Abstract: An in-ground swimming pool having a plurality of panels; the vertical edges of each adjacent panel seized between a front wall-joint and rear back-up joint having a rearwardly extending U-shaped channel to receive one side edge of a triangular brace; another U-shaped channel to receive the other side edge of the triangular brace; another U-shaped channel at the top of each panel to receive the edge of a deck member; a double channel having a regular position attached at the top of the panels to receive the outer edge of a horizontal deck; another double channel having a regular channel, receiving the bottom of each panel, and offset channels on each double channel receiving an outer edge of the deck; each offset channel having a brace attached at each end in the offset channels.