The opening situation is one of the hazardous situations that might occur in construction buildings, with falling from height (FFH) appearing as one of the major accidents. Building Information Modelling (BIM) can be used as a systematic risk management tool by automatically detecting and eliminating hazards. The growth of BIM technology can make it be useful to generate a construction schedule not only for the progress of the construction work, but also to identify the possible hazard such as fall from a height.
However, recent studies showed lack of information about utilizing BIM to create construction schedule that involves opening situation. Furthermore, the 4D BIM system, which can be used more conveniently by the workers, has not been studied. Therefore, this study aimed to display the creation of a schedule according to the work item, which can then be created based on the actual timeline schedule. A 4D BIM approach was utilized to find out the types of possible fall in the construction was established. The result of this study showed that the opening can be identified manually when the simulation is executed by using Navisworks software.
On the other side, the utilization of the Dynamo software script helped in illustrating the openings by multiple fall scenarios. This study observed three kinds of opening which differ by their situation; (1), after the buildings are completed, (2) generated by permanent structures that are unfinished, and (3) during construction to fulfill construction requirements. Protection of these openings was successfully carried out by providing visual safety planning with temporary safety measurements. From an application development point of view, this study could offer a readily available plug-in and solution for project manager to know the possible opening areas that can cause fall hazard during construction.

Keywords: Building Information Modeling, 4D BIM, Safety Management, Fall From a Height, Opening in the Construction, Schedule.

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