Figure 2
The large structured diagram is arranged in multiple vertical columns with labeled sections, connected rows of text, and aligned icons. The top left column is labeled “Architects slash Designers”, and the top right column is labeled “Engineers”. Below the left column are additional grouped sections labeled “Urban Planners”, “Financial Institutions”, and “Quantity Surveyors”. On the right side, additional grouped sections are labeled “Government Authorities” and “Environmental Consultants”. Between the left and right columns, multiple horizontal rows of process descriptions are aligned and connected by arrows. Under “Architects slash Designers”, a group labeled “B I M” contains nodes “P L”, “D E”, “M N”, and “E N”. These align with rows: “Simulate lifecycle performance and set sustainability goals”, “Design systems for disassembly, track material inventories, and embed recovery options”, “Specify sustainable materials and coordinate with manufacturers”, and “Architects use B I M to plan and guide deconstruction processes”. A second grouped chain labeled “D T” with nodes “P L”, “O P”, and “E N” aligns with “Simulate future building performance and identify sustainable options”, “Monitor building performance in real-time, adjusting for energy efficiency and predictive maintenance”, and “Map and document materials for efficient disassembly and recovery”. A node “G D” with “D E” aligns with “Explore multiple design scenarios and identify resource-efficient configurations”. A grouped node “I o T” with “M N”, “C O”, and “O P” aligns with “Monitor real-time production workflows, ensuring minimal resource wastage”, “Track material usage and ensure compliance with circular construction goals”, and “O P” aligns with “Monitor system performance and resource consumption”. A node “A R slash V R” with “D E” aligns with “Visualize construction progress and ensure that circular design principles are implemented on-site”. A node “3 D P” with “M N” aligns with “Integrate 3 D printing into the design process to prototype sustainable, modular components”. Under “Urban Planners”, nodes “G I S” with “P L” align with “Analyse land use, resource availability, and environmental constraints to design sustainable urban areas”, nodes “E N” align with “Identifying optimal locations for recovery and recycling infrastructure, improving city-wide waste management systems”, and node “D R” aligns with “E N” with the text “Aerial surveys to assess infrastructure for deconstruction planning and material recovery potential”. Under “Financial Institutions”, node “B D” with “P L” aligns with “Leverage big data analytics to identify trends in circular construction projects and assess market readiness for innovative sustainable solutions”. Under “Quantity Surveyors”, node “B D” with “P L” aligns with “Evaluate market trends, pricing fluctuations, and material availability, ensuring cost-effective procurement”. On the right under “Engineers”, nodes “B I M” with “P L” align with “Set technical specifications, conduct lifecycle analysis, and align project goals with sustainability objectives”. Nodes “D E” align with “Design systems for energy efficiency, material optimization, and adaptability”, and nodes “E N” align with “Map materials and components for systematic deconstruction and recovery”. A node “D T” with “P L” aligns with “Simulate project performance and identify resource-saving strategies”. A node “O P” aligns with “Monitor infrastructure systems in real time, enabling predictive maintenance and resource optimisation”. A node “E N” aligns with “Map systems and components for deconstruction, aiding material recovery”. A grouped node “I o T” with “M N” aligns with “Monitor production workflows and ensure material sourcing aligns with C E goals”. A node “C O” aligns with “On-site monitoring of systems and material usage to reduce waste and improve efficiency”. A node “O P” aligns with “Tracking building performance and ensuring energy-efficient operations”. A node “A I slash M L” with “M N” aligns with “Optimize production workflows and identify inefficiencies in resource usage”. A node “E N” aligns with “Identify materials for recovery and recycling”. A node “A R slash V R” with “C O” aligns with “Visualize and verify the implementation of circular designs on-site”. Under “Government Authorities”, node “B C” with “T N” aligns with “Ensures transparency and accountability in public procurement, tracking supplier credentials and ensuring materials comply with sustainability standards”. A node “E N” aligns with “Track deconstruction and recycling processes, ensuring recovered materials meet regulatory standards”. A node “P L” with “GIS” aligns with “Assess land use, resource distribution, and environmental impacts, enabling sustainable urban development”. A node “O P” aligns with “Monitors urban infrastructure performance, tracking energy use and waste generation to ensure sustainable operation”. Under “Environmental Consultants”, node “G I S” with “P L” aligns with “Assess environmental conditions, such as topography and ecological sensitivity, to ensure sustainable land use and project siting”. A node “E N” aligns with “Track deconstruction and recycling processes, ensuring recovered materials meet environmental standards”. A node “A I slash M L” with “P L” aligns with “Assist consultants in analysing environmental data, predicting impacts, and recommending low-impact alternatives for project development”. A node “O P” aligns with “Monitor building performance, suggesting improvements to enhance energy efficiency and reduce environmental footprints”. Along each row in both column, small colored circular markers labeled “D e”, “E f”, “R d”, “R e”, “R s”, “Rc”, and “R v” appear. At the bottom, three legend sections are shown. “Circular Economy Principles” lists “Design (D e)”, “Efficiency (E f)”, “Reduce (R d)”, “Repair (R e)”, “Reuse (R s)”, “Recycle (R c)”, and “Recovery (R v)”. “Construction Phase” lists “Planning (P L)”, “Design (D E)”, “Tendering (T N)”, “Manufacturing (M N)”, “Construction (C O)”, “Operation (O P)”, and “End-of-Life (E N)”. “Construction 4.0 Technologies” lists “Building Information Modelling (B I M)”, “Cloud Computing (C C)”, “Robotic Deconstruction (R D)”, “Big Data Analytics (B D)”, “Digital Twins (D T)”, “Robotics and Automation (R A)”, “Geographic Information Systems (G I S)”, “3 D Printing (3 D P)”, “Internet of Things (I o T)”, “Artificial Intelligence and Machine Learning (A I slash M L)”, “Wearable Technology (WT)”, “Augmented Reality and Virtual Reality (A R slash V R)”, “Generative Design (G D)”, “Blockchain Technology (B C)”, “Digital Supply Chain Management (D S C)”, and “Smart Energy Grids (E G)”.Adoption of construction 4.0 technologies by architects/designers, engineers, Urban planners, government authorities, financial institutions, environmental consultants, and quantity surveyors across construction phases for CE practices