GPRS on the categorical level and the criteria level of M&R category. Moreover, the importance of M&R category is demonstrated by a case study through using palm fronds as a green material for concrete reinforcement to prove the positive impact of this category on the TBL of sustainability.