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3.2.3.19.(3)
OP3
ObjectiveOP3 Protection of Adjacent Buildings from Fire
Attribution
Application
Application 1: 
Construction of [aboveground] walkways connected to buildings required to be of noncombustible construction, where:
  • not less than 50% of the area of any enclosing perimeter walls [of the walkways] is open to the outdoors, and
  • the walkways are at ground level.
This applies to buildings described in Sentence 1.3.3.2.(1) of Division A.
Application 2: 
This also applies to bridges between buildings or balconies used as a horizontal exit, as stated in Sentence 3.4.6.9.(6).
Application 3: 
This also applies to buildings to which Part 9 applies, as stated in Sentence 9.10.1.2.(1).
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Intent
Intent 1: 
To supersede the requirements of Sentence 3.2.3.19.(2) and permit combustible heavy timber construction if certain conditions are met [not less than 50% of the area of any enclosing perimeter walls is open to the outdoors, and the walkways are at ground level]. These conditions are to limit the probability that:
  • fire will spread from one building to the adjacent building connected by means of the walkway, which could lead to damage to the connected building, and
  • emergency responders will be delayed or ineffective in carrying out fire suppression operations, which could lead to the spread of fire from one building to the adjacent building connected by means of the walkway, which could lead to damage to the connected building.
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