7. (1) Stairs shall not project into the pool.
(2) The dimension of steps shall be uniform and the product of the rise and run in millimetres shall be not less than 45,000 and no more than 48,500. Risers shall have a maximum rise of 200 mm and a minimum rise of 125 mm. Treads shall have a minimum run of 230 mm exclusive of nosing.
(3) The nosing of the step shall be marked with a contrasting colour.
(4) The surface of steps shall be equipped with a non-slip covering.