Joists under stairs

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Old 05-08-19, 08:26 PM
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Joists under stairs

I'm leveling the subfloor by sistering joists.
they are 27" OC and 3x11 joists.
Is there any need to put reinforcement or 16' OC joists in an area where stairs will be?
 
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Old 05-09-19, 05:08 AM
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Generally no additional reinforcement is needed under the floor where stairs will land. You do want to make sure that you have good, sound subflooring or some other structure to anchor the stair stringers but they can just be screwed into the subflooring.
 
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