9-5-7: CONSTRUCTION MATERIALS:
Swimming pool walls and floors shall be constructed of any impervious material which will provide a tight tank with white or light colored finish and easily cleaned surfaces. The floor or bottom surface of the pool shall have a nonslip finish as smooth as possible. The side and end walls of a pool shall present a smooth finish and shall be vertical to a depth of at least six feet (6') or shall have a slope or curvature meeting one of the following conditions:
   A.   The pool walls may be vertical for thirty inches (30") from the water level, below which the wall may be curved to the bottom with a radius at any point equal to the difference between the depth at that point and thirty inches (30").
   B.   To a depth of six feet (6'), except as in subsection A of this section, the wall's slope shall not be less than one foot (1') horizontal in six feet (6') vertical. (1997 Code)