What is the structure of the freezer? Are the racks integral to that structure, 
or free standing? Could you support system from racks? 

Best

Bruce Verhei

Go 'Hawks



Sent from my iPhone
> On Sep 18, 2016, at 10:13, rongreenman . <rongreen...@gmail.com> wrote:
> 
> For once we have s post where a double interlock pre action is actually the 
> proper system and our fellow forumite wants to use a single interlock. If you 
> use a SIPA you'll have ice in your pipes before a head fuses. A DIPA WONT 
> FLIW Wter into the piping until sprinklers are fused. 
> 
> On Sunday, September 18, 2016, 321 <tcf...@bellsouth.net> wrote:e 
>> I have a very large Freezer/Cooler project that I am managing. My initial 
>> idea on this job has been to use a Wet Pipe System above the Freezer with 
>> ESFR Dry Pendents (Class IV in rack to 20'). Due to the exorbitant cost of 
>> the ESFR Dry Pendents I'm letting my thinking expand to possibly running 
>> Single Interlock Pre Action inside the Freezer ...since the Freezers are 
>> already up (yeah...I know !!).
>> 
>> The ceiling panels are 6" thick and I was wondering if any of you guys in 
>> your history have ever hung Fire Sprinkler Pipe inside a Freezer attaching 
>> to/thru the panels and how?
>> 
>> Thanks in advance
>> 
>> Atlantic Realty and Building, LLC
>> Palm Beach Gardens, Fl
>> 561-707-5150
>>  
>> John W. Farabee
>> V.P. Fire Sprinkler Division
> 
> 
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