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Busan, the windows of skyscrapers were broken in a row due to the recent typhoon that struck one after another.

This is because the so-called building wind, which blows harder among tall buildings, increased the power of the typhoon.

It is pointed out that this is not a natural disaster, but rather that it is the problem of people who have built high buildings without any preparation.



Reporter Song Seong-joon covered it.



<Reporter>



Hundreds of glass windows in three buildings in Haeundae L City, Busan, with the highest 100 floors or more were broken.



[Residents near L City in Haeundae, Busan: Now, if you only blow the wind and give a typhoon warning, you have to live with your heart.

(After entering L City?) Yes.] During



Typhoon High Line, the maximum instantaneous wind speed around it was 50m per second.



It is more than twice the wind speed of the beach at the same time.



At the peak of the typhoon, I couldn't even measure it.



[Kwon Soon-cheol/Professor, Department of Social and Environmental Systems Engineering, Pusan ​​National University: L-City was unable to observe at 8 o'clock.

When it was 3 o'clock in the morning, the wind was already too strong, so I was able to judge whether or not I should observe it now.]



Building wind is like the wind hitting each other as the wind passes between tall buildings and the wind hitting the building blows down. It is a phenomenon that turns into a double strong gust as it descends.



As the damage increased, there were even claims to legislate the building style as a new disaster.



Building style is not yet included in natural disasters under the Disaster and Safety Act, and the building code is also not subject to disaster environmental impact assessment.



Busan City even exempted the environmental impact assessment for skyscrapers along the coast even though damage was expected.



This is why criticism comes out that it is not a natural disaster, but a predicted talent.



Japan and Germany create a wind path in the middle of the building, while the UK installs a large wind turbine on the outer wall of the building to prevent building wind.



In areas susceptible to typhoons, it is urgent to prepare countermeasures, such as mandating building wind environmental impact assessments from the building design or city planning stage.



(Video coverage: Jung Kyung-moon, video editing: Yoo Mira, VJ: Kim Hyeong-jin)