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Mezzanine Deflection Limits

Mezzanine Deflection Limits

Mezzanine Deflection Limits

(OP)
Just wanted to get an idea of what deflection limits others are using for storage mezzanines.  I typically use L/360 but sometimes allow up to an inch of deflection depending on the application.

RE: Mezzanine Deflection Limits

I recommend at least L/360 of live load.  You never know if the space below the mezzanine will get finished out with a gypboard ceiling in the future.  However, ACI 318, Table 9.5(b) also has a limit of L/480 for certain situations.  If there are walls framed underneath the mezzanine, then I would limit deflection to 3/4".

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