Yatsugatake Villa 别墅 by Kiyotoshi Mori and Natsuko Kawamura

Yatsugatake Villa 别墅 by Kiyotoshi Mori and Natsuko Kawamura is a highly esteemed winner of the very prestigious 2022 A' Design Award 銅獎 in 建築、樓宇及結構設計 Competition Category.

銅建築· 2022

Yatsugatake Villa 别墅

by Kiyotoshi Mori and Natsuko Kawamura

Client: MDS Co., Ltd.

A' Design Award 銅獎 Winner in 建築 Category

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The Design

About Yatsugatake Villa 别墅

八岳别墅係一座位於日本山梨縣北杜市嘅避暑別墅。建築由三個梯形筒狀空間以扇形排列而成，向南展開。寬闊嘅南面開口喺寒冷嘅冬季引入陽光，而伸延嘅屋頂同側牆則喺夏季阻擋猛烈嘅陽光。南北兩側嘅窗戶令微風得以穿透室內空間。建築採用傳統日式木構工法，運用杉木、灰泥同障子拉門。合上嘅障子拉門帶來柔和光線，打開時則將周遭嘅山景盡收框中。

The Recognition

About the A' Design Award 銅獎

Yatsugatake Villa 别墅是 A' Design Award 銅獎得主，這是授予以創造力、獨創性和敏銳見長的傑出設計的極具聲望的認可。銅獎得主是技藝嫻熟、創意驚人的作品，印證了其設計師豐富的經驗、想像力與機智。預計Yatsugatake Villa 别墅將成為一件備受推崇、令人欽佩且被珍愛的物品，兼具顯著的專業性與創新性。這件贏得 A' Design Award 銅獎的設計融入藝術、科學、設計和技術領域的最佳實踐，並因注重細節而出類拔萃。Yatsugatake Villa 别墅出色地滿足需求，觸動渴望，迷住情感，並吸引好奇心。

Behind the Design

Press Kit

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

Unique Properties: The exterior is characterized by three modern trapezoid tubes, deforming the traditional Japanese space under deep eaves to frame the landscape in four directions. The form was derived from meticulous calculation of precipitation, the sun's movement in summer and winter, and the thermal environment. Shoji paper screens offer a space filled with soft light iconic of Japanese culture when closed, and switch to the majestic scenery framed by the walls when opened, providing two alternating scenes.
Dimensions & Packaging: Site Area 691.00m2
Total Floor Area 110.01 m2 (1F 71.65 m2, 2F 38.36 m2)
W17,400mm x D12,300mm x H6,139mm
Tags: Villa, Sun light, Wind, Fan-shape, Wooden, Mountain, Three adjacent shells, Sho-ji, Eaves, Farming
Production Technology: Contrary to the contemporary style guided by precipitation, sun rays and the surrounding environment, the construction of the house incorporates traditional Japanese wooden construction methods, with earthquake-resistant walls and large openings. Traditional Japanese techniques and components are used throughout, including plastering on the curved openings and fittings such as shoji and ranma (partition with ventilation and daylighting functions), creating a vernacular architecture.
Design Challenge: In Japan, especially in rural areas, the number of carpenters capable of building elaborate wooden houses is decreasing, and it was difficult to find a builder who could construct a building with a unique (challenging) design. In spite of the modern design, Japanese cedar and plastering materials are used, and shoji screens as well as other traditional materials handed down from generation to generation are fit in by the indigenous module method, enabling the definition of a Japanese space.
Research: Three trapezoid tubes with north-south openings sit wide open towards the south to maximize winter daylight. Glass surfaces are set back from the roof edge to avoid direct south sun rays in summer. Side walls are arranged to block the west sun. The footprint is set back from the roof edge, partly to reduce soil excavation (deep foundation below the frost line is required), creating a sitting area free from rain dripping from the roof. It is a modern version of traditional Japanese engawa space.
Inspiration: With exterior walls arranged to resemble a fan, the house provides framing for the landscape, maximizing the location on a plateau surrounded by fields and trees with panoramic view of mountain ranges in the distance. It is a summer resort, slightly cooler than humid summers in Tokyo, and yet the sun rays are strong and the winters are cold. The roof was extended to block direct sunlight in the summer and side walls to keep the western sun out, resulting in a series of tubular forms.
Project Duration: The project was completed in Hokuto-City, Yamanashi, Japan in 2012
Operation Flow: Considering the cold winter, the building is built in a fan shape, open to the south, in order to maximize the sunlight while the sun moves. On the other hand, in summer, the roofs and walls of the trapezoid tubes block the strong sun rays, creating shadows inside, and windows at the north and south let the breeze through to cool the airy space. The layout, guided by the thermal environment, provides various interior scenes of varying depths as seen through the openings that connect the spaces.
Team Members: Kiyotoshi Mori
Natsuko Kawamura
Image Credits: Photography: Toshiyuki Yano