Japan’s First All-Wooden 3-Storey School Building in Toyama
Demand for non-residential wooden buildings has shown significant growth in Japan over the past several years. This trend is apparent with educational facilities. For example, in Uozu City, Toyama Prefecture, a new wooden school building project commenced in December 2015. The proposal committee reached the conclusion that the building should be an all-wood building. This milestone means that the school will be the first 3-storey all-wooden school building in Japan. The total floor area of this building is 4,950.09 m2, exceeding 3,000 m2, where encapsulation of wooden members with gypsum boards is required. However, it was a strong desire for the City Education Board to visually expose the structural members so that the pupils can appreciate the wooden texture.
The architect found the solution by compartmentalizing the building into two zones that are less than 3,000 m2. On January 31st, COFI had a chance to visit the building site with the tour members of Japan Wooden Building Association. The school opened in April 2019.
School Name: Hoshinomori Elementary School Total Floor Area: 4,950.09 sqm
Building Area: 2,956.81 sqm
Total Cost: JPY1,800,000,000 (CAD 21.72 million) Unit Cost: JPY360,000/m2 (CAD 4344/sqm) (approx. 110% of that of reinforced concrete) Number of pupils: 280