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On the 4th floor of the building where the accident occurred today (21st), concrete was being poured on the floor at the time.

The Ministry of Employment and Labor, which is conducting an investigation, is closely examining whether the support that should be on each floor of the building did its job.



Next is reporter Park Chan-beom.



<Reporter>



A labor inspector wearing a hard hat looks around the scene of the accident and comes out.



[Labor Supervisor: I can't say more than that finding out the cause is the most important thing because it's the beginning of the accident.]



It was confirmed that the construction site where the accident occurred was raising the building floor using the 'deck plate method'.



A deck plate is a structure used as a substitute for a formwork because it has the effect of reducing construction costs. Concrete is poured into the space to form the floor of the building.



[Jeong Hwan-gil / Construction Manager Gyeonggi-do Construction Division: Due to the shortening of the construction period, the 'deck construction method' is used a lot these days, but there is a rule that reinforcement must be made in the middle if the width is more than 3m.]



4th floor There is a possibility that the downstairs support that supports the deck plate may have been insufficiently installed.



[Jeong Hwan-gil / Construction Manager of Gyeonggi-do Construction Branch of the Construction Union: There is a limit to the load received when pouring cement.

However, there is a limit that the deck can accept.] As the



floor collapse occurred during the concrete pouring work, it is the expert opinion that it is necessary to check whether it is a problem in the construction order.



[Chang-Sik Choi/Professor, Department of Architectural Engineering, Hanyang University: Did you observe these things well, such as the rigidity of the floor plate or the process sequence of pouring concrete after pouring concrete?]



In addition, the 3rd floor space where the workers fell is a parking lot with a different structure from other floors. As a result, there is a possibility that a construction method that is not suitable for the structure was applied to each floor at once, causing a problem.



(Video coverage: Seol Seol-hwan, Yoon Hyung, Video editing: Park Su-sun)



▶ Repeating the 'construction site tragedy'...

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