definately concurr with Travis-- it is the same sprinkler air space
above the same fire floor space, with no vertical seperation.
Quoting "Travis Mack, SET" <[email protected]>:
It is my understanding you have to flow them simultaneously, even if
the "balance" point is at the public main.
Travis Mack
On 5/21/2012 2:23 PM, George Medina Jr wrote:
Thanks,
Definitely going to have a separate riser, I do not see any need to
balance the two since they are both from different systems. what do
you think?
Thanks for the input
George Medina Jr.
-----Original Message-----
From: Todd Williams<[email protected]>
To: sprinklerforum<[email protected]>
Sent: Mon, May 21, 2012 1:57 pm
Subject: Re: In Rack Sprinkler Supply
There is nothing I have seen that says in-racks must have a dedicated riser,
nly that they must be separately controlled. I think that
arrangement would be
cceptable, but I would install a control valve on the feed to the in-racks.
ake a look at the diagrams in 8.16.1.6 in the Handbook.
t 04:34 PM 5/21/2012, you wrote:
I am designing an In-rack sprinkler system in an industrial
building that has 4
xisting Automatic Sprinkler Systems that are wet and configured as
a grid. They
re located directly under the collector grid main. Is there anything in
FPA-13 that will not allow me to connect the in-rack supply from an
adjoining
prinkler System. The in racks are double row racks and running parallel with
he grid lines, so when I calculate the ceiling sprinklers directly above the
acks and calculate the in racks sprinklers, I will be flowing from two
ifferent risers, if so would I still need to balance the two? It is
conomically advantageous not to connect at the base of the riser or to the
upply main of the directly overhead system.
Thank You,
George Medina Jr.
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Todd G. Williams, PE
ire Protection Design/Consulting
tonington, CT
60.535.2080
ww.fpdc.com
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