It is a tunnel space like a hole in the ground, with a large opening to the south, through which the wind blows in and out from the north. The rooftop is greened to connect with the lush greenery of the surrounding area, and the curved RC slab is supported by six 500 x 750 mm square columns. The slump value of the concrete is 8cm, and it is intended to remain in this place for a long time.

Japan | Okinawa

Jutakutokushu December 2012 issue 166P