Todd, I would take the room height as a critical factor. The attic head requires a CEILING below the roof structure, so I think the height is important. The BB head is listed for a span of 60 feet, but the span for the Hip sprinkler is 28 feet. As the maximum listed roof slope for the BB sprinkler is 12:12, the maximum height is 30 feet. But the max roof slope for the Hip sprinkler is 7:12. So the max height is 16'-4". Where the room height was within these limits, I have used the attic heads (actually only the BB head so far), in non-attic situations, with the flow selected for the ROOM HEIGHT (not the span). Please note this interpretation is my own and what I think is reasonable. Tyco may contradict, I'm not sure.
In your situation, I wouldn't use it due to the room height. Also, your roof slope appears to be over 7:12. Tony -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Todd Williams - FPDC Sent: January 4, 2008 5:25 AM To: [email protected] Subject: another Attic Sprinkler question I am designing a system for the top level of a tower (the same one from a previous post). The space is roughly 25 x 25. The height at the hip is 22 feet and at the peak of the roof is about 30 ft. The peak is in the geometric center and there are 4 sloped surfaces, similar to the top of the Washington Monument. The space is almost completely filled by an empty, open-topped steel tank about 20 ft high. There are existing sprinklers at the roof, but the piping is in bad shape and needs to be replaced. I designed a system using 7 regular sprinklers. The contractor who has to do the job has asked if the Tyco Attic Hip sprinklers could be used in this situation. My immediate reaction was no because I don't think this qualifies under the definition of an attic. However, I thought I would put it out to see if anyone has used them in this type of situation. Todd G. Williams, PE Fire Protection Design/Consulting Stonington, Connecticut www.fpdc.com 860.535.2080 _______________________________________________ Sprinklerforum mailing list [email protected] http://lists.firesprinkler.org/mailman/listinfo/sprinklerforum To Unsubscribe, send an email to:[EMAIL PROTECTED] (Put the word unsubscribe in the subject field) _______________________________________________ Sprinklerforum mailing list [email protected] http://lists.firesprinkler.org/mailman/listinfo/sprinklerforum To Unsubscribe, send an email to:[EMAIL PROTECTED] (Put the word unsubscribe in the subject field)
