Conarb,
You are making my point, thanks,
Mark,
It's not about the cause, it's about the failures, and your smoke detector statement is just off base.
From they way I read the limited information I have, it points to the water being the cause of the collapse, which to me just seems odd.
And if it is true that the water caused the collapse, saying the dumb use of the fire places to me is an oversight because there are many items in a house that could produce that much heat and fire, one that comes to mind every day is personnel studios. Sewing studios and a few others.
And if the flew pipe was against the sprinkler pipe and melted the pipe to allow water to flow, would it not steam cool the pipe and flow down along the unit putting the water were it needs to be?
It just sounds hinki to me to introduce the water as the reason for the collapse. I not sticking up for the guy at all, I am just saying that from the information I've read so far, it does not look like the sprinklers helped, and that 1 pipe broken in a sprinkler system, in the ceiling seems way to minor to cause that much distruction without a lot of something else going on.
I had service tech about 6 years ago work in my attic installing a radiant heat ceiling unit in my bathroom, during the installation he uncovered the insulation over my shower and did not put it back, during a really bad cold snap a few years ago, my cold water line froze and cracked, when it thawed I had a mess in the laundry room below when I came home, it was on the riser pipe above the value.
Take it anyway you want, to me if the sprinkler pipe was metal, the statement about melting to me goes away, IMO thus my point