sprinkler piping in attic
sprinkler piping in attic
(OP)
Hi,
I have a small commercial building (~4000 sf) with wood framed construction, a sloped roof, and attic insulation is at the ceiling. A wet pipe sprinkler system is being installed for the building with some upright sprinkler heads in the attic. Depending on the locations of these upright heads, it could be anywhere from a few inches above the top of the insulation to 4 or 5 feet above the insulation.
My question is during the winter months where temperature drops to about 30 degrees F, how can I protect these exposed piping from freezing? Most of the pipes can be installed below the attic insulation, but the upright piping and sprinkler heads are exposed. Does NFPA 13 allow tube insulation on these upright piping AND using dry type sprinkler heads?
If not tube insulation, can heating cables be used where needed?
Thanks.
I have a small commercial building (~4000 sf) with wood framed construction, a sloped roof, and attic insulation is at the ceiling. A wet pipe sprinkler system is being installed for the building with some upright sprinkler heads in the attic. Depending on the locations of these upright heads, it could be anywhere from a few inches above the top of the insulation to 4 or 5 feet above the insulation.
My question is during the winter months where temperature drops to about 30 degrees F, how can I protect these exposed piping from freezing? Most of the pipes can be installed below the attic insulation, but the upright piping and sprinkler heads are exposed. Does NFPA 13 allow tube insulation on these upright piping AND using dry type sprinkler heads?
If not tube insulation, can heating cables be used where needed?
Thanks.





RE: sprinkler piping in attic
RE: sprinkler piping in attic
Otherwise, if possible, you have the option of dry uprights. However, remember that they are only listed up to 48" in length. Also, the uprights have to be installed with the deflector parallel to the roof if the slope is >2:12. This can be challenging when supplying from below.
Travis Mack
MFP Design, LLC
www.mfpdesign.com
RE: sprinkler piping in attic
RE: sprinkler piping in attic
Travis Mack
MFP Design, LLC
www.mfpdesign.com
RE: sprinkler piping in attic
There may be other factors that cannot be known, that may affect the design
RE: sprinkler piping in attic