Kathryn, That head can be 7-6 off the wall. The limiting factor is the maximum allowable square footage per head. So if a head is 9-0 off one wall and 7-6 off the opposite wall the total allowable distance between heads in the perpendicular direction would be A=SxL or L=A/S or L=225/16-6 or L=13-6. Since the maximum that this head can be off a wall in this direction is 7-6 that limits the opposite direction to 6-0. Since these are maximums any configuration that doesn't exceed these limitations is acceptable.
On 3/13/07, Kathryn Tyler <[EMAIL PROTECTED]> wrote:
Although, speaking of the spacing within a small room... This has been as issue of debate between 'designers' or layout fire protection people for quite some time. To play the devil's advocate here; if you are allowed to move one head 1-1/2 ft to making it 9 foot off the wall and you are allowed to go 15 foot to the next head and that head is allowed to be a max. of 6 foot off the wall (because 15' - 9' = 6'), isn't the head that is 6' off the wall still covering 7'-6" in the opposite direction. 225 sq. ft. divided by 18' = 12'-6" not 12'-0", so why the 6'-0" ruling? -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Kathy Tyler Sent: Tuesday, March 13, 2007 2:38 PM To: [email protected] Subject: RE: Small Room Rule Sorry I was referencing the square footage figured when you perform hydraulic calculations and the demand for the square footage that is required. Kathryn A. Tyler NICET IV, ASCET Member fire protection designer Kelly-Wright & Associates PC Hvac, Plumbing & Fire Protection (520) 887-1919 ext. 302 fax: (520) 696-0280 [EMAIL PROTECTED] <blocked::mailto:[EMAIL PROTECTED]> www.kwmech.com <blocked::http://www.kwmech.com/> _______________________________________________ Sprinklerforum mailing list [email protected] http://lists.firesprinkler.org/mailman/listinfo/sprinklerforum _______________________________________________ Sprinklerforum mailing list [email protected] http://lists.firesprinkler.org/mailman/listinfo/sprinklerforum
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