# Visual Language-Aided Construction Fire Safety Planning Approach in Building Information Modeling
## 6 Conclusions  
The growing challenges for fire safety concerning economic progress have encouraged the evolution of fire science and technology. Many researchers have currently developed building information modeling (BIM) technologies for construction safety planning to enhance safety in the pre-construction phase, such as checking the BIM model to prevent fall risks, BIM 4D-supported limited access zone identification and visualization, and excavation safety modeling. However, fire safety planning--mainly firefighting equipment planning--still relies on conventional methods and has not yet been appropriately explored. To address the issue, this research work offers rule-based construction fire safety planning using a visual language approach in BIM. The proposed approach includes three core modules, such as the RELD module, DCFS module, and CSPS module. The RELD module converts the OSHA fire safety rules into mathematical logic, and the DCFS module presents the development of the proposed approach, such as the conversion of rules from mathematical logic into computer language. The three sub-modules of the DCFS module visualize the results of the research work, for instance, generation of appropriate portable firefighting equipment planning, bill of quantities of firefighting equipment, and escape route plan. The CSPS module simulates the system into a common BIM environment. The developed fire safety rule-based approach has been successfully implemented in a sample project case study, and the vital benefits are summarized as follows.  
* It is found that the con-fire safety system semi-automatically generates and visualizes the portable firefighting equipment installation plan based on OSHA safety rules, which will minimize the workload and reduce the time of the safety planner. This research depicted that the proposed approach has significant potentials to enhance construction fire safety planning, which is inevitable to deal with the recently reported fatalities and property damages.
* Integrating firefighting equipment installation plan with the escape route planning is a significant additional contribution of this study. It is anticipated that this approach would help decision-makers in developing practical fire safety plans. This full package of the construction fire safety planning and multi-agent simulation could also be used for the training of the workers and can be extended to the virtual contents by employing Virtual Reality (VR) technology.
* Portable firefighting equipment installation was witnessed along with their quantity take-off and appropriate locations in the case study. Hence, the con-fire safety system can also predict the location coordinates and required fire preventive resource quantities in advance. Likewise, integrating this fire safety planning with BIM-4D will provide the cost based on the just-in-time approach.  
Furthermore, the developed approach could open a new direction of research in the digital twin domain, such as integrating the multi-agent simulation with real humans and updating. In this way, the workers will understand the shortest path towards the fire extinguishers or outside, whatever the case may be. It is expected that the proposed approach has the potential to help designers in practical job sites.  
Conceptualization, N.K. and D.L.; methodology, N.K. and A.K.A.; software, A.K.A. and N.K.; validation, A.K.A., S.V.-T.T. and D.L.; formal analysis, C.P.; writing--original draft preparation, N.K.; writing--review and editing, N.K. and C.P.; visualization, X.X.; supervision, C.P.; project administration, D.L. All authors have read and agreed to the published version of the manuscript.  
This research was supported by the Chung-Ang University research grant in 2018 and National Research Foundation of Korea (NRF) grant funded by the Korea government (MSIP) (No. NRF- 2019R1A2B5B02070721).  
The authors declare no conflicts of interest.