Charred Cedar House © Noriyuki Yano
Architects: Tetsuya Nakazono / naf architect & design
Location: Hiroshima, Japan
Engineer: Kenji Nawa / NAWAKENJI-M
Site area: 172.55 sqm
Building area: 61.38 sqm
Total floor area: 114.50 sqm
Project Year: 2009
Photographs: Noriyuki Yano / Nacasa & Partners
Charred Cedar House Front © Noriyuki Yano / Nacasa & Partners
CONCEPT
The construction site is located in a district where many traditional sake breweries preserve good old Japanese street with plaster and charred cedar walls. In winter, during sake brewing season, a cloud of steam comes out from red brick chimneys of the breweries and the scent of sake wafts in the air. “Charred Cedar House” stands in such neighborhood.
Charred Cedar House inside © Noriyuki Yano / Nacasa & Partners
STRUCTURE
Steel-frame structure was employed for first and second layers as application of slim materials is available by concentrating the stress. Third layer, on the other hand, employed wooden framework construction method which was developed from traditional Japanese method. Structure of the first and second layers is distinctive with employment of φ100㎜・φ140㎜ steel pipes for first layer andφ60㎜ steel pipes for second layer, all of which are oblique in different angles. In Japan, a seismic country, diameters of pillars tend to be large to resist the force of earthquake and installation of bearing walls with braces tends to be frequent practice.
Charred Cedar House detail © Noriyuki Yano / Nacasa & Partners
The framework is calculated on the assumption of resistance to enormous force of earthquake which does not exist in everyday life. However, pillars of extremely small diameter can resist vertical and horizontal load simultaneously when correctly tilted and positioned. When this formula is found, the space free from enormous force or conventional structure method floats in the air as natural as up above brunches of trees, making it almost earthquake proof. Pretty neat, huh?
Charred Cedar House first floor © Noriyuki Yano / Nacasa & Partners
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