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Handrail extentions IBC 2003 for Industrial?

Handrail extentions IBC 2003 for Industrial?

Handrail extentions IBC 2003 for Industrial?

Hey brothers and sisters,

I have a question regarding the Handrail extentions called out in the IBC 2003 1009.11.5
I'm a structural engineer working for the contactor in this case, and the Design Engineer is insisting on these 2 ft handrail extentions in an purely Industrial building.  These extentions are not practical, yet there are no exceptions in the code.  
OSHA does not require these extentions in there "fixed industrial stair spec".  
Since I am not a member of ICC I can not get a code interpratation, you got to pay for that.
Anybody out there run into this?

Also I'd like some clarification on the 7" riser and 11" tread requirement, again there is no exception for Industrial, yet OSHA has a range for riser and tread dimensions way outside this.

RE: Handrail extentions IBC 2003 for Industrial?

The provision for extensions in the section you reference is 12 inches beyond the edge of the top stair tread, and one tread depth at the bottom.  It is unclear where your designer is coming up with 2 feet.

As for alternative stairs, the exception for some spaces is the provision for alternating tread devices in Section 1009.10.

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