IRAS = In rack auto sprkrs
Guess if you don't know the difference between obstruction rules iin ESFR
vrs SSU or CMSA's, you might not know what IRAS are either. 
Matt, good catch on the steel column protection too, although I believe IRAS
will negate the requirement for them.

If you've got a big box, cures switching to control mode might be an
expensive cure. 

What are the issues?

-----Original Message-----
From: [email protected]
[mailto:[email protected]] On Behalf Of George Church
Sent: Thursday, September 23, 2010 4:25 PM
To: [email protected]
Subject: RE: Control Mode vs. ESFR

What jeff said. And...
What exactly are u protecting, and what might be planned for storage?
In control mode, you'll need to know what is stored, how it is packaged,
storage array, height, etc.

You may be looking at a boatload of IRAS.

-----Original Message-----
From: [email protected]
[mailto:[email protected]] On Behalf Of Jeff Hewitt
Sent: Thursday, September 23, 2010 4:21 PM
To: [email protected]
Subject: RE: Control Mode vs. ESFR

With most control mode, you have Group A plastic and pallet storage
limitations that you would NOT have with ESFR K14 or K17.  If these are
areas of concern, then that would be an issue.

Jeff Hewitt, PE, SET, SFPE (Professional Member) Corporate Engineer Bi-State
Fire Protection Corporation

241 Hughes Lane
St. Charles, MO  63301
636-946-0011
636-946-5172 (fax)
314-574-6989 (cell)

Fire Sprinklers Save lives.
Can You Live Without Them?

-----Original Message-----
From: [email protected]
[mailto:[email protected]] On Behalf Of Brian Harris
Sent: Thursday, September 23, 2010 3:08 PM
To: [email protected]
Subject: Control Mode vs. ESFR

Having issues with an existing job that was laid out using ESFR K17's, it
was mentioned by a local PE that using a Control Mode sprinkler may be the
answer. What are the pro's and con's with using a Control Mode sprinkler in
a warehouse type setting? I've looked at some of the product data sheets and
right away you can see the end head pressure is quite a bit lower than the
ESFR. Are the obstruction rules the same? Etc...

 

Brian Harris

First Defense Fire Protection

11957 Ramah Church Road

Huntersville, NC 28078

Phone: 704.948.3506

Fax: 704.948.3507

Nicet # 128476

 





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