Fudomae Apartment with Six Voids 公寓综合体 by Akira Koyama

Fudomae Apartment with Six Voids 公寓综合体 by Akira Koyama is a highly esteemed winner of the very prestigious 2021 A' Design Award 铜奖 in 建筑与结构设计 Competition Category.

铜建筑· 2021

Fudomae Apartment with Six Voids 公寓综合体

by Akira Koyama

Client: Key Operation Inc.

A' Design Award 铜奖 Winner in 建筑 Category

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The Design

About Fudomae Apartment with Six Voids 公寓综合体

不动前六井公寓是位于东京的一栋五层、共14户的公寓综合体。建筑坐落于一块进深大、临街面狭窄的地块上，纵深17米，宽8米。每个体量的四个角均作切削处理，形成六处垂直中庭（空井），将自然光引入各户单元。综合体由前后两个体量组成，中间以开放式走廊分隔，走廊设有通往各层的楼梯。走廊连通六处空井，同时成为自然通风的通道。临街立面为结构墙体，采用高压水刀凿面处理，以保护住户隐私。

The Recognition

About the A' Design Award 铜奖

Fudomae Apartment with Six Voids 公寓综合体是 A' Design Award 铜奖得主，这是授予以创造力、独创性和敏锐见长的杰出设计的极具声望的认可。铜奖得主是技艺娴熟、创意惊人的作品，印证了其设计师丰富的经验、想象力与机智。预计Fudomae Apartment with Six Voids 公寓综合体将成为一件备受推崇、令人钦佩且被珍爱的物品，兼具显著的专业性与创新性。这件赢得 A' Design Award 铜奖的设计融入艺术、科学、设计和技术领域的最佳实践，并因注重细节而出类拔萃。Fudomae Apartment with Six Voids 公寓综合体出色地满足需求，触动渴望，迷住情感，并吸引好奇心。

Behind the Design

Press Kit

Credits, team members and technical details provided by the designer.

Unique Properties: A five-storey apartment complex of 14 units was developed for a parcel along a small local commercial avenue in Tokyo. To develop a parcel relatively deep with tight frontage in central Tokyo, the main theme for drawing the plan focused on supply of daylight and airflow throughout, while retaining density and thus enhancing rents. In this regard, a void to meet the local ordinance requirement of an evacuation route and additional voids were established.
Dimensions & Packaging: The site is a deep parcel with tight frontage, it measures 17 m to the back, 8 m in width. Site area is 155.07m2, Building area is 113.17m2, and Total floor area is 527.68m2. The building consequently comprises two volumes, front and rear, separated by open corridors installed with stairs ascending to all floors for access to the flats.
Tags: Apartment, Window, Voids, Post Coronavirus, Rental Complex, Pet, Cat Owners
Production Technology: Extruded cement panels are used for the wall rising above the outdoor passage in order to reduce the load. The street façade also rises four storeys as structural wall with a water-jet chipped finish. This distinctive expression faces the street and provides robust privacy for sleeping quarters behind the wall. The windows of the street-side voids are effectively set back, while the wall roughened by water jet draws passers’-by attention to enhance window privacy.
Design Challenge: The building code in Japan establishes standards for the specific planar area of openings with respect to the floor space of a room. For residential complexes, the area for openings must be at least 1/7 of the floor space of each room. In relation to the area of a window opening, the distance from the window to adjacent building and the height from the top of the building have a large impact on the calculated effective opening area.
Research: The number of pet cats in Japan is nearing 10 million in 2020. Lifestyle changes brought upon by Covid-19 have increased the desire for comfort from pets.
Important themes based on our Covid-19 experience prompt us to consider inclusion of outdoor space. This flat complex establishes voids for a deep parcel with poor air passage to the back in order to secure natural ventilation.
Inspiration: The four corners of each volume are notched to establish six vertical voids that bring light down into each unit for a heartening indoor environment. For a plan such as this, surrounded by buildings on neighbouring property all around, the lower floors for the new building are often unable to secure effective openings to draw sufficient daylight. The notched corners of each volume establish voids in front of neighbouring property and enable window openings facing the voids to provide effective daylight access that meets building code.
Project Duration: The project is located in Meguro-ku, Tokyo, Japan. The project was started in July 2019, and finished in July 2020.
Operation Flow: A typical studio flat plots the kitchen space and unitized bathroom that require plumbing to the left and right of a central corridor opening up into a bedroom in the back. The studio flats in this complex, however, arrange their bath area towards the core of their volume and corridor along an exterior wall. The respective corridors internally connect the six voids as thoroughfares of natural ventilation.
Team Members: Architect: Akira Koyama + KEY OPERATION INC./ARCHITECTS
Planning & development: ASCOT CORP.
Structure Engineer: Delta Structural Consultants
Service Engineer: Comodo
Contractor: Nakajima Kenko
Image Credits: All Images: Yoshifumi Moriya / Nacasa & Partners Inc.
Video: Akira Koyama / Key Operation Inc.