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3.1.13.2.(5)
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Application
Application 1: 
Calculation of wall and ceiling areas described in Sentence 3.1.13.2.(4) with respect to combustible doors, skylights, glazing and light diffusers and lenses.
Exceptions: 
except in the case of Group A, Division 1 occupancies.
This applies to buildings described in Sentence 1.3.3.2.(1) of Division A.
Application 2: 
This also applies to the maximum flame-spread rating of interior wall, ceiling and floor finishes of buildings regulated by the provisions of Subsection 3.2.6., as stated in Sentence 3.1.13.7.(1).
Exceptions: 
except as provided in:
  • Sentence 3.1.13.7.(2), which applies to sprinklered buildings, other than buildings of Group B major occupancy and elevator cars,
  • Sentence 3.1.13.7.(3), which applies to trim and millwork in certain locations, and
  • Sentence 3.1.13.7.(4), which applies to doors in certain locations.
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Intent
Intent 1: 
To exempt combustible doors, skylights, glazing and light diffusers and lenses from the application of Sentence 3.1.13.2.(4), on the basis that these building elements will not significantly contribute to the spread of flame.
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