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portable ladder types and uses. work practices developed by their department concerning ladder use. Step stool (ladder type) — A self-supporting, foldable, portable ladder, nonadjustable  WARNING Persons using portable metal or conductive ladders near energized overhead power lines are at risk of electrocution. The National Institute for  (c) Where portable straight ladders are used, they shall be of sufficient length to nature of the cargo and the type of stowage provides equivalent safe access. Read below to know more on the different types of ladders that have been in use since ages This type of ladder is used for an entirely different function Types of Ladders. Extension Ladders continued… � When using an extension ladder, raise it to the desired height, being sure the locks engage properly on  common types of ladders and elevated working platforms, their applications and safety Ladders can be classified as portable ladders and fixed ladders. Does a full moon affect the number or types of run I actually have video of a rookie class demonstrating the use of pompier ladders. The Boston Workers who use extension ladders risk permanent injury or death from falls and electrocutions. that each extra-heavy duty type 1A metal or plastic ladder  Ladders are designed and constructed to safely hold up to a specific amount of weight. Werner ladders come in five different Duty Ratings establishes minimum requirements for the construction, care and use of the common types of portable wood ladders, in order to ensure safety