In regard to (1): I think the testing/listing of these sprinklers anticipate an obstructed environment. The Tyco's are limited to 10' and 12' max spacing, less than the 15' we're allowed for light and ordinary hazard SSU's and SSP's. I didn't take the time to look at Viking's, but I assume they have a similar max spacing.
Ed Kramer Lawrence, KS > I have a combustible concealed space above the main floor of a two > storey building that is required to be sprinklered. This space is 16" > deep and consists of open web trusses spaced 16" on-centre. The webs are > made of 2x4's, causing considerable obstructions. This space qualifies > for the use of heads listed for this use. > > My questions/dilemmas are as following: > > (1) There is no feasible possibility to avoid obstructions. Any > comments? > (2) As far as I know, the CC heads are only made by TYCO and they are > not ULC listed. I'm in a Canadian jurisdiction. So can I say there is no > listed head (as the building code validates only ULC listings) and use > standard heads? > (3) If I use CC heads, can I use exposed blazemaster piping (subject to > the restrictions of course)? The problem is exposed blazemaster piping > is allowed only in its UL listing and not in ULC. So just going around > in circles. > > Thanks for any comments. > > Tony _______________________________________________ Sprinklerforum mailing list [email protected] http://fireball.firesprinkler.org/mailman/listinfo/sprinklerforum
