Construction Productivity Graph: a comprehensive methodology based on BIM and AI techniques to enhance productivity and safety on construction sites

The construction sector is characterised by distinctive issues, such as product uniqueness, the reluctance to introduce innovation, player fragmentation leading to a low productivity level and a related high level of risk intended due to the increased likelihood of damages and injuries, and the consequences on construction productivity. The common European Union regulatory framework provides strict regulations about on-site working activities, but there is still no standard for the environmental and social sustainability of construction sites. Productivity assumes a crucial role in reducing the environmental impact of construction and positively influences workers’ safety due to higher levels of organisation, reducing time, costs, resource consumption and wasted time. This paper presents a methodology developed by augmenting BIM systems capabilities using Agent-based simulation techniques to simulate and optimise on-site work. The augmented BIM model allows analysis of site conditions in terms of space utilisation and resource allocation, resulting in the ‘Construction Productivity Graph – CPG’. This graphic representation synthesises the results obtained, making it possible to visualise the work progression in different working areas with the resources employed, allowing for the management of productivity rates and the verification of work safety conditions.