|Ark Hills Sengokuyama Mori Tower|
|Type||Offices, shops, residences|
|Location||Roppongi, Tokyo, Japan|
|Construction started||October 2009|
|Architectural||206.7 m (678 ft)|
|Tip||217.1 m (712 ft)|
|Top floor||198.4 m (651 ft)|
|Observatory||198.4 m (651 ft)|
|Floor count||51 (47 above ground, 4 underground)|
|Floor area||143,462 m2 (1,544,210 sq ft)|
|Design and construction|
|Architect||Irie Miyake Architects and Engineers|
Pelli Clarke Pelli Architects
|Developer||Mori Building Company|
|Main contractor||Obayashi Corporation|
The Ark Hills Sengokuyama Mori Tower (アークヒルズ仙石山森タワー) is a 206.7 m (678 ft) mixed-use skyscraper in Roppongi, Minato ward, Tokyo. The building was designed by Irie Miyake Architects and Engineers and Pelli Clarke Pelli Architects, while the construction process was managed by Obayashi Corporation. In addition, it was developed by Mori Building Company. Construction of the tower started in 2009 and completed in 2012. It has 47 storeys.
The building is situated on 2 hectares (4.9 acres) land area near Ark Hills and close to the Kamiyachō Station on the Tokyo Metro Hibiya Line, and Roppongi-itchōme Station on the Tokyo Metro Namboku Line. It is also surrounded by gardens that were designed to replicate the natural wildlife in Tokyo.
The building was designed to withstand earthquakes and strong winds by using two different types of mass dampers. The first damper type is the viscous vibration damping walls (the "sticky wall") that was designed to sustain small- and medium-size earthquakes,while the second damper type is the brake damper that was designed to sustain major earthquakes.
The primary functions of the building are distinguished by its facade. The retail and commercial uses of the building, which are located on floors 1-2, are represented by the glass and stone facade with the squared-shape building corners; the apartments, which are located on floors 3-24, are distinguished by its balconies with the rounded-shape building corners; while the offices, which are located on floors 25-47, are covered by the glass with the building corners are subtly stepped back, forming the cone-like shape on the upper parts of the building.
Roppongi (六本木) is a district of Minato, Tokyo, Japan, famous for the affluent Roppongi Hills development area and popular night club scene. A few foreign embassies are located near Roppongi, and the night life is popular with locals and foreigners alike. It is in the central part of Tokyo, south of Akasaka and north of Azabu.
Roppongi Hills is a development project in Tokyo and one of Japan's largest integrated property developments, located in the Roppongi district of Minato, Tokyo.
A tuned mass damper (TMD), also known as a harmonic absorber or seismic damper, is a device mounted in structures to reduce the amplitude of mechanical vibrations. It consists of a mass that is mounted on one or more damped springs. The oscillation frequency of the mass is tuned to be similar to the resonant frequency of the object they are mounted to. Tuned mass dampers are used to reduce the maximum amplitude of the object while weighing very much less than it.
Minato is a special ward in Tokyo, Japan. It is also called Minato City in English.
Minoru Mori was considered to be one of Japan's most powerful and influential building tycoons. He joined his father, Taikichiro's, real estate business after graduating from Tokyo University and was president and CEO of Mori Building, of which he and his older brother Kei's families owned 100%. He owned 12.74% of Sunwood Corporation.
Obayashi Corporation is one of five major Japanese construction companies along with Shimizu Corporation, Takenaka Corporation, Kajima Corporation, and Taisei Corporation. It is listed on the Tokyo Stock Exchange and is one of the Nikkei 225 corporations. Its headquarters are in Minato, Tokyo. In 2018, Obayashi was ranked 15th place on ENR's list of Top 250 Global Contractors, the highest rank among Japanese Contractors.
Roppongi Hills Mori Tower is a 54-story mixed-use skyscraper in Roppongi, Minato, Tokyo. Completed in 2003 and named after builder Minoru Mori, it is the centerpiece of the Roppongi Hills urban development. It is the sixth-tallest building in Tokyo at 238 meters (781 ft). The tower has a floor space area of 379,408 square meters, making it one of the largest buildings in the world by this measure.
Earthquake engineering is an interdisciplinary branch of engineering that designs and analyzes structures, such as buildings and bridges, with earthquakes in mind. Its overall goal is to make such structures more resistant to earthquakes. An earthquake engineer aims to construct structures that will not be damaged in minor shaking and will avoid serious damage or collapse in a major earthquake. Earthquake engineering is the scientific field concerned with protecting society, the natural environment, and the man-made environment from earthquakes by limiting the seismic risk to socio-economically acceptable levels. Traditionally, it has been narrowly defined as the study of the behavior of structures and geo-structures subject to seismic loading; it is considered as a subset of structural engineering, geotechnical engineering, mechanical engineering, chemical engineering, applied physics, etc. However, the tremendous costs experienced in recent earthquakes have led to an expansion of its scope to encompass disciplines from the wider field of civil engineering, mechanical engineering, nuclear engineering, and from the social sciences, especially sociology, political science, economics, and finance.
Tokyo Skytree is a broadcasting and observation tower in Sumida, Tokyo. It became the tallest structure in Japan in 2010 and reached its full height of 634 meters (2,080 ft) in March 2011, making it the tallest tower in the world, displacing the Canton Tower, and the second tallest structure in the world after the Burj Khalifa (829.8 m/2,722 ft).
Ark Hills is a major office development by Mori Building Company in Minato, Tokyo. Completed in 1986, the complex includes the ANA InterContinental Tokyo Hotel, the ARK Mori Building, the world-class Suntory Hall concert hall, a TV studio and several apartment buildings. TV Asahi still uses its former headquarters as an annexe for some of its departments and subsidiaries; the network's headquarters themselves were moved nearby building designed by Fumihiko Maki in 2003. Every September the area celebrates with an autumn festival that includes music, dancing, food, art, and shopping.
Atago Green Hills is an urban complex, located in Atago, Minato-ku in central Tokyo between the Kamiyacho and Onarimon subway stations. Constructed by building tycoon Minoru Mori, the complex incorporates offices, residences, shops, gardens, temples and museum.
Motoko Ishii is a Japanese lighting designer. From 1965 to 1967 she worked at lighting-design offices in Finland and Germany. Returning to Japan in 1968, she established the Ishii Motoko Design Office.
Midtown Tower is a mixed-use skyscraper in Akasaka, Minato, Tokyo. Completed in 2007, it is the tallest of the six buildings within the Tokyo Midtown complex, at 248.1 meters (814 ft), and was the tallest office building in Tokyo until 2014.
The Shinjuku Center Building is a skyscraper in the Nishi-Shinjuku business district in Shinjuku, Tokyo, Japan. It has a height of 223 metres and 54 floors. The building opened on October 31, 1979 and was fully renovated in 1998. It serves as the headquarters of the Taisei Corporation. The Shinjuku Center Building serves as a workplace for 10,000 people, and is visited by over 25,000 people daily.
The Nittele Tower is a structural expressionist office building located in Minato, Tokyo, Japan. It houses the headquarters of Nippon Television. The 32-storey building has a height of 192 metres. Construction was finished in 2003.
Mori Building Company, Limited is a Japanese family-owned property management firm. As of 2015 its president and CEO is Shingo Tsuji. Its headquarters are in the Roppongi Hills Mori Tower in Roppongi, Minato, Tokyo.
The Sumitomo Fudosan Roppongi Grand Tower (住友不動産六本木グランドタワー) is a 231 m commercial skyscraper located in Roppongi, Minato ward, Tokyo.
The Toronamon-Azabudai District is a complex of three skyscrapers under construction in Tokyo, Japan. Upon completion, the complex will contain the tallest building in Tokyo and in Japan. Construction of the complex began in 2019, and is expected to be completed in 2023. The complex, designed by the architectural firm Pelli Clarke Pelli Architects, is being developed by the Mori Building Company. It is estimated that the project will cost about 580 billion yen.