Record of Study of Wind for Construction of a Transmission Line Crossing the Naruto Straits in 1950s

Abstract

Once there was a long span of transmission line crossing the Naruto straits. The transmission line was planed to build in 1950s. An intensive study of wind in the area was made and the design wind speed over the straits was established. The transmission line was built in 1961 and used until 1985. At that time when the line was built, the span of line was the longest in Japan. Throughout the history of wind engineering in Japan the study was the first attempt to establish the design wind speed for large-scale structures such as transmission lines. An outline of this historical study has been shown.