JIS S 1121:2013 PDF Download

The specifications for ladders and stepladders made of aluminum alloy are laid out in JIS S 1121:2013. It covers stepladders and ladders used for common purposes but excludes some particular items. These include stepladders with two or more folding mechanisms used exclusively or in combination; stepladders with three or more folding mechanisms for scaffolding; tripod stepladders with adjustable front side rails and a rear leg that allows stepping on and swinging laterally; and finally, stepladders and ladders made of plastic for their structural parts like side rails, rungs, and platforms.

This standard assures that the design, construction, safety, and performance characteristics of aluminum ladders and stepladders meet the stated requirements. The usage of these items in a variety of applications is made safe and dependable thanks to compliance with this standard. To encourage safety and effectiveness in the use of aluminum ladders and stepladders, it is crucial for producers and users to abide by the specifications established in this standard.