sslfire

NFPA 13 8.12.5.2* Isolated Obstructions Below Elevation of Sprinklers.

Discussion created by sslfire on Feb 21, 2017

Hi, i would like to ask for these clauses:

 

(2) Additional sprinklers shall not be required where the obstruction is 2 ft (600 mm) or less
in width and the sprinkler is located horizontally 1 ft (300 mm) or greater from the nearest
edge of the obstruction.
(4) Additional sprinklers shall not be required where the obstruction is 2 in. (50 mm) or
less in width and is located a minimum of 2 ft (600 mm) below the elevation of the
sprinkler deflector or is positioned a minimum of 1 ft (300 mm) horizontally from the
sprinkler.

 

Both of these clauses mentioned only the width, but how about the length of the obstruction? Should i install a 600mm(width) x 1200mm(length) lighting with a minimum spacing of 300mm horizontally to the edge of the lighting from the sprinkler deflector, would it comply with NFPA standard?

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