Mariposa County, CA Home of Yosemite

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Stair Details
The stair detail should show / describe, as a minimum, the following items:
  • Headroom clearance: 6’8" minimum.
  • Rise and run: 7 3/4" rise, maximum, 10" run, minimum, maximum variation in a flight of stairs in the rise or run is 3/8" for residential. Commercial use is a 7" rise and 11" run.
  •  Handrails: 30" to 34" measured from the nosing of the tread.
  • Guardrails: 42" minimum height with an intermediate pattern such that a sphere 4" in diameter cannot pass through for residential. Commercial use: 42" min height.
  • Decking, joists, stair treads, risers, runs, landings, etc. that are within 10' of the primary structure shall be built from fire resistive material.

Stair Handout

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PO Box 784 | 5100 Bullion St. | Mariposa, CA 95338