huangyhg

deflection criteria for slate tile wall
i am working on a building with a slate tile facade. does anyone know the appropriate deflection criteria to use for the design of curtainwalls and spandrel beams? any help would be much appreciated.
-zach lindauer

for brittle materials, i have seen deflection limits ranging from l/480 to l/640.
thank you for your reply sperlingpe.
perhaps some additional information would be useful. slate tiles are proposed to be attached to 3/4" plywood with hooks. no grout will be used in this application. this will allow the tiles to slip in relation to one another without causing stresses within the tiles.
i believe this is very similar to a slate shingle roof, which would be designed for l/360 total load deflection. does this seem reasonable?
zfl, that is an interesting application that i've not encountered before. slate isn't used much around here. just curious: are the tiles lapped similar to a roof? what is the plywood attached to: metal or wood studs; cmu? unless there is industry data to the contrary and no concern about too much deflection causing leaking problems between the tiles, l/360 would be reasonable in my opinion.
the tiles are arranged in a half-lap pattern. the plywood is attached to metal studs. i have not been able to find any industry data regarding this condition. all opinions on this are very much appreciated.
-zfl
i've looked for info on the 'net, also. nothing so far for slate used for siding.

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