riser height

[ICE]

This is the first year that my AHJ has adopted the IRC{2009 edition}. We stopped short of including the el., pl., me., sections.

My question is the lack of a minimum stair riser height. When was the minimum height removed or was it never in the IRC? It's of little consequence, I'm just curious.

 

[mark handler]

Going back to the 2000 IRC, there is no minimum. IMHO anything less than 4 inches is a trip hazard.

 

[fatboy]

Mark is correct, never made it into the IRC, and I concur, anything less than 4" would be a hazard, but not a code violation.

 

[ICE]

Mark is correct, never made it into the IRC, and I concur, anything less than 4" would be a hazard, but not a code violation.

Ya, I can see some shortcomings. When I take in the stair section I can see that plenty of time went into creating it. There is a whole section on nosing's. On the bright side, the powers of code officials have expanded and we can now classify a floor as a stairway with 0" risers.