WOODEN FLOOR MATERIAL AND FLOOR STRUCTURE

摘要

PROBLEM TO BE SOLVED: To provide a wooden floor material with a clearance not distinguishable between the floor materials even if they are expanded or shrunk due to a humidity change and to provide a floor structure using the wooden floor material. SOLUTION: This wooden floor material has a tongue or a groove for actual joining on end faces to be connected, and a tongue upper end face and a groove upper end face are inclined in the same directions. COPYRIGHT: (C)2004,JPO