Techno Mart refers to either of two different shopping malls in

Seoul Seoul (; ; ), officially known as the Seoul Special City, is the capital and largest metropolis of South Korea.Before 1972, Seoul was the ''de jure'' capital of the Democratic People's Republic of Korea (North Korea) as stated iArticle 103 ...

South Korea South Korea, officially the Republic of Korea (ROK), is a country in East Asia, constituting the southern part of the Korea, Korean Peninsula and sharing a Korean Demilitarized Zone, land border with North Korea. Its western border is formed ...

. The Gangbyeon branch, located in

Gwangjin District Gwangjin District (Gwangjin-gu) is one of the 25 wards (''gu'') of Seoul, South Korea. It is located on the north bank of the Han River, to the eastern end of Seoul. It was created from neighboring Seongdong District in 1995. Gwangjin District ...

, contains an estimated 2000 electronics and appliances stores. The Sindorim branch is located in

Guro District Guro District (Guro-gu) is a district of Seoul, South Korea, which was separated from Yeongdeungpo District on April 1, 1980. Located in the southwestern part of the city, where besides Yangcheon District and Geumcheon District Guro District ...

Tremors

On 5 July 2011, the top 19 stories of the 39-story building housing the Gangbyeon branch of Techno Mart shook violently for 10 minutes and was evacuated for two days. After study, it was determined that 17 people performing

Tae Bo Tae Bo is a body fitness system that incorporates martial arts techniques, such as kicks and punches, which became popular in the 1990s. It was developed by American taekwondo practitioner Billy Blanks. Such programs use the motions of martial a ...

exercises to " The Power" in a 12th floor fitness center caused the building to vibrate by creating a

mechanical resonance Mechanical resonance is the tendency of a mechanical system to respond at greater amplitude when the frequency of its oscillations matches the system's natural frequency of vibration (its ''resonance frequency'' or ''resonant frequency'') close ...

. The tentative conclusion was the consensus among the six professors from an architectural institute and vibration measurement experts who participated in a recreation of the event. The

Architectural Institute of Korea The Architectural Institute of Korea (AIK) is the only academic organization on architecture in Korea. Established in 1945, today AIK has more than 10,000 members. They represent architects, building engineers, researchers, architecture students ...

was scheduled to release the final results of the safety inspection later in 2011.

References

External links

Gangbyeon Techno MartSindorim Techno Mart
{{Shopping malls in South Korea Shopping malls in Seoul Buildings and structures in Guro District, Seoul Buildings and structures in Gwangjin District