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Which governs...OSHA or SBC?

Which governs...OSHA or SBC?

Which governs...OSHA or SBC?

(OP)
In the design of stairs for industrial facilities, which one governs OSHA or SBC?  I'm specifically looking at the height of risers.  The SBC states that 7.75" is the max, whereas, OSHA allows 9.5" (angle of fixed stairs shall be between 30 and 50 degrees).  

RE: Which governs...OSHA or SBC?

Both criteria are "maximum" so the lower of the two maximums would apply and still comply with both.

You must comply with the building code, first.  OSHA is an occupational requirement and in this case does not conflict with the code, so you do not have to seek a variance from either.  It will obviously change your stair angle and could present a dimensional issue.

It is easier to justify a building code deviation than it is to justify an OSHA deviation, but I would go through a documentation process showing your decision and why, just for your protection, in the event you decide to deviate.  If your application is on a path of egress or concerns Life Safety issues, I would not deviate from the code requirements without significant justification.

RE: Which governs...OSHA or SBC?

(OP)
Thanks.  I guess it's like anything else in the world of structural engineering; document why you did something a certain way.

RE: Which governs...OSHA or SBC?

Remember that the most restrictive code usually take presidence...

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