QUESTION: Fire sprinkler area with respect to ceiling elevation

[AN1010]

Good day everyone, does the ceiling elevation affects the sprinkler area?

 

[TravisMack]

As with many things, the answer is "it depends!"

If you use QR sprinklers, have light or ordinary hazard and ceilings less than 20', you can reduce the design area per a formula in NFPA 13.

In storage situations, the ceiling height as well as storage height are variables that affect design density.

If you are under FM guidelines, they have criteria based on hazard classification and ceiling height.

Some jurisdictions (I believe Las Vegas, or maybe it is Clark County) require a design area of 10x the ceiling height once you exceed 20'. That is all going from memory so may not be fully accurate.



Travis Mack
MFP Design, LLC

http://www.mfpdesign.com

"Follow" us at

https://www.facebook.com/pages/MFP-Design-LLC/92218417692

 

[AN1010]

thank you very much TravisMack for the input. the building is an office type and it has a ceiling elevation of 2500mm.

 

[cdafd]

Engr

Are you designing to NFPA 13. If so which edition.

 

[TravisMack]

Look into NFPA 13 for your answer. I can give it to you direct, but then you don't learn anything.

If you are using the proper sprinklers, there is a modification that is permitted under NFPA 13 criteria.

Travis Mack
MFP Design, LLC

http://www.mfpdesign.com

"Follow" us at

https://www.facebook.com/pages/MFP-Design-LLC/92218417692

 

[AN1010]

Of course. I look for it in the NFPA 13. Thanks a lot TravisMack.