the use of underground steel pipe is restricted, see 10.1.2. One can
argue about whether it applies just to supply mains (since it came
out of NFPA 24) since 8.16.4.2.4 addresses it. Transitioning WITHIN
a sprinkler system (ie after the system riser), has never been well
defined. Skate on out there on that thin (unknown) ice.
Roland
On Apr 17, 2007, at 2:05 PM, Reed Roisum wrote:
I've got a outdoor amphitheatre that needs sprinkler protection. The
only option allowed to get from the controls (adjacent heated
building)
to the arch on the amphitheatre is to go underground. We will be
using
galvanized pipe for the dry system for the amphitheatre.
The question is what pipe should I spec for the dry underground? Can
(should) I use galvanized? Do you sleeve it? Any other suggestions?
Thanks,
Reed Roisum
Fire Protection Technician
Ulteig Engineers, Inc.
3350 38th Avenue South
Fargo, ND 58104-7079
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