1926.1053 - Ladders. - Occupational Safety and Health Administration
The rung spacing on the extension section of the extension trestle ladder shall be not less than 6 inches (15 cm) nor more than 12 inches (31 cm), as measured between center lines of the rungs, cleats, and steps. ... Where the total length of a climb equals or exceeds 24 feet (7.3 m), fixed ladders shall be equipped with one of the following ...
DA: 59 PA: 57 MOZ Rank: 65