The reason for that is that manufacturers have not tested or had tested their SW sprinklers in the myriad of extra hazard applications therefore they are not listed for EH occupancies.
As far as ductwork, why anyone would use a SW is questionable. Typically pendants are used as you don’t need the throw distance of a SW inside a piece of duct. I would really question the designer on the design and reject it if I was reviewing. Flexhead has a great system for ductwork, makes installation simple and is designed for this specific application. Craig L. Prahl Fire Protection Group Lead/SME CH2M 200 Verdae Blvd. Greenville, SC 29607 Direct - 864.920.7540 Fax - 864.920.7129 CH2MHILL Extension 77540 [email protected] From: Sprinklerforum [mailto:[email protected]] On Behalf Of Zachary Siegrist Sent: Monday, August 08, 2016 6:02 PM To: [email protected] Subject: Paint spray application [EXTERNAL] I was taught that sidewall sprinklers cannot be used in an extra hazard application. At least that is what I recall. Additionally, the protection areas and maximum spacing table for sidewall heads do not have any information for extra hazard occupancies. I am reviewing a set of plans for a paint spray booth and sprinklers must be spaced in ducts at 12 foot intervals. The designers called out sidewall sprinklers on plans. How is this best accomplished if you can't use sidewall sprinklers? Zach
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