Yatsugatake Villa 別墅 by Kiyotoshi Mori and Natsuko Kawamura

Yatsugatake Villa 別墅 by Kiyotoshi Mori and Natsuko Kawamura is a highly esteemed winner of the very prestigious 2022 A' Design Award 铜奖 in 建筑与结构设计 Competition Category.

铜建筑· 2022

Yatsugatake Villa 別墅

by Kiyotoshi Mori and Natsuko Kawamura

Client: MDS Co., Ltd.

A' Design Award 铜奖 Winner in 建筑 Category

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The Design

About Yatsugatake Villa 別墅

八岳别墅是位于日本山梨县北杜市的一处避暑住宅。建筑由三个梯形筒体呈扇形排布构成，向南敞开。宽阔的南向开口在寒冷冬季引入充足阳光，而出挑的屋檐与侧墙则遮挡夏日强烈的日照。南北两侧的窗户让微风穿堂而过。建筑采用日本传统木构工艺，以杉木、灰泥与障子（纸障门）为主要材料。障子闭合时透出柔和的光线，开启时则将四周的山峦景致框入画中。

The Recognition

About the A' Design Award 铜奖

Yatsugatake Villa 別墅是 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Yatsugatake Villa 別墅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。Yatsugatake Villa 別墅出色地满足需求，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: 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