20. A pool may be constructed with a slope towards the centre from the deck and such pool is not governed by sections 3 to 19 provided:
(a) that the bottom is covered with a rigid white or pastel finish;
(b) that the maximum slope of the bottom is 300 mm vertically in 3.6 m horizontally;
(c) that the depth of the water does not exceed 1.8 m;
(d) that the entire pool is surrounded by a deck that is at least 3 m wide;
(e) that the bottom is marked on the length with a broken black line 300 mm wide;
(f) that control stations are available in accordance with paragraph a of section 19, spaced at intervals not exceeding 60 m along the perimeter of the pool. If the width or the diameter of the pool exceeds 36 m, these stations shall be placed in the central parts of the pool; and
(g) that there is no diving platform or spring board.