We are open to whatever will work

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On Jun 30, 2013, at 7:06 AM, Todd - Work <[email protected]> wrote:

> Are you using a specific manufacturer sprinkler?
> 
> Todd G Williams, PE
> Fire Protection Design/Consulting
> Stonington, CT
> www.fpdc.com
> 
> On Jun 29, 2013, at 11:16 PM, Greg McGahan <[email protected]> wrote:
> 
>> Hello,
>> 
>> We have an existing system installed 20 x 20 with 14.5K ECOH sprinklers. 
>> They have now installed  a new wall separating the space into 2 spaces and 
>> left the sprinklers overspaced off the wall. The Calc plate indicates that 
>> the design was originally .15 fpm over 2,000 soft  and when we re-calc the 
>> system we are nearly identical to the results recorded on the data plate. If 
>> we calculate it at .20/1,500 it does not work. 
>> 
>> Question is how to we even begin to sort this out in order to add a row of 
>> new heads to correct the overspacing? The new sprinklers all seem to be 
>> specifically listed for .20 (OH2) and i do not see a loophole to utilize a 
>> lower density and a larger Remote Area as in the original design. I also do 
>> not see an allowance in 13 for such a scenario (similar to the allowance for 
>> modifications to existing systems with residential heads that were 
>> originally designed for less than 7 psi end head pressure)
>> 
>> I do not think there will be any salvaging this system if we cannot reduce 
>> the density…
>> 
>> Thanks for any help,
>> Greg
>> 
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