Hello Craig,

I have an AHJ that suggested back to back sidewall heads under a low
walkway to get the throw out to each side over the open space between the
walkway and the front of the condo unit. The condos connect to the walkway
via a "bridge" to the front door. There is dirt below the open space and
could be 5 stories above to the roof/skylight. He also wants a sidewall
head in the unit over the window that looks out to this area.

Monday, January 5, 2009, 5:02:15 PM, you wrote:

> Hey just get an AHJ to sign off on the concept, then it's all good!   ;) 


> Craig L. Prahl, CET   
> Fire Protection Specialist
> Mechanical Department
> CH2MHILL
> Lockwood Greene
> 1500 International Drive
> PO Box 491, Spartanburg, SC  29304-0491
> Direct - 864.599.4102
> Fax - 864.599.8439
> [email protected]
> http://www.ch2m.com 


> -----Original Message-----
> From: [email protected]
> [mailto:[email protected]] On Behalf Of Thom McMahon
> Sent: Monday, January 05, 2009 4:45 PM
> To: [email protected]
> Subject: RE: Sidewall Sprinklers

> All Dandy idea's. Now all you need to do is show that there is enough
> need for this to have UL and FM develop a standard test for this
> installation, then convince the MFG's that the demand for this
> installation is great enough for them to spend 100's of thousands of $ to
> get the testing and listing done.(If each of them tried to list just 3
> HSW heads, that would be over a million $.

> Takes a lot of HSW in "Space" installations to recover that kind of
> investment. Also I heard something about an economic down turn in the
> economy, where money is hard to get. That could just slow things down for 
> several years.


> Thom McMahon, SET
> Firetech, Inc.
> 2560 Copper Ridge Dr
> P.O. Box 882136
> Steamboat Springs, CO 80488
> Tel:  970-879-7952
> Fax: 970-879-7926



> -----Original Message-----
> From: [email protected]
> [mailto:[email protected]] On Behalf Of Johnson, Duane 
> (NIH/OD/ORS) [C]
> Sent: Monday, January 05, 2009 2:05 PM
> To: [email protected]
> Subject: RE: Sidewall Sprinklers

> Looking at 155°F EC pendents and uprights, 20x20 are standard response and
> 18x18 (or less) are quick response.  In other words, the sprinkler is
> either 9' away or 10' away from the fire.

> This leads one to believe that it would be possible to have an exposed
> HSW listed for a 10' throw for at least standard response, maybe quick 
> response.
> Note, that if a 'recessed' or even 'concealed' pendent can get a listing
> at 9' or 10' away from the fire, you would think an exposed sidewall 4'-6"
> below the ceiling could receive a listing.  Especially since 4"-6" below
> the ceiling is more ideal for a quick activation time than a recessed pendent.

> Duane Johnson, PE
> Program Manager
> Division of the Fire Marshal (Support Contractor) Office of Research
> Services National Institutes of Health
> 301-496-0487


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-- 
Best regards,
 Charles Thurston                            mailto:[email protected]
  Coastal Fire Protection

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