Falls from portable ladders step, straight, combination and extension are one of the leading causes of occupational fatalities and injuries..Occupational Health and Safety Code Explanation Guide Part Entrances, Walkways, Stairways and Standards for portable ladders. .What are portable ladders? What should you know about portable ladders before using them? What should you do before using a portable ladder?.Rungs, cleats and steps of portable and fixed ladders except as provided below must not beed less than inches cm apart, not more.
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