Abstract
This paper is one of works in which I intend to clarify the town planning methods of Japanese castle towns. In this paper, I study on the layout of covered water works in castle towns. The summary is as follows: The layout of covered water works in castle towns was completed in the mid of seventeenth century as one of the town facilities serviceable directly to the daily living mainly for the purpose of supplying drinking-water. The castle towns adopting water works with covered duct mostly faced to sea, and did not adopt the general lay out of castle towns with open water works, which put the zone of Samurai-class higher than that of artisans and tradesmen in land height depend on the federal status systemn. For this reason, the deffential of status less effected to the plot planning of residential zones, and the difficulty of getting water gave the priority to the zone for construction of covered water works.
