Pagni, at Berkeley and a grad-student made a computer program to predict glass breakage from fire exposure. Think that was back in the 80s'.
It wasn't air bubbles or liquefaction that caused window breakage in their findings. It was heating differences between exposed glass and the glass shielded by the frame. The difference (radiative heating being a component) between exposed and shielded glass created enough strain to break the pane. so, Ron, I guess it is possible to have a fire burn far enough away from the window, to break that window while not activating the window sprinkler, particularly from expsosure fires. Tyco passed the test, but we can't dis them for this: regulatory capture. The WS has game in the overwhelming majority of applications. We were told in some threads to throw away logic and do what the Code prescribes. And that covers our ifs, ands or butts. But the truth is, there still is the remote (and assumable) chance that in an unsprinklered building where we use the window sprinkler to assist us in achieving a wall rating... e.g. in the case of a 2 story wall uninterrupted by a floor that has glass comprising only the bottom story... there is a real possibility that the window sprinkler system will not prevent window breakage from a fire. Then the next question is, for the engineer or architect at least, so what if the wall breaks? It is a big what if, if the fire exposes a nursery school, or retirement home, or similar life safety challenge, but in many occupancies, everyone of reasonable mobility abilities will still exit safely. Property protection is another mention. scot deal excelsior fire protection _______________________________________________ Sprinklerforum mailing list http://lists.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)
