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9.10.14.4.(4)
OP3
ObjectiveOP3 Protection of Adjacent Buildings from Fire
Attribution
Application
Application 1: 
Calculation of the maximum aggregate area of unprotected openings, where all rooms, including closets and bathrooms, that are adjacent to the exposing building face and that have unprotected openings are sprinklered, notwithstanding any exemptions in the sprinkler standards referenced in Article 3.2.5.13., in buildings to which Part 9 applies [see Sentence 1.3.3.3.(1) of Division A for application of Part 9] that are sprinklered.
Exceptions: 
except as stated in Sentence 9.10.15.1.(1), which applies to buildings that contain only dwelling units and have no dwelling unit above another dwelling unit.
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Intent
Intent 1: 
To supersede the requirements of Sentence 9.10.14.4.(1), which would otherwise require certain maximum areas of unprotected openings, and permit a doubling of unprotected openings if certain conditions are met [i.e. the building and certain rooms are sprinklered].
This is to limit the probability that a fire in the subject building will not be suppressed or controlled, which could lead to the spread of fire from the subject building to an adjacent building during the time required for emergency responders to perform their duties, which could lead to damage to the adjacent building.
Intent 2: 
To supersede the requirements of the standards referenced in Article 3.2.5.13. by requiring certain rooms to be sprinklered.
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