1 Scope
This Part of BS 585 specifies materials and construction requirements for stairs constructed of timber,
which may include plywood risers and treads and/or edge-to-edge jointed timber and/or
glue-laminated wood components. It applies to stairs intended primarily for use inside
one-family dwellings, including one or more of the following:
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a) straight flights;
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b) winder flights;
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c) quarter landings;
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d) half landings.
This Part of BS 585 does not apply to stairs with open risers, stairs having an overall width greater
than 1 220 mm, or stairs having a total going in one flight exceeding 3 800 mm.
Appendix A gives recommendations for site fixing of stairs.
Appendix B gives recommendations for the design of stairs with winder flights.
NOTE 1 For stairs constructed of wood-based materials, see BS 585‑2.
NOTE 2 For guidance on the design of straight stairs, see BS 5395‑1.
NOTE 3 The titles of the publications referred to in this standard are listed on the inside back cover.