These deflection limits apply both to the framing supporting the substrate and to the substrate itself for example when a concentrated load is applied between joists.
Ceramic tile deflection limits.
So if you have a beam 20ft long the allowable deflection limit is 20ftx12in ft 240 1.
Please read everything on the attached photo below.
Mia suggest in their standards to use a stricter total load deflection limit of l 720 where stone tiles are used.
The subfloor areas over which stone tile is to be applied must be designed to have a deflection not exceeding l 720 of the span.
And since it is small i will leave the source for where it is found here 1.
Learn more about it here.
The l stands for length.
However the limit of span 360 was often misunderstood as the same limit for framing members specified by the building code.
Until recently the tile council had specified a standard for ceramic tile only based on using test equipment that was intended to limit deflection of floor sheathing.
Tile industry associations recommend special total load deflection limits the following tables list the components and weights of typical floor systems along with the deflection limits that apply.
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Whether you are installing stone or ceramic tile over floors and walls there s one thing to consider.
Ceramic tile live load deflection shall not exceed l 360 stone tile live load deflection shall not exceed l 720 the owner should communicate loading requirements to the designer designer and contractor must make allowances for all live and concentrated loads including during construction and maintenance such as heavy.