Probably not, but I wonder about the hose losses. I know when doing standpipe tests without drain risers, the kinks and twists are significant and losses are great, not that we calc. hose. I actually have competitors around here running hose down stairways to playpipes and testing that way. I watched once from a distance, pretty funny to see. I would imagine hose packs using 1 1/2-2" hose wouldn't kink up as bad as 3" (what I use) even running up 2 floors and back down 1 to the fire floor. That's got to be 50' right there in addition to what's needed once you enter the floor.
10' of 4" or 6" standpipe, not real significant. If you're that close in your calc, it'd be scary. Tom, Typically that's how its taught, connect to the hose valve on the floor below the fire, stretch the line up the stairwell to the floor above the fire and back down to the fire floor with the nozzle ending up at the fire floor stairway door. The idea being to avoid clutter on the fire floor and let gravity do some of the work feeding the hose line from above rather than having to pull it up from below. That doesn't mean its done that way everywhere, but what I've described is the norm. So does stretching the line one flight above the fire floor and two floors above the connected hose valve effect anything ? Hmmm John Drucker _______________________________________________ Sprinklerforum mailing list [email protected] http://fireball.firesprinkler.org/mailman/listinfo/sprinklerforum For Technical Assistance, send an email to: [email protected] To Unsubscribe, send an email to:[email protected] (Put the word unsubscribe in the subject field)
