EXTERNAL WALL PANEL AND WINDOW STRUCTURE IN EXTERNAL WALL

PROBLEM TO BE SOLVED: To provide an external wall panel which has sufficient strength and proof stress imparted thereto, and exerts high workability that allows cutting of a width thereof depending on each section of a building, and also to provide a window structure in an external wall, which imparts an appearance of high design value to the building by designing the building so as to have stateliness and a sense of greater depth. SOLUTION: The external wall panel has a design layer 2 formed on an outside surface, and a substrate layer 3 arranged inside the design layer 2. The substrate layer 3 has a thickness that can accommodate a fastening frame therein. Then hollow portions 32 are formed in the substrate layer 3 such that a plurality of repeating units 30 each consisting of the three hollow portions are sequentially aligned in a width direction, and that an interval between the mutually adjacent hollow portions 32, 32 at every repeating unit 30, is expanded. The repeating unit has a width W, and a width value corresponding to an integer multiple value of the width W almost conforms to a building module. COPYRIGHT: (C)2008,JPO&INPIT