Sprig ups and theTyco Model ESFR-17

[SprinklerDesigner2]

I think I know the answer but here goes anyway.

I have an ESFR job where I want to use the Tyco Model ESFR-17 upright sprinkler

http://www.tyco-fire.com/TD_TFP/TFP/TFP316_10_2009.pdf

having a k-factor of 16.8.

From NFPA #13 2002 Edition having to do with upright ESFR sprinklers

8.12.5.3.2 Upright Sprinklers.

8.12.5.3.2.1 Upright sprinklers shall be installed on sprigs arranged so that the deflector is a minimum of 7 in. (178 mm) above the top of the sprinkler pipe.

8.12.5.3.2.2 K-11.2 upright sprinklers shall be permitted to be installed on sprigs arranged so that the deflector is a minimum of 7 in. (178 mm) above the top of the sprinkler pipe.

But on the lower right corner of page 2 of the sprinkler data sheet:

Obstructions Below Upright ESFR Sprinklers, Including Branch Lines
Per the requirements of FM, obstructions below upright ESFR Sprinklers can be ignored as follows:
• Open-web bar joists or trusses having chords no more than 4 inches (102 mm) wide
• Bridging or wind bracing no more than 4 inches (102 mm) wide
• Individual pipes and conduit 4 inches (102 mm) diameter or less (i.e. 3 inch (DN80) pipe size or less will not require sprigs)
• Individual groups of smaller pipe or conduit having a total width of 4 inches or less

It's not an FM project but I think I would be good to go per NFPA #13 on a 3" branch line without sprig ups?

Thanks.

 

[TravisMack]

I have been told from trustworthy sales reps multiple times that you can use these directly on a line. I have not had a job where the uprights were used, so I have not had a need to check. But, based on the sources, I would trust them to be correct.

Travis Mack
MFP Design, LLC

http://www.mfpdesign.com

 

[stookeyfpe]

SD2:

It appears this section was deleted in the 2007 edition of NFPA 13.

 

[SprinklerDesigner2]

Stookey,

Sprig ups, right? Makes sense because I don't think the 16.8 uprights were available in 2002 but I could be wrong.

I need to break down and by a 2010 handbook. Everywhere I work is till on 2002 but knowing this I feel better. I get nervous on large typical jobs where missing one little thing means 2,000 errors on the job.

Thanks.

 

[TravisMack]

wow. Just noticed you were referring to the 16.8K sprinklers. Small things make a huge difference in this industry K14 uprights are the ones that may give you the exception you were considering. It has been a long week and it is only Tuesday.

Travis Mack
MFP Design, LLC

http://www.mfpdesign.com