BS 5395-2 is the second part of the BS 5395 multi-series for stairs, ladders and walkways.
BS 5395-2 gives recommendations for the design of helical and spiral stairs, to be used internally or externally in all types of building constructions.
BS 5395-2 covers only stairs that are circular on plan and does not deal with ramps.
BS 5395-2 on stairs, ladders and walkways is useful for:
Helical and spiral stairs are more complicated in designing and construction terms as compared to normal stairs. Their geometry requires different dimensions and materials to construct a safe and efficient staircase.
BS 5395-2 lists materials that can be used for constructing helical and spiral stairs and provides a reference to standards that will help you meet these materials’ requirements. BS 5395-2 also provides dimensions for various types of spiral and helical stairs to ensure that these stairs have no deviations or inaccuracies in the size of their steps and railings. BS 5395-2 also helps you design stairs that are able to resist fire hazards and do not hinder the crowd’s evacuation in the event of a fire hazard.
Overall, the guidelines of BS 5395-2 help you to design helical and spiral stairs that are structurally sound and meet the performance and safety requirements.