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(a) The maximum vertical rise of a flight between floors, between landings or between a floor and a landing shall not exceed nine feet in assembly units nor 12 feet in all other occupancies.
(b) The length of a landing in the direction of travel shall be not less than the width of the stairs, but need not exceed four feet in a stair of any width.
(c) Except in single-family and two-family dwellings, no flight shall have less than two risers.
(Prior code § 67-10.2)