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    四世住宅/tomomi kito architect & associates

    建筑 室內

    感謝來自tomomi kito architect & associates的分享



    設計師:Tomomi Kito, tomomi kito architect & associates?(http://tomomikito.com/index.html)

    Project: Renovation of the existing two-story timber structure house

    Location: Tokyo, Japan

    Architect: Tomomi Kito, tomomi kito architect & associates (http://tomomikito.com/index.html)


    This is an interior renovation project of an existing two-story timber structure house in Tokyo built approximately 40 years ago.?The client is a young couple, and the wife’s parents were living there before the renovation. The client decided to live with their parents in this house. Soon after, the wife’s grandmother who lives alone in the countryside – far from Tokyo – also decided to live together in this house.


    As such, the client requested to renovate the house suitable for accommodating 4 generations – the grandmother (1st generation), parents (2nd generation), the client (3rd generation), the client’s son (4th generation).?While the daily behaviour patterns of the each family member is different, creating a space to promote connection between all generations living under one roof became a major focus.


    Moreover, we found the existing rooms were split into smaller functions and as such, they were not open to the outside environment nor to each other, leading to poor daylight and natural ventilation.?Having these issues in mind, we decided that improving the quality of the space, daylighting and ventilation were also essential to the renovation.

    首先,我們仔細研究了私人房間的布置,以充分利用現有的窗戶,以此最大限度地發揮自然采光和通風的優勢。 其余空間被指定為“共享空間”; 所有家庭成員都可以使用空間,并在每層樓都設有公用設施。

    Firstly, we carefully studied the arrangement of the private rooms to take full advantage of existing windows thus maximizing natural daylight and ventilation. The remaining spaces were designated as “shared space”; spaces open to all family members and planned in each floor with utilities.

    私人房間也可以在成員之間交換使用,以增強世代之間的溝通交流,就如同是分享生活方式。 共享空間中的“共享”性質在與外界的連接中被有意識地加強了,比如將入口空間直接連接到“共享空間”以及在“共享空間”中安裝一個大窗口。

    The private rooms are also exchangeable among the members so as to enhance communication between generations; similar to a share-house lifestyle. The nature of “share” in the shared spaces was consciously enhanced by making the connection with the outside, such as directly connecting the entrance space to the “shared space” and installing a large window in the “shared space”.


    At the same time, we also reviewed the existing structure. Although the columns were densely arranged in accordance with the existing partitions, we found that the existing house was structurally unbalanced and lacked the necessary structural resistance.


    As such, we decided to add reinforcements through supporting beams and structural plywood whilst optimizing the use of its existing structural components.


    As a result of such studies, some columns were deemed redundant and thus removable (total 20 columns were removed), providing an opportunity to create open spaces free of columns.


    The ceiling of the shared space on the second floor is catenary shaped – enhancing a natural connection to the outside and maximizing the diffusion of the natural lighting into the space.


    The catenary-shaped ceiling gently envelopes all 4 generations of families who ultimately enjoy living in a space abundant of natural lighting and ventilation.


    技術顧問:Yutaka Misawa

    燈光顧問:Kanae Hagiwara


    照片版權:satoshi shigeta (所有字母小寫)

    圖名:tomomi kito architect & associates

    Structural designer: Building Structure Institute

    Technical advisor: Yutaka Misawa

    Lighting advisor: Kanae Hagiwara

    Completion: April 2017

    Photo credit: satoshi shigeta (all small letters)

    Drawing credit: tomomi kito architect & associates