Charlie,
Same problem I faced some time back.  If you have the two-tier shelving I don't
think you can avoid the in-rack sprinklers.  We decided to just go with higher
shelves and a man-aboard picker system.  The cost of the sprinkler system was
just too high.  Even with the in-rack sprinklers you should get an opinion on
the 6" nominal flue that may be needed.  This is the space between the end
boxes of adjacent shelving section.  I don't know if the decked system is
considered "high piled" storage or whatever the terminology is.  Good luck,
Dick King

"Killian, Charlie" wrote:

> Greetings,
>
> I work for the Clackamas County Records Management Department here in
> beautiful Oregon, and we are in the final stages of installing a two level
> mezzanine system in our new records center. During the final permit review,
> the city fire marshal made the determination that we will need an in-rack
> sprinkler system for our shelving areas.