This British Standard specifies requirements for materials, details of construction and performance for portable aluminium ladders, steps, trestles and stagings of the following types:
single-section ladders, including shelf ladders;
extending ladders;
standing step ladders, including swing back steps, folding platform steps and ladder backed steps;
folding trestles;
lightweight stagings;
combination ladders.
This standard does not apply to ladders for special professional use such as fire brigade ladders, or to mobile ladders which require mechanical aids for erection.