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3.2.3.7.(3)
OP3
ObjectiveOP3 Protection of Adjacent Buildings from Fire
Attribution
Application
Application 1: 
Minimum fire-resistance rating of an exposing building face, where a limiting distance shown in Tables 3.2.3.1.A. or 3.2.3.1.C. for a Group A, B, C or D, or Group F, Division 3 occupancy classification permits an exposing building face to have unprotected openings consisting of more than 25% but less than 100% of the exposing building face.
Exceptions: 
except as exempted in:
This applies to buildings described in Sentence 1.3.3.2.(1) of Division A.
Application 2: 
This also applies to exterior walls enclosing an attic or roof space located above an exposing building face, as stated in Sentence 3.2.3.3.(1).
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Intent
Intent 1: 
To limit the probability that an exposing building face will have insufficient fire resistance, which could lead to the spread of fire from the building to an adjacent building during the time required for emergency responders to perform their duties, which could lead to damage to adjacent buildings.
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