BIM-Based Co-Simulation of Fire and Occupants’ Behavior for Safe Construction Rehabilitation Planning

Abstract

Construction renovation projects increase the risk of structural fire, mostly due to the accumulation of combustible construction materials and waste. In particular, when the building remains operational during such projects, the redistribution of occupants and interruptions with access corridors/exit egress can exponentially increase the risk for the occupants. Most construction projects are, however, planned and scheduled merely based on the time and budget criteria. While safety is considered paramount and is meant to be applied as a hard constraint in the scheduling stage, in practice, safe evacuation considerations are reduced to rules of thumb and general code guidelines. In this paper, we propose simulation as a tool to introduce safety under structural fire, as a decision criterion, to be mixed with time and budget for selecting the best construction schedule alternative. We have used the BIM (building information model) to extract the building’s spatial and physical properties; and have applied co-simulation of fire, through computational fluid dynamics (CFD), and occupants’ evacuation behavior, through agent-based modeling (ABM) to estimate the average and maximum required safe egress time for various construction sequencing alternatives. This parameter is then used as a third decision criterion, combined with the project’s cost and duration, to evaluate construction schedule alternatives. We applied our method to a three-floor fire zone in a high-rise educational building in Montreal, and our results show that considering the fire safety criterion can make a difference in the final construction schedule. Our proposed method suggests an additional metric for evaluating renovation projects’ construction plans, particularly in congested buildings which need to remain fully or partially operational during the renovation. Thus, this method can be employed by safety officers and facility managers, as well as construction project planners to guide accounting for fire incidents while planning for these types of projects.

First Responders Space Subdivision Framework for Indoor Navigation

“…An agent-based simulation is a well-established technique for modeling various applications, including evacuations [29]. ABM (Agent-based modelling) is a simulation technique in which an entity functions as an agent.…”

Quantified point clouds and enriched BIM-Models for digitalised maintenance planning

“…Despite these structural challenges, the application range of BIM is continuously increasing. Besides planning of new buildings, BIM is used for fire safety [8], life cycle assessment [9] and even monitoring systems with IoTsensors [10,11] or for the maturity assessment of fresh concrete [12]. Nonetheless, a current review still identifies a lack of BIM-applications in maintenance and transportation infrastructure [13].…”

BIM-centred building diagnoses as a decision support tool for maintenance and repair

“…BIM is increasingly arousing interest around the globe and even becoming mandatory in different countries such as United Kingdom and Singapore [4]. Besides planning of new buildings, BIM is used for fire safety [5], life cycle assessment [6] and even monitoring systems with IoT-sensors [7,8] or for the maturity assessment of fresh concrete [9]. Nonetheless, a current review still identifies a lack of BIM-applications in maintenance and transportation infrastructure [10].…”