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RE: stone floor deflection criteria

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I don't know if this is a current number, but try the Marble Institute of America at (810) 476-5558.  From what I recall, their recommended criteria is l/720.

Albert J. Meyer, Jr., P.E.
Martin-Espenlaub Engineering

-----Original Message-----
From: Ken Peoples [mailto:kspeoples(--nospam--at)]
Sent: Tuesday, January 30, 2001 11:39 AM
To: seaint(--nospam--at)
Subject: stone floor deflection criteria

I am doing a residential project that involves stone floors supported by wood joists.  The stone/setting bed thickness is about 3".  Can anyone direct me to a publication that would give a recommended deflection criteria for such a system.  I am leaning towards something like I would use for a masonry wall - say l/600 or l/700, but I would certainly like some back-up for my calculations.



Kenneth S. Peoples, P. E.
Lehigh Valley Technical Associates
1584 Weaversville Road
Northampton, PA 18067-9039
ph: 610-262-6345
fax: 610-262-8188
e-mail: kpeoples(--nospam--at)

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