Requirements for deck stairs the code has some very specific requirements for deck stairs.
Interior balcony railing height code.
The height is measured vertically above the walking surface or the line that connects the nosing of a set of stairs.
If your local laws follow the international residential code then balconies in your area that are 30 inches or more above the surrounding floor must have guardrails.
Treads must be at least 10 inches deep measuring from front to back.
Install railings on any deck that is 30 inches or more from the surrounding surface and on at least one side of a stairway leading to the deck.
Railing systems require regular inspection to ensure they are secure.
Even if your balcony has additional supports potentially categorizing it as a porch or deck it must have guardrails based on the same 30 inch rule.
Residential properties typically require a railing of 36 inches while commercial properties should have railings between 42 and 48 inches.
The top of the handrail should be at least 34 inches.
The height of the railing is also specified by city building code.