Experimental Study on the Shape of a Historical Curvilinear-Oblique Weir

Abstract

The Kodo-Zeki that was constructed in Edo-era by Mr. Kenzan Nonaka is going to be replaced with a modern weir. A legend of “ito-nagashi” has been left because the old weir had a curvilinear-oblique shape. Such shape is quite unique among historical weirs. The aim of this study is to make clear the design concept of curvilinear-oblique weir througha hydraulic model experiment and to reevaluate the historical structures.