![]() ![]() ![]() (e) Single cleat ladders shall not exceed 30 feet in length between supports (base and top landing). (d) Double cleat ladders shall not exceed 24 feet in length. The clear space in the plane of the cleats between the top of any cleat and an obstruction above shall be at least 4 1/2 inches.ĮXCEPTION: The cleat of ladders used only by hod carriers and plaster tenders shall be uniformly spaced within 1/4-inch tolerance at not more than 9 inches measured from the tops of cleats. Cleats shall be uniformly spaced within 1/4-inch tolerance, and not farther apart than 12 inches measured from the tops of cleats. Knots appearing in the wide faces of cleats shall not exceed a diameter of 1/4-inch. (c) Cleats of wood shall be clear, straight-grained and absolutely free from knots of any size that appear in the narrow face. If splicing of side rails is necessary to attain the required length, the splice shall develop the full strength of a continuous side rail of the same length. (b) Side rails, when of wood, shall be the equivalent of dressed Douglas fir "selected lumber", free from sharp edges and splinters, and shall not have knots, except for an occasional one less than 1/2-inch in diameter that appears only on the wide face and is at least 1/2-inch back from either edge. NOTE: Cleats for job-made ladders are defined as crosspieces used by a person in ascending or descending a ladder. If a ladder is to provide the only means of access or exit from a working area for 25 or more employees, or simultaneous two-way traffic is expected, a double cleat ladder shall be installed. (a) Job-made ladders shall be constructed for intended use. ![]()
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