This was the first in a series of paper tube constructions. Manufactured as form work for circular concrete columns, the tubes are used structurally here. Forty-eight of these tubes (325mm in diameter, 15mm thick and 4m high) are treated with paraffin water-proofing and fitted onto a precast concrete base in a circle. These were stiffened with a glue compound and joined at their heads by a wooden compression ring. The roof consisted of tenting fabric hung from tension wire arranged in a spoke-like configuration. After the structure was dismantled, the strength of the paper tubes was analyzed. Despite being subject to six months of wind and rain, the hardening of the glue and moderate exposure to ultraviolet rays actually resulted in increasing the compressive strength of the tubes.

最近身近に体験することができなくなった水琴窟を博覧会会場の東屋として計画している。防水された紙管48本をPCベース上に差しこみ円形に並べ、上端をリングにより一体化している。紙管と紙管のすき間からは風が通り、何本もの光の帯が室内へと舞い込み、また夜には東屋自体が48本の光の帯を持つ照明器具と化す。