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Considering the world population, an additional 415.1 billion m² of built floor will be needed by 2050, which could worsen the environmental impact of the construction industry that is responsible for one-third of global Carbon Emissions (CEs). Thus, the current construction practices need to be upgraded toward eco-friendly technologies. Building Information Modeling (BIM) proved a significant potential to enhance Building and Infrastructure (B&I) ecological performances. However, no previous study has evaluated the nexus between BIM and B&I CEs. This study aims to fill this gap by disclosing the research evolution and metrics and key concepts and tools associated with this nexus.

A mixed-method design was adopted based on scientometric and scoping reviews of 52 consistent peer-reviewed papers collected from 3 large scientific databases.

This study presented six research metrics and revealed that the nexus between BIM and CEs is a contemporary topic that involves seven main research themes. Moreover, it cast light on six key associated concepts: Life Cycle Assessment; Boundary limits; Building Life Cycle CE (BLCCE); Responsible sources for BLCCE; Green and integrated BIM; and sustainable buildings and related rating systems. Furthermore, it identified 56 nexus-related Information and Communication Technologies tools and 17 CE-coefficient databases and discussed their consistency.

This study will fill the knowledge gap by providing scholars, practitioners and decision-makers with a good grasp of the nexus between CEs and BIM and paving the path toward further research, strategies and technological solutions to decrease CEs of B&I sectors and their impacts on the climate change.

The unexpected spread of COVID-19 rapidly switched from a health crisis to an economic one. The Architectural, Engineering and Construction (AEC) industry experienced drastic impacts, especially in Africa. Several studies investigated COVID-19 impacts on the AEC industry, but very few were conducted in Africa. This study aims to cover this gap, address detailed overview of negative and positive impacts of COVID-19 on the AEC field, especially in the different African regions, and highlight their causes and the measures taken to overcome them.

The authors combined a Preferred Reporting Items for Systematic Reviews and Meta-Analyses-based Systematic Literature Review (SLR) and a survey involving 87 AEC companies operating in Africa. The SLR initially used four scientific databases; however, considering the limited Africa-related found data, institutional and governmental databases were also included.

Globally, implementing the mandated restrictive measures against COVID-19 caused significant losses for developers, designers and contractors but helped the information and communication technologies operators to thrive. In the five African regions, the AEC industry experienced 22 heavy impacts that can be split into four categories: financial, managerial/strategic, operational and opportunities. This paper thoughtfully explains the causes of COVID-19 impacts and presents the undertaken measures by the African private and public sectors to overcome them. Generally, the African AEC industry lost 51% of the total sales in 2020.

This paper contains all aspects related to health hazard influences on the AEC industry, especially in Africa. Researchers and decision-makers may use it to build new approaches or strategies related to risk management or design technological solutions.