The top of the handrail should be at least 34 inches.
Stair railing width.
On ramps the clear width between handrails shall be 36 inches 914 mm minimum.
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.
Minimum 6 8 headroom height clearance for stairway.
Minimum 36 inch clear width for stairway.
Ensuring you have the correct dimensions is the first step in properly specifying any railing system.
Maximum 12 3 vertical height rise for a flight of stairs.
Definition of stairway width or stair width don t confuse stair width with stair depth stair tread width green arrow smaller than stairway width due to side trim boards stairway width blue arrow over most of this stairway nominally 36 or wider stairway width near stair top pink arrow.
Projections into the required width of stairways and ramps at each handrail shall not exceed 4 5 inches 114 mm at or below the handrail height.
Therefore let us recap on the residential stair code requirements.
Each set of stairs is unique.
Guard railing minimum height.
Whether you are purchasing individual components or an entire railing system there are a few measurements that are needed to ensure the railing purchased is a proper fit.
Ibc 1012 8 b intermediate handrails.
The guard may project into the required width below the handrail but not above it.
The 31 1 2 inch minimum distance provides a full 4 1 2 inches more width than the double railing minimum.
Maximum 4 1 2 inch handrail projection into stairway width on either side.