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I am designing a warehouse slab supporting racks with a Defined Traffic
Floor and racks.

The lift truck requires isles without shrinkage joints.  There the slab
panels will be 15'x150' without any joints

i ran across a reference referring to designing the slab panel utilizing
shatter theory, which requires 1/2% steel 
ratio and will limit expected cracking to "micro-cracking" which is
acceptable for the lift-truck electronics.

I have designed rack slabs per PCI, WRI and slab drag theory but i haven't
previously heard of "shatter theory"

Does anyone no of a reference where I can find any information or other

thanks in advance