The year of 2019 should also become an important for me because the new National Stadium of Japan is scheduled to be completed at the end of November this year. We are currently doing a final confirmation of the details inside and outside the stadium.
This large stadium was designed as a collection of small-diameter pieces of wood. The facade consists of overlapping multi-layered eaves. The areas under the respective eaves are covered with small-diameter wood louvers in an attempt to express the tradition of beautiful eaves in Japanese architecture in an appropriate contemporary manner. Square cedar lumber measuring 105mm which is the most common size in Japan was split into three pieces to be used as the louvers, and the pitch of each louver was adjusted in a number of directions as a means to control the volume of wind channeled into the stadium.
The roof has a truss structure created by combining steel beams and laminated lumber with a medium cross-section, utilizing the axial stiffness of wood to minimize deformation of the roof trusses due to wind or earthquakes.