When a ladder is in use, how must its rungs and steps be positioned?

For a ladder to be safe and effective during use, its rungs and steps must be positioned in a manner that is parallel, level, and uniform. This configuration ensures that individuals using the ladder can maintain stable footing and balance while ascending or descending. Properly aligned rungs allow users to place their feet securely, reducing the risk of slips and falls.

When the rungs are uniform in spacing and level, they create a predictable climbing experience that is important for safety. An uneven or random configuration could lead to missteps, and improper angling would compromise stability. Curved rungs or adjustable configurations would not only be unconventional but could also pose different hazards related to supporting body weight and maintaining grip. This adherence to safety standards is fundamental in ladder design and use to prevent accidents and ensure that users can focus on their task rather than worrying about potential instability.