I've had the request multiple times from architects to provide closely spaced sprinklers near interior windows to provide the equivalent of a 1-hour wall.
The only support I see for such an arrangement in the International Building Code or in NFPA 13 for glass is specific to the "Enclosure of Atriums," Section 404.5 (2003-2009 Editions) or 404.6 (2013-2015 Editions).
If someone is looking to provide the equivalent of a 1-hour wall, with glass, that is not a part of an atrium enclosure, then are the only options to provide rated glass or the Tyco WS Window Sprinkler?
I sense a lot of confusion on this topic from architects, whom I guess see other project arrangements and just assume they're standard closely-spaced sprinklers.
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