(1) The water depth at the shallow end of the swimming pool shall not exceed 3½ feet.
(2) If steps extend for more than ½ the width of the shallow end the depth of the wall at the base of the lowest step shall not be greater than 3½ feet.
(3) From the shallow end, the bottom of the pool shall be sloped at a rate not exceeding—
(a) for pools more than 20 feet wide, 1 foot vertical in 12 feet horizontal; and
(b) for pools 20 feet or less in width, 1 foot vertical in 10 feet horizontal.
(4) A pool sloped in accordance with subregulation (3) shall extend to a depth of not less than 5 feet except that when rope and buoys are provided, the slope shall extend to a depth of not less than 4½ feet.