To facilitate the execution of the works of assembling a wall face without requiring a skilled engineer in particular by forming the wall face with a square panel having junctions on both side edges and a connection section on one face and a connecting member having connection sections coupled with the connection sections of the panel at both ends.

A panel 1 is a square, thick and flat plate. A protruded junction 3 is formed over the whole length on the lower edge section of the panel 1, and a recessed junction 4 tightly couplable with the protruded junction 3 is formed over the whole length on the upper edge section of the panel 1. A connection section 5 having a pair of hook sections faced to each other is formed on one face of the panel 1. A rod-like connecting member 2 has a proper cross sectional shape, and protruded connection sections 6 tightly coupled with the connection section 5 of the panel 1 are formed at both ends. When the panels 1 are connected together in sequence, a long wall face can be constructed, thus the wall face can be easily assembled without requiring a skilled engineer.