Stairs Standard Size


  • Headroom-6’8” min.
  • Tread size-10” min.
  • Rise-7 3/4” max.
  • Railing height-34”-38”
  • Railing gap-6” max.
  • Nosing- 1/4”- 3/4”
  • Step length-36” min
  • Railing placement-4 1/2” max.
  • Max. number of steps-12
(The size of tread and rise should be proportional, so that the sum of 2 rise and 1 tread, minus nosing, will be more than 24” and no more than 25”.)


This article is created based on materials published on this website.

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