I believe I see the confusion here.
The figure in the annex illustrates that the sprinkler system is to extend into the open space 0.6 x sqrt of the remote area, and it also provides guidance that any fire in the high ceiling area is only "expected to open sprinklers 1.2...." which is the means to determine the remote area in §28.2.4.2.1
Actually, the title of the figure is sort of explanatory - "Extension of Sprinkler System Above Drop Ceiling." Emphasis on "extension."
at least that's my take on this matter,
Ken Wagoner, SET
Parsley Consulting
500 West Mechanic Street
Harrisonville, Missouri 64701-2235
Phone: (760) 745-6181
Visit the website
Parsley Consulting
500 West Mechanic Street
Harrisonville, Missouri 64701-2235
Phone: (760) 745-6181
Visit the website
On 4/5/2024 11:34 PM, George Medina Jr.
wrote:
Sprinklerforum,
Section 9.3.14.3 says extend system over ceiling .6 x sq. rt. of design area (adjacent to drop ceiling) Than Figure A.9.14.3 states to extend 1.2 x sq. rt. of design area. Which one is it? Section 9.3.14.3.1 states to extend at least 24 ft. over drop ceiling (I understand that as a minimum). I am confused. Am I missing something so obvious? Can anyone help with clarity? is it .6 or 1.2?
George Medina Jr.
Sr. Fire Sprinkler DesignerSINGLETON FIRE PROTECTION INC.Office: (818) 252-5744Cell: (323) 906-5701
Business Hours: 9:00am-5:00pm
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