Heads Under Obstructions

[MTXThunder9500]

We have an AHJ that is telling me need to include a head thats under a shelf but in the 2002 code book 14.4.4.4.3 says we can eliminate the heads from the calculations. They are still on the 1999 NFPA 13 book I can't seem to find it in that edition was it not included in that one?

 

[TravisMack]

I started in the late 80's and cant ever remember having to calculate heads under an obstruction. We have always calculated one level of sprinklers.

Travis Mack
MFP Design, LLC

http://www.mfpdesign.com

 

[MTXThunder9500]

Do you know here its located at in the 99 code book by chance?

 

[TravisMack]

I don't have a 99 edition any longer and can't read that edition online. Look in the calcs section.

Travis Mack
MFP Design, LLC

http://www.mfpdesign.com

 

[cdafd]

Look at 8-4.4.3.2 99 edition

 

[MTXThunder9500]

Found it!

8-4.4.4 99 Edition
Exception No. 2

 

[cdafd]

close!!!