masonry veneer anchors

huangyhg

masonry veneer anchors
howdy,
aci does not provide much in the way of design for stone veneer anchorage requirements.  is there another standard that is useful in design for these?  i am trying to determine anchorage spacing for a 4" split-faced limestone veneer anchored to cmu block wall with one-inch cavity (10-15' tall) using typical steel tie anchors that are grouted into the joints of the block and then the veneer.
is there a rule of thumb for this?  i have seen 16" o.c vertical and 32" o.c. horizontal to help with coarsing of the 8" block, but what stresses are of the most concern?
thanks a lot.
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check aci 530-02 chapter 6.
i would design the ties for tension for negative wind pressure and compression for positive pressure.  
look at the ncma-tek manual.  tek no. 64 provides a rational design. (at least, it used to, my copy is dated 1975.)
the building code usually includes a required maximum area per tie for anchored veneer.  check the ibc.