According to my records, there has been a “3000 sq. ft. rule” as long as there
have been area / density curves.
In the 1973 and 1974 editions, there was a note below Table 2-2.1(B) that said:
For combustible construction with wet or dry system the minimum
area of application shall be 3,000 sq. ft.
Then for the 1975 edition the note was modified to say:
For construction having unsprinklered combustible concealed spaces, the
minimum area of sprinkler operation shall be 3,000 square feet.
Best regards,
Larry Keeping
From: Sprinklerforum <sprinklerforum-boun...@lists.firesprinkler.org> On Behalf
Of Ron Greenman via Sprinklerforum
Sent: March 4, 2020 3:30 PM
To: sprinklerforum@lists.firesprinkler.org
Cc: Ron Greenman <rongreen...@gmail.com>
Subject: 3000 sqft rule
Does anyone know what edition of 13 the 3000 sqft rule was introduced?
Ron Greenman
rongreen...@gmail.com<mailto:rongreen...@gmail.com>
253.576.9700
The Universe is monstrously indifferent to the presence of man. -Werner Herzog,
screenwriter, film director, author, actor and opera director (1942-)
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